Finding Out About Methods of a Class using reflection

One of the most valuable and basic uses of reflection is to find out what methods are defined within a class. To do this the following code can be used:

import java.lang.reflect.*;      public class method1 {       private int f1(        Object p, int x) throws NullPointerException       {          if (p == null)             throw new NullPointerException();          return x;       }               public static void main(String args[])       {          try {            Class cls = Class.forName("method1");                     Method methlist[]               = cls.getDeclaredMethods();             for (int i = 0; i < methlist.length;                i++) {                 Method m = methlist[i];                System.out.println("name                  = " + m.getName());                System.out.println("decl class = " +                               m.getDeclaringClass());                Class pvec[] = m.getParameterTypes();                for (int j = 0; j < pvec.length; j++)                   System.out.println("                    param #" + j + " " + pvec[j]);                Class evec[] = m.getExceptionTypes();                for (int j = 0; j < evec.length; j++)                   System.out.println("exc #" + j                     + " " + evec[j]);                System.out.println("return type = " +                                   m.getReturnType());                System.out.println("-----");             }          }          catch (Throwable e) {             System.err.println(e);          }       }    }