Java - get the current class name

Question

All I am trying to do is to get the current class name  and java appends a useless non-sense  1 to the end of my class name  How can I get rid of it and only return the actual class name   String className   this getClass   getName

User · Answer

Here is a Android variant  but same principle can be used in plain Java too   private static final String TAG   YourClass class getSimpleName    private static final String TAG   YourClass class getName

User · Answer

Try using this this getClass   getCanonicalName   or this getClass   getSimpleName     If it s an anonymous class  use this getClass   getSuperclass   getName

User · Answer

I m assuming this is happening for an anonymous class  When you create an anonymous class you actually create a class that extends the class whose name you got   The  cleaner  way to get the name you want is   If your class is an anonymous inner class  getSuperClass   should give you the class that it was created from  If you created it from an interface than you re sort of SOL because the best you can do is getInterfaces   which might give you more than one interface   The  hacky  way is to just get the name with getClassName   and use a regex to drop the  1

User · Answer

Reflection APIs     There are several Reflection APIs which return classes but these may   only be accessed if a Class has already been obtained either directly   or indirectly   Class getSuperclass        Returns the super class for the given class           Class c   javax swing JButton class getSuperclass            The super class of javax swing JButton is javax swing AbstractButton           Class getClasses         Returns all the public classes  interfaces  and enums that are members   of     the class including inherited members           Class lt   gt    c   Character class getClasses          Character contains two member classes Character Subset and   Character UnicodeBlock           Class getDeclaredClasses            Returns all of the classes interfaces  and enums that are explicitly declared in this class           Class lt   gt    c   Character class getDeclaredClasses         Character contains two public member classes Character Subset and Character UnicodeBlock and one private class       Character CharacterCache           Class getDeclaringClass           java lang reflect Field getDeclaringClass           java lang reflect Method getDeclaringClass           java lang reflect Constructor getDeclaringClass        Returns the Class in which these members were declared  Anonymous Class Declarations will not have a declaring class but will       have an enclosing class           import java lang reflect Field               Field f   System class getField  out                Class c   f getDeclaringClass                The field out is declared in System              public class MyClass                   static Object o   new Object                         public void m                                          static Class lt c gt    o getClass   getEnclosingClass                        The declaring class of the anonymous class defined by o is null       Class getEnclosingClass        Returns the immediately enclosing class of the class       Class c   Thread State class   getEnclosingClass         The enclosing class of the enum Thread State is Thread       public class MyClass           static Object o   new Object                  public void m                          static Class lt c gt    o getClass   getEnclosingClass               The anonymous class defined by o is enclosed by MyClass

User · Answer

In my case  I use this Java class  private String getCurrentProcessName         String processName    quot  quot       int pid   android os Process myPid             ActivityManager manager    ActivityManager  getSystemService Context ACTIVITY SERVICE       for  ActivityManager RunningAppProcessInfo processInfo   manager getRunningAppProcesses              if  processInfo pid    pid                processName   processInfo processName              break                           return processName

User · Answer

The   1  is not  useless non-sense   If your class is anonymous  a number is appended   If you don t want the class itself  but its declaring class  then you can use getEnclosingClass    For example   Class lt   gt  enclosingClass   getClass   getEnclosingClass    if  enclosingClass    null      System out println enclosingClass getName       else     System out println getClass   getName         You can move that in some static utility method   But note that this is not the current class name  The anonymous class is different class than its enclosing class  The case is similar for inner classes

User · Answer

You can use this getClass   getSimpleName    like so   import java lang reflect Field   public class Test        int x      int y         public void getClassName             String className   this getClass   getSimpleName             System out println  Name     className              public void getAttributes             Field   attributes   this getClass   getDeclaredFields               for int i   0  i  lt  attributes length  i                  System out println  Declared Fields    attributes i                             public static void main String args               Test t   new Test            t getClassName            t getAttributes

User · Answer

Try   String className   this getClass   getSimpleName      This will work as long as you don t use it in a static method

User · Answer

The combination of both answers  Also prints a method name   Class thisClass   new Object     getClass    String className   thisClass getEnclosingClass   getSimpleName    String methodName   thisClass getEnclosingMethod   getName    Log d  app   className         methodName

User · Answer

I ve found this to work for my code   however my code is getting the class out of an array within a for loop   String className      className   list i  getClass   getCanonicalName     System out print className     Use this to test it works

User · Answer

this answer is late  but i think there is another way to do this in the context of anonymous handler class   let s say   class A       void foo             obj addHandler new Handler                 void bar                     String className A this getClass   getName                                                               it will achieve the same result  additionally  it s actually quite convenience since every class is defined at compile time  so no dynamicity is damaged   above that  if the class is really nested  i e  A actually is enclosed by B  the class of B can be easily known as   B this getClass   getName

User · Answer

In your example  this probably refers to an anonymous class instance  Java gives a name to those classes by appending a  number to the name of the enclosing class

[java] Java - get the current class name?

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