Can I get all methods of a class

Question

Suppose that I have a  class file  can I get all the methods included in that class

User · Accepted Answer

To know about all methods use this statement in console   javap -cp jar-file jar packagename classname  or  javap class-file class packagename classname  or for example   javap java lang StringBuffer

User · Answer

You can use the Reflection API

User · Answer

package tPoint   import java io File  import java lang reflect Method  import javax xml parsers DocumentBuilderFactory   import org w3c dom Document   public class ReadClasses    public static void main String   args         try           Class c   Class forName  tPoint      Sample            Object obj   c newInstance            Document doc            DocumentBuilderFactory newInstance   newDocumentBuilder                    parse new File  src datasource xml              Method   m   c getDeclaredMethods             for  Method e   m                String mName   e getName                if  mName startsWith  set                      System out println mName                   e invoke obj  new            String doc getElementsByTagName mName  item 0  getTextContent                                    catch  Exception e            e printStackTrace

User · Answer

public static Method   getAccessibleMethods Class clazz        List lt Method gt  result   new ArrayList lt Method gt         while  clazz    null            for  Method method   clazz getDeclaredMethods                  int modifiers   method getModifiers                if  Modifier isPublic modifiers     Modifier isProtected modifiers                     result add method                                   clazz   clazz getSuperclass              return result toArray new Method result size

User · Answer

Straight from the source  http   java sun com developer technicalArticles ALT Reflection  Then I modified it to be self contained  not requiring anything from the command line   -   import java lang reflect          Compile with this  C  Documents and Settings glow My Documents j gt javac DumpMethods java  Run like this  and results follow C  Documents and Settings glow My Documents j gt java DumpMethods public void DumpMethods foo   public int DumpMethods bar   public java lang String DumpMethods baz   public static void DumpMethods main java lang String        public class DumpMethods        public void foo            public int bar     return 12         public String baz     return            public static void main String args              try               Class thisClass   DumpMethods class              Method   methods   thisClass getDeclaredMethods                 for  int i   0  i  lt  methods length  i                      System out println methods i  toString                             catch  Throwable e                System err println e

[java] Can I get all methods of a class?

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