Getting the Methods of a Class Object
There are three ways of obtaining a Method object from a Class object. 

 Class cls = java.lang.String.class;
     
 // By obtaining a list of all declared methods.
 Method[] methods = cls.getDeclaredMethods();
     
 // By obtaining a list of all public 
 // methods, both declared and inherited.
 methods = cls.getMethods();
 for (int i=0; i<methods.length; i++) {
   Class returnType = methods[i].getReturnType();
   Class[] paramTypes = 
     methods[i].getParameterTypes();
     process(methods[i]);
 }
     
 // By obtaining a particular Method 
 // object.
 // This example retrieves String.substring(int).
 try {
   Method method = cls.getMethod(
     "substring", new Class[] {int.class});
   process(method);
   } catch (NoSuchMethodException e) {
 }