Invoking method thru reflection

Question

I have got a method which takes in a primitive datatype (eg. int) as its argument. One of the parameters of getMethod() in the class Class is Class[] representing the various args of the method to be invoked. How do I represent the primitive data type as part of this Class[]?
Your reply will be greatly appreciated.

Answer 1

import java.lang.reflect.*;
public class TT {
     public static void loadClass(String className,String methodName,String arg)
          Class          l_class;
          java.lang.Object          returnValue=new Object();
          try{
          Class[] parameterTypes = new Class[] { int.class };
               l_class=Class.forName(className);
               java.lang.Object o = l_class.newInstance();
               Method method =l_class.getMethod(methodName, parameterTypes);
               java.lang.Object arguments[] = new java.lang.Object[1];
               arguments[0] =new Integer(arg) ;
               returnValue=method.invoke(o, arguments);
               if( returnValue instanceof Integer ){
                    System.out.println("Int value = "+((Integer)returnValue).intValue() );
               else{
                    System.out.println("Int value false");
          catch(NoSuchMethodException nsme)          {          }
          catch(IllegalArgumentException iae){     }
          catch(InvocationTargetException ite)     {          }
          catch(Exception e){ }
          return ;
     public static void main(String[] args) throws Exception
          loadClass( args[0] , args[1], args[2] );
/// Example.java
public class Example
     public int get(int i){
          return i;
     public static void main(String[] args)
          System.out.println("Hello World!");
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