equals() in StringBuffer

[sudha siva]

Hai Everyone,
Please have a look at the following code.

class Test{
public static void main(String args[]){
StringBuffer s=new StringBuffer("java");
StringBuffer s1=new StringBuffer("java");
System.out.println(s.equals(s1));
}
}

equals() of the above StringBuffers returns false.But both of them has the same value "java". So equals() should return true. Can anyone explaim me why the output is false.

Thanks
sudha

[Stefan Zoerner]

Hello!
Have a look to the APIs of String and StringBuffer.
The class StringBuffer does not override the equals method of Object, so instances of StringBuffer have the same behaviour of Object, when they are compared via equals (in Object, this method returns true if and only if the references refer to the same object).
String overrides the method equals, it compares the content of the Strings.
Greetings from Hamburg, Stefan

[Junilu Lacar]

In addition to Stephan's reply, you can use the following to get what you want:

  
s.toString().equals(s1.toString());