Java Concatenation , Concat - String

String + String;
strObj.concat(String)

package com.java.myapp;

public class MyClass {

    public static void main(String[] args) {
          
    	String a = new String("ThaiCreate.Com ");
    	String b = "2013 ";

        System.out.println(a + b); 
        System.out.println(a.concat(b)); 
        
    }
	
}