package t001;

public class C01 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
         StringBuffer b1 = new StringBuffer("abc");
         StringBuffer b2 = new StringBuffer("abc");
         System.out.println(b1==b2);  //false
         System.out.println(b1.equals(b2)); //false
         
         StringBuilder b3 = new StringBuilder("def");
         StringBuilder b4  = new StringBuilder("def");
         System.out.println(b3==b4);  //false
         System.out.println(b3.equals(b4)); //false
    }

}