public class Test 
 {
   String a="aaa"; 
   String b="aaa"; 
   String c=new String("aaa"); 
   String d=new String("aaa"); 
  
   public void printResult() 
   { 
       System.out.println ("a:"+a); 
       System.out.println ("b:"+b); 
       System.out.println ("a==b: "+(a==b)); 
       System.out.println ("a==c: "+(a==c)); 
       System.out.println ("a==d: "+(a==d)); 
       System.out.println ("Equals: "+( 
               a.equals (b) & 
               b.equals (c) & 
               c.equals (d) 
                  )); 
   } 
  
   public static void main(String args[]) 
   { 
       Test temp=new Test(); 
       temp.printResult (); 
   } 
 }