java - How to compare two StringBuffer Objects using .equals() method? -

this question has answer here:

• comparing stringbuffer content equals 8 answers

the following code did not work. can tell me what's wrong following code. logically should work...

package assignments;  import java.io.bufferedreader; import java.io.ioexception; import java.io.inputstreamreader;  public class ispalindrome { public static void main(string[] args) throws ioexception {     bufferedreader br = new bufferedreader(                                       new inputstreamreader(system.in));     system.out.println("enter word:");     stringbuffer sb1 = new stringbuffer(br.readline());     stringbuffer sb2 = new stringbuffer(sb1);     sb1.reverse();      if(sb2.equals(sb1))         system.out.println("palindrome");     else         system.out.println("not palindrome"); } } 

try

sb1.tostring().equals(sb2.tostring()); 

because stringbuffer#tostring method returns string value of data stored inside buffer:

returns string representing data in sequence. new string object allocated , initialized contain character sequence represented object. string returned. subsequent changes sequence not affect contents of string.