Can I get all methods of a class?

by

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>javac DumpMethods.java

Run like this, and results follow
C:\Documents and Settings\glow\My Documents\j>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 < methods.length; i++) {
                System.out.println(methods[i].toString());
            }
        } catch (Throwable e) {
            System.err.println(e);
        }
    }
}

More Related Contents:

  1. Compare two objects with .equals() and == operator
  2. Java synchronized static methods: lock on object or class
  3. What does .class mean in Java?
  4. Advantage of set and get methods vs public variable [duplicate]
  5. Final arguments in interface methods – what’s the point?
  6. Creating new Android (Java ) file in Existing Android package [closed]
  7. How to fix “Method in class cannot be applied to given types” error?
  8. When is the finalize() method called in Java?
  9. What is this: [Ljava.lang.Object;?
  10. How to achieve method chaining in Java?
  11. Creating an array of objects in Java
  12. Why can’t we have static method in a (non-static) inner class (pre-Java 16)?
  13. How to use Class in Java?
  14. How to get names of classes inside a jar file?
  15. Method to dynamically load java class files
  16. What does the registerNatives() method do?
  17. Error inflating when extending a class
  18. java how expensive is a method call
  19. Android Unable to instantiate activity: Didn’t find class on path
  20. What does the return keyword do in a void method in Java?
  21. Optional Methods in Java Interface
  22. Inheritance in java and Superclasses(Object, Class)
  23. Can methods in java be nested and what is the effect? [closed]
  24. method in class cannot be applied to given types
  25. java.lang.NullPointerException with boolean
  26. Java Class.forName() from distant directory
  27. How do I pass a class as a parameter in Java?
  28. How to use String.format() in Java? [duplicate]
  29. Java: Use import or explicit package / class name?
  30. Static method in Java can be accessed using object instance [duplicate]

Leave a Comment