Getting the name of the currently executing method

Question

Is there a way to get the name of the currently executing method in Java

User · Answer

MethodHandles lookup   lookupClass   getEnclosingMethod   getName

User · Answer

public static String getCurrentMethodName             return Thread currentThread   getStackTrace   2  getClassName           Thread currentThread   getStackTrace   2  getMethodName

User · Answer

We used this code to mitigate potential variability in stack trace index - now just call methodName util   public class MethodNameTest       private static final int CLIENT CODE STACK INDEX       static              Finds out the index of  this code  in the returned stack trace - funny but it differs in JDK 1 5 and 1 6         int i   0          for  StackTraceElement ste   Thread currentThread   getStackTrace                  i                if  ste getClassName   equals MethodNameTest class getName                       break                                  CLIENT CODE STACK INDEX   i             public static void main String   args            System out println  methodName         methodName             System out println  CLIENT CODE STACK INDEX       CLIENT CODE STACK INDEX              public static String methodName             return Thread currentThread   getStackTrace   CLIENT CODE STACK INDEX  getMethodName              Seems overengineered  but we had some fixed number for JDK 1 5 and were a bit surprised it changed when we moved to JDK 1 6  Now it s the same in Java 6 7  but you just never know  It is not proof to changes in that index during runtime - but hopefully HotSpot doesn t do that bad   -

User · Answer

Technically this will work    String name   new Object     getClass   getEnclosingMethod   getName     However  a new anonymous inner class will be created during compile time  e g  YourClass 1 class   So this will create a  class file for each method that deploys this trick  Additionally  an otherwise unused object instance is created on each invocation during runtime  So this may be an acceptable debug trick  but it does come with significant overhead  An advantage of this trick is that getEnclosingMethod   returns java lang reflect Method which can be used to retrieve all other information of the method including annotations and parameter names  This makes it possible to distinguish between specific methods with the same name  method overload   Note that according to the JavaDoc of getEnclosingMethod   this trick should not throw a SecurityException as inner classes should be loaded using the same class loader  So there is no need to check the access conditions even if a security manager is present  Please be aware  It is required to use getEnclosingConstructor   for constructors  During blocks outside of  named  methods  getEnclosingMethod   returns null

User · Answer

To get the name of the method that called the current method you can use   new Exception  is not thrown   getStackTrace   1  getMethodName     This works on my MacBook as well as on my Android phone  I also tried   Thread currentThread   getStackTrace   1    but Android will return  getStackTrace  I could fix this for Android with  Thread currentThread   getStackTrace   2    but then I get the wrong answer on my MacBook

User · Answer

public static String getCurrentMethodName             return Thread currentThread   getStackTrace   2  getClassName           Thread currentThread   getStackTrace   2  getMethodName

User · Answer

Thread currentThread   getStackTrace   will usually contain the method you   re calling it from but there are pitfalls  see Javadoc       Some virtual machines may  under some circumstances  omit one or more stack frames from the stack trace  In the extreme case  a virtual machine that has no stack trace information concerning this thread is permitted to return a zero-length array from this method

User · Answer

January 2009  A full code would be  to use with  Bombe s caveat in mind           Get the method name for a depth in call stack   lt br   gt     Utility function     param depth depth in the call stack  0 means current method  1 means call method           return method name     public static String getMethodName final int depth      final StackTraceElement   ste   Thread currentThread   getStackTrace         System  out println ste ste length-depth  getClassName       ste ste length-depth  getMethodName          return ste ste length - depth  getMethodName       Wrong  fails for depth   0   return ste ste length - 1 - depth  getMethodName      Thank you Tom Tresansky     More in this question   Update December 2011     bluish comments      I use JRE 6 and gives me incorrect method name    It works if I write ste 2   depth  getMethodName             0 is getStackTrace        1 is getMethodName int depth  and    2 is invoking method         virgo47 s answer  upvoted  actually computes the right index to apply in order to get back the method name

User · Answer

What s wrong with this approach   class Example       FileOutputStream fileOutputStream       public Example               System out println  Example Example               debug  Example Example    false      toggle          try               fileOutputStream   new FileOutputStream  debug txt              catch  Exception exception                 debug exception   Calendar getInstance   getTime                          private boolean was911AnInsideJob             System out println  Example was911AnInsideJob              return true             public boolean shouldGWBushBeImpeached            System out println  Example shouldGWBushBeImpeached              return true             public void setPunishment int yearsInJail           debug  Server setPunishment int yearsInJail     yearsInJail       true             And before people go crazy about using System out println      you could always  and should  create some method so that output can be redirected  e g       private void debug  Object object            debug object true              private void dedub Object object  boolean debug            if  debug                System out println object                   you can also write to a file but make sure the output stream                ISN T opened every time debug Object object  is called              fileOutputStream write object toString   getBytes

User · Answer

This can be done using StackWalker since Java 9   public static String getCurrentMethodName         return StackWalker getInstance                          walk s - gt  s skip 1  findFirst                           get                          getMethodName       public static String getCallerMethodName         return StackWalker getInstance                          walk s - gt  s skip 2  findFirst                           get                          getMethodName        StackWalker is designed to be lazy  so it s likely to be more efficient than  say  Thread getStackTrace which eagerly creates an array for the entire callstack  Also see the JEP for more information

User · Answer

Util java   public static String getCurrentClassAndMethodNames         final StackTraceElement e   Thread currentThread   getStackTrace   2       final String s   e getClassName        return s substring s lastIndexOf        1  s length            e getMethodName        SomeClass java   public class SomeClass       public static void main String   args            System out println Util getCurrentClassAndMethodNames        output  SomeClass main

User · Answer

I ve got solution using this  In Android           param className       fully qualified className                            lt br  gt                             lt code gt YourClassName class getName    lt  code gt                             lt br  gt  lt br  gt      param classSimpleName simpleClassName                            lt br  gt                             lt code gt YourClassName class getSimpleName    lt  code gt                             lt br  gt  lt br  gt      public static void getStackTrace final String className  final String classSimpleName        final StackTraceElement   steArray   Thread currentThread   getStackTrace        int index   0      for  StackTraceElement ste   steArray            if  ste getClassName   equals className                 break                    index              if  index  gt   steArray length               Little Hacky         Log w classSimpleName  Arrays toString new String   steArray 3  getMethodName    String valueOf steArray 3  getLineNumber              else              Legitimate         Log w classSimpleName  Arrays toString new String   steArray index  getMethodName    String valueOf steArray index  getLineNumber

User · Answer

I ve got solution using this  In Android           param className       fully qualified className                            lt br  gt                             lt code gt YourClassName class getName    lt  code gt                             lt br  gt  lt br  gt      param classSimpleName simpleClassName                            lt br  gt                             lt code gt YourClassName class getSimpleName    lt  code gt                             lt br  gt  lt br  gt      public static void getStackTrace final String className  final String classSimpleName        final StackTraceElement   steArray   Thread currentThread   getStackTrace        int index   0      for  StackTraceElement ste   steArray            if  ste getClassName   equals className                 break                    index              if  index  gt   steArray length               Little Hacky         Log w classSimpleName  Arrays toString new String   steArray 3  getMethodName    String valueOf steArray 3  getLineNumber              else              Legitimate         Log w classSimpleName  Arrays toString new String   steArray index  getMethodName    String valueOf steArray index  getLineNumber

User · Answer

An alternative method is to create  but not throw  an Exception  and use that object from which to get the stack trace data  since the enclosing method will typically be at index 0 - as long as the JVM stores that information  as others have mentioned above   This not the cheapest method  however   From Throwable getStackTrace    this has been the same since Java 5 at least       The zeroth element of the array  assuming the array s length is non-zero  represents the top of the stack  which is the last method invocation in the sequence  Typically  this is the point at which this throwable was created and thrown     The snippet below assumes the class is non-static  because of getClass     but that s an aside   System out printf  Class  s  s n   getClass   getName    new Exception  is not thrown   getStackTrace   0  getMethodName

User · Answer

January 2009  A full code would be  to use with  Bombe s caveat in mind           Get the method name for a depth in call stack   lt br   gt     Utility function     param depth depth in the call stack  0 means current method  1 means call method           return method name     public static String getMethodName final int depth      final StackTraceElement   ste   Thread currentThread   getStackTrace         System  out println ste ste length-depth  getClassName       ste ste length-depth  getMethodName          return ste ste length - depth  getMethodName       Wrong  fails for depth   0   return ste ste length - 1 - depth  getMethodName      Thank you Tom Tresansky     More in this question   Update December 2011     bluish comments      I use JRE 6 and gives me incorrect method name    It works if I write ste 2   depth  getMethodName             0 is getStackTrace        1 is getMethodName int depth  and    2 is invoking method         virgo47 s answer  upvoted  actually computes the right index to apply in order to get back the method name

User · Answer

I don t know what is the intention behind getting the currently executed method s name  but if that s just for debugging purpose  then logging frameworks like  logback  can help here  For example  in logback  all you need to do is to use the pattern   M  in your logging configuration  However  this should be used with caution as this may degrade performance

User · Answer

I rewritten a little the maklemenz s answer   private static Method m   static       try           m   Throwable class getDeclaredMethod               getStackTraceElement               int class                      catch  final NoSuchMethodException e            throw new NoSuchMethodUncheckedException e             catch  final SecurityException e            throw new SecurityUncheckedException e             public static String getMethodName int depth        StackTraceElement element       final boolean accessible   m isAccessible        m setAccessible true        try           element    StackTraceElement  m invoke new Throwable    1   depth             catch  final IllegalAccessException e            throw new IllegalAccessUncheckedException e             catch  final InvocationTargetException e            throw new InvocationTargetUncheckedException e             finally           m setAccessible accessible              return element getMethodName       public static String getMethodName         return getMethodName 1

User · Answer

The fastest way I found is that   import java lang reflect Method   public class TraceHelper          save it static to have it available on every call     private static Method m       static           try               m   Throwable class getDeclaredMethod  getStackTraceElement                       int class               m setAccessible true             catch  Exception e                e printStackTrace                         public static String getMethodName final int depth            try               StackTraceElement element    StackTraceElement  m invoke                      new Throwable    depth   1               return element getMethodName              catch  Exception e                e printStackTrace                return null                      It accesses the native method getStackTraceElement int depth  directly  And stores the accessible Method in a static variable

User · Answer

Thread currentThread   getStackTrace   will usually contain the method you   re calling it from but there are pitfalls  see Javadoc       Some virtual machines may  under some circumstances  omit one or more stack frames from the stack trace  In the extreme case  a virtual machine that has no stack trace information concerning this thread is permitted to return a zero-length array from this method

User · Answer

To get the name of the method that called the current method you can use   new Exception  is not thrown   getStackTrace   1  getMethodName     This works on my MacBook as well as on my Android phone  I also tried   Thread currentThread   getStackTrace   1    but Android will return  getStackTrace  I could fix this for Android with  Thread currentThread   getStackTrace   2    but then I get the wrong answer on my MacBook

User · Answer

We used this code to mitigate potential variability in stack trace index - now just call methodName util   public class MethodNameTest       private static final int CLIENT CODE STACK INDEX       static              Finds out the index of  this code  in the returned stack trace - funny but it differs in JDK 1 5 and 1 6         int i   0          for  StackTraceElement ste   Thread currentThread   getStackTrace                  i                if  ste getClassName   equals MethodNameTest class getName                       break                                  CLIENT CODE STACK INDEX   i             public static void main String   args            System out println  methodName         methodName             System out println  CLIENT CODE STACK INDEX       CLIENT CODE STACK INDEX              public static String methodName             return Thread currentThread   getStackTrace   CLIENT CODE STACK INDEX  getMethodName              Seems overengineered  but we had some fixed number for JDK 1 5 and were a bit surprised it changed when we moved to JDK 1 6  Now it s the same in Java 6 7  but you just never know  It is not proof to changes in that index during runtime - but hopefully HotSpot doesn t do that bad   -

User · Answer

Most answers here seems wrong        public static String getCurrentMethod                 return getCurrentMethod 1             public static String getCurrentMethod int skip                return Thread currentThread   getStackTrace   1   1   skip  getMethodName            Example        public static void main String   args                aaa               public static void aaa                 System out println  aaa  - gt       getCurrentMethod                   System out println  aaa  - gt       getCurrentMethod 0                 System out println  main - gt       getCurrentMethod 1             Outputs    aaa  - gt  aaa aaa  - gt  aaa main - gt  main

User · Answer

An alternative method is to create  but not throw  an Exception  and use that object from which to get the stack trace data  since the enclosing method will typically be at index 0 - as long as the JVM stores that information  as others have mentioned above   This not the cheapest method  however   From Throwable getStackTrace    this has been the same since Java 5 at least       The zeroth element of the array  assuming the array s length is non-zero  represents the top of the stack  which is the last method invocation in the sequence  Typically  this is the point at which this throwable was created and thrown     The snippet below assumes the class is non-static  because of getClass     but that s an aside   System out printf  Class  s  s n   getClass   getName    new Exception  is not thrown   getStackTrace   0  getMethodName

User · Answer

public class SomeClass      public void foo          class Local           String name   Local class getEnclosingMethod   getName              name  will have value foo

User · Answer

String methodName  Thread currentThread   getStackTrace   1  getMethodName    System out println  methodName       methodName

User · Answer

I don t know what is the intention behind getting the currently executed method s name  but if that s just for debugging purpose  then logging frameworks like  logback  can help here  For example  in logback  all you need to do is to use the pattern   M  in your logging configuration  However  this should be used with caution as this may degrade performance

User · Answer

Thread currentThread   getStackTrace   will usually contain the method you   re calling it from but there are pitfalls  see Javadoc       Some virtual machines may  under some circumstances  omit one or more stack frames from the stack trace  In the extreme case  a virtual machine that has no stack trace information concerning this thread is permitted to return a zero-length array from this method

User · Answer

This can be done using StackWalker since Java 9   public static String getCurrentMethodName         return StackWalker getInstance                          walk s - gt  s skip 1  findFirst                           get                          getMethodName       public static String getCallerMethodName         return StackWalker getInstance                          walk s - gt  s skip 2  findFirst                           get                          getMethodName        StackWalker is designed to be lazy  so it s likely to be more efficient than  say  Thread getStackTrace which eagerly creates an array for the entire callstack  Also see the JEP for more information

User · Answer

What s wrong with this approach   class Example       FileOutputStream fileOutputStream       public Example               System out println  Example Example               debug  Example Example    false      toggle          try               fileOutputStream   new FileOutputStream  debug txt              catch  Exception exception                 debug exception   Calendar getInstance   getTime                          private boolean was911AnInsideJob             System out println  Example was911AnInsideJob              return true             public boolean shouldGWBushBeImpeached            System out println  Example shouldGWBushBeImpeached              return true             public void setPunishment int yearsInJail           debug  Server setPunishment int yearsInJail     yearsInJail       true             And before people go crazy about using System out println      you could always  and should  create some method so that output can be redirected  e g       private void debug  Object object            debug object true              private void dedub Object object  boolean debug            if  debug                System out println object                   you can also write to a file but make sure the output stream                ISN T opened every time debug Object object  is called              fileOutputStream write object toString   getBytes

User · Answer

Util java   public static String getCurrentClassAndMethodNames         final StackTraceElement e   Thread currentThread   getStackTrace   2       final String s   e getClassName        return s substring s lastIndexOf        1  s length            e getMethodName        SomeClass java   public class SomeClass       public static void main String   args            System out println Util getCurrentClassAndMethodNames        output  SomeClass main

User · Answer

Just in case the method which name you want to know is a junit test method  then you can use junit TestName rule  https   stackoverflow com a 1426730 3076107

User · Answer

Most answers here seems wrong        public static String getCurrentMethod                 return getCurrentMethod 1             public static String getCurrentMethod int skip                return Thread currentThread   getStackTrace   1   1   skip  getMethodName            Example        public static void main String   args                aaa               public static void aaa                 System out println  aaa  - gt       getCurrentMethod                   System out println  aaa  - gt       getCurrentMethod 0                 System out println  main - gt       getCurrentMethod 1             Outputs    aaa  - gt  aaa aaa  - gt  aaa main - gt  main

User · Answer

I rewritten a little the maklemenz s answer   private static Method m   static       try           m   Throwable class getDeclaredMethod               getStackTraceElement               int class                      catch  final NoSuchMethodException e            throw new NoSuchMethodUncheckedException e             catch  final SecurityException e            throw new SecurityUncheckedException e             public static String getMethodName int depth        StackTraceElement element       final boolean accessible   m isAccessible        m setAccessible true        try           element    StackTraceElement  m invoke new Throwable    1   depth             catch  final IllegalAccessException e            throw new IllegalAccessUncheckedException e             catch  final InvocationTargetException e            throw new InvocationTargetUncheckedException e             finally           m setAccessible accessible              return element getMethodName       public static String getMethodName         return getMethodName 1

User · Answer

This is an expansion on virgo47 s answer  above    It provides some static methods to get the current and invoking class   method names      Utility class  Getting the name of the current executing method     https   stackoverflow com questions 442747 getting-the-name-of-the-current-executing-method        Provides               getCurrentClassName           getCurrentMethodName           getCurrentFileName               getInvokingClassName           getInvokingMethodName           getInvokingFileName         Nb  Using StackTrace s to get this info is expensive  There are more optimised ways to obtain    method names  See other stackoverflow posts eg  https   stackoverflow com questions 421280 in-java-how-do-i-find-the-caller-of-a-method-using-stacktrace-or-reflection 2924426 2924426       29 09 2012  lem  - added methods to return  1  fully qualified names and  2  invoking class method names     package com stackoverflow util   public class StackTraceInfo           Lifted from virgo47 s stackoverflow answer         private static final int CLIENT CODE STACK INDEX       static              Finds out the index of  this code  in the returned stack trace - funny but it differs in JDK 1 5 and 1 6         int i   0          for  StackTraceElement ste  Thread currentThread   getStackTrace                          i                if  ste getClassName   equals StackTraceInfo class getName                                   break                                  CLIENT CODE STACK INDEX   i             public static String getCurrentMethodName                 return getCurrentMethodName 1          making additional overloaded method call requires  1 offset            private static String getCurrentMethodName int offset                return Thread currentThread   getStackTrace   CLIENT CODE STACK INDEX   offset  getMethodName               public static String getCurrentClassName                 return getCurrentClassName 1           making additional overloaded method call requires  1 offset            private static String getCurrentClassName int offset            return Thread currentThread   getStackTrace   CLIENT CODE STACK INDEX   offset  getClassName               public static String getCurrentFileName                 return getCurrentFileName 1          making additional overloaded method call requires  1 offset            private static String getCurrentFileName int offset                String filename   Thread currentThread   getStackTrace   CLIENT CODE STACK INDEX   offset  getFileName            int lineNumber   Thread currentThread   getStackTrace   CLIENT CODE STACK INDEX   offset  getLineNumber             return filename         lineNumber             public static String getInvokingMethodName                 return getInvokingMethodName 2               private static String getInvokingMethodName int offset                return getCurrentMethodName offset   1         re-uses getCurrentMethodName   with desired index            public static String getInvokingClassName                 return getInvokingClassName 2               private static String getInvokingClassName int offset                return getCurrentClassName offset   1          re-uses getCurrentClassName   with desired index            public static String getInvokingFileName                 return getInvokingFileName 2               private static String getInvokingFileName int offset                return getCurrentFileName offset   1          re-uses getCurrentFileName   with desired index            public static String getCurrentMethodNameFqn                 return getCurrentMethodNameFqn 1              private static String getCurrentMethodNameFqn int offset                String currentClassName   getCurrentClassName offset   1           String currentMethodName   getCurrentMethodName offset   1            return currentClassName         currentMethodName              public static String getCurrentFileNameFqn                 String CurrentMethodNameFqn   getCurrentMethodNameFqn 1           String currentFileName   getCurrentFileName 1            return CurrentMethodNameFqn         currentFileName                   public static String getInvokingMethodNameFqn                 return getInvokingMethodNameFqn 2              private static String getInvokingMethodNameFqn int offset                String invokingClassName   getInvokingClassName offset   1           String invokingMethodName   getInvokingMethodName offset   1            return invokingClassName         invokingMethodName             public static String getInvokingFileNameFqn                 String invokingMethodNameFqn   getInvokingMethodNameFqn 2           String invokingFileName   getInvokingFileName 2            return invokingMethodNameFqn         invokingFileName

User · Answer

MethodHandles lookup   lookupClass   getEnclosingMethod   getName

User · Answer

Both of these options work for me with Java   new Object     getClass   getEnclosingMethod   getName     Or   Thread currentThread   getStackTrace   1  getMethodName

User · Answer

Just in case the method which name you want to know is a junit test method  then you can use junit TestName rule  https   stackoverflow com a 1426730 3076107

User · Answer

This is an expansion on virgo47 s answer  above    It provides some static methods to get the current and invoking class   method names      Utility class  Getting the name of the current executing method     https   stackoverflow com questions 442747 getting-the-name-of-the-current-executing-method        Provides               getCurrentClassName           getCurrentMethodName           getCurrentFileName               getInvokingClassName           getInvokingMethodName           getInvokingFileName         Nb  Using StackTrace s to get this info is expensive  There are more optimised ways to obtain    method names  See other stackoverflow posts eg  https   stackoverflow com questions 421280 in-java-how-do-i-find-the-caller-of-a-method-using-stacktrace-or-reflection 2924426 2924426       29 09 2012  lem  - added methods to return  1  fully qualified names and  2  invoking class method names     package com stackoverflow util   public class StackTraceInfo           Lifted from virgo47 s stackoverflow answer         private static final int CLIENT CODE STACK INDEX       static              Finds out the index of  this code  in the returned stack trace - funny but it differs in JDK 1 5 and 1 6         int i   0          for  StackTraceElement ste  Thread currentThread   getStackTrace                          i                if  ste getClassName   equals StackTraceInfo class getName                                   break                                  CLIENT CODE STACK INDEX   i             public static String getCurrentMethodName                 return getCurrentMethodName 1          making additional overloaded method call requires  1 offset            private static String getCurrentMethodName int offset                return Thread currentThread   getStackTrace   CLIENT CODE STACK INDEX   offset  getMethodName               public static String getCurrentClassName                 return getCurrentClassName 1           making additional overloaded method call requires  1 offset            private static String getCurrentClassName int offset            return Thread currentThread   getStackTrace   CLIENT CODE STACK INDEX   offset  getClassName               public static String getCurrentFileName                 return getCurrentFileName 1          making additional overloaded method call requires  1 offset            private static String getCurrentFileName int offset                String filename   Thread currentThread   getStackTrace   CLIENT CODE STACK INDEX   offset  getFileName            int lineNumber   Thread currentThread   getStackTrace   CLIENT CODE STACK INDEX   offset  getLineNumber             return filename         lineNumber             public static String getInvokingMethodName                 return getInvokingMethodName 2               private static String getInvokingMethodName int offset                return getCurrentMethodName offset   1         re-uses getCurrentMethodName   with desired index            public static String getInvokingClassName                 return getInvokingClassName 2               private static String getInvokingClassName int offset                return getCurrentClassName offset   1          re-uses getCurrentClassName   with desired index            public static String getInvokingFileName                 return getInvokingFileName 2               private static String getInvokingFileName int offset                return getCurrentFileName offset   1          re-uses getCurrentFileName   with desired index            public static String getCurrentMethodNameFqn                 return getCurrentMethodNameFqn 1              private static String getCurrentMethodNameFqn int offset                String currentClassName   getCurrentClassName offset   1           String currentMethodName   getCurrentMethodName offset   1            return currentClassName         currentMethodName              public static String getCurrentFileNameFqn                 String CurrentMethodNameFqn   getCurrentMethodNameFqn 1           String currentFileName   getCurrentFileName 1            return CurrentMethodNameFqn         currentFileName                   public static String getInvokingMethodNameFqn                 return getInvokingMethodNameFqn 2              private static String getInvokingMethodNameFqn int offset                String invokingClassName   getInvokingClassName offset   1           String invokingMethodName   getInvokingMethodName offset   1            return invokingClassName         invokingMethodName             public static String getInvokingFileNameFqn                 String invokingMethodNameFqn   getInvokingMethodNameFqn 2           String invokingFileName   getInvokingFileName 2            return invokingMethodNameFqn         invokingFileName

User · Answer

String methodName  Thread currentThread   getStackTrace   1  getMethodName    System out println  methodName       methodName

User · Answer

Thread currentThread   getStackTrace   will usually contain the method you   re calling it from but there are pitfalls  see Javadoc       Some virtual machines may  under some circumstances  omit one or more stack frames from the stack trace  In the extreme case  a virtual machine that has no stack trace information concerning this thread is permitted to return a zero-length array from this method

User · Answer

January 2009  A full code would be  to use with  Bombe s caveat in mind           Get the method name for a depth in call stack   lt br   gt     Utility function     param depth depth in the call stack  0 means current method  1 means call method           return method name     public static String getMethodName final int depth      final StackTraceElement   ste   Thread currentThread   getStackTrace         System  out println ste ste length-depth  getClassName       ste ste length-depth  getMethodName          return ste ste length - depth  getMethodName       Wrong  fails for depth   0   return ste ste length - 1 - depth  getMethodName      Thank you Tom Tresansky     More in this question   Update December 2011     bluish comments      I use JRE 6 and gives me incorrect method name    It works if I write ste 2   depth  getMethodName             0 is getStackTrace        1 is getMethodName int depth  and    2 is invoking method         virgo47 s answer  upvoted  actually computes the right index to apply in order to get back the method name

User · Answer

Both of these options work for me with Java   new Object     getClass   getEnclosingMethod   getName     Or   Thread currentThread   getStackTrace   1  getMethodName

User · Answer

Technically this will work    String name   new Object     getClass   getEnclosingMethod   getName     However  a new anonymous inner class will be created during compile time  e g  YourClass 1 class   So this will create a  class file for each method that deploys this trick  Additionally  an otherwise unused object instance is created on each invocation during runtime  So this may be an acceptable debug trick  but it does come with significant overhead  An advantage of this trick is that getEnclosingMethod   returns java lang reflect Method which can be used to retrieve all other information of the method including annotations and parameter names  This makes it possible to distinguish between specific methods with the same name  method overload   Note that according to the JavaDoc of getEnclosingMethod   this trick should not throw a SecurityException as inner classes should be loaded using the same class loader  So there is no need to check the access conditions even if a security manager is present  Please be aware  It is required to use getEnclosingConstructor   for constructors  During blocks outside of  named  methods  getEnclosingMethod   returns null

User · Answer

January 2009  A full code would be  to use with  Bombe s caveat in mind           Get the method name for a depth in call stack   lt br   gt     Utility function     param depth depth in the call stack  0 means current method  1 means call method           return method name     public static String getMethodName final int depth      final StackTraceElement   ste   Thread currentThread   getStackTrace         System  out println ste ste length-depth  getClassName       ste ste length-depth  getMethodName          return ste ste length - depth  getMethodName       Wrong  fails for depth   0   return ste ste length - 1 - depth  getMethodName      Thank you Tom Tresansky     More in this question   Update December 2011     bluish comments      I use JRE 6 and gives me incorrect method name    It works if I write ste 2   depth  getMethodName             0 is getStackTrace        1 is getMethodName int depth  and    2 is invoking method         virgo47 s answer  upvoted  actually computes the right index to apply in order to get back the method name

User · Answer

The fastest way I found is that   import java lang reflect Method   public class TraceHelper          save it static to have it available on every call     private static Method m       static           try               m   Throwable class getDeclaredMethod  getStackTraceElement                       int class               m setAccessible true             catch  Exception e                e printStackTrace                         public static String getMethodName final int depth            try               StackTraceElement element    StackTraceElement  m invoke                      new Throwable    depth   1               return element getMethodName              catch  Exception e                e printStackTrace                return null                      It accesses the native method getStackTraceElement int depth  directly  And stores the accessible Method in a static variable

User · Answer

Use the following Code         StackTraceElement   stacktrace   Thread currentThread   getStackTrace        StackTraceElement e   stacktrace 1    coz 0th will be getStackTrace so 1st     String methodName   e getMethodName        System out println methodName

User · Answer

Use the following Code         StackTraceElement   stacktrace   Thread currentThread   getStackTrace        StackTraceElement e   stacktrace 1    coz 0th will be getStackTrace so 1st     String methodName   e getMethodName        System out println methodName

User · Answer

public class SomeClass      public void foo          class Local           String name   Local class getEnclosingMethod   getName              name  will have value foo

[java] Getting the name of the currently executing method

Examples related to java

Examples related to reflection

Examples related to methods