String Equals

[Pinki Roy]

Hi All,

class StringEquals {

  public static void main(String[] args) {

    Boolean b = new Boolean(true);

    String str = new String(""+b);

    StringBuffer sb = new StringBuffer(str);
	  

    System.out.println(b.equals(str)+","

          +str.equals(sb)+","+sb.equals(b));

  }

}

In the above code I fail to understand why

str.equals(sb)

is displaying false.

[Joanne Neal]

Pinki Roy wrote:In the above code I fail to understand why

str.equals(sb)

is displaying false.

Because str refers to a String object and sb refers to a StringBuffer object and a String is never equal to a StringBuffer

[Zeeshan Sheikh]

It will only return true if the given object represents a String equivalent to this string otherwise its going to return false

So if you want the value to be true you need to override toString () method.

str.equals(sb.toString())

StringBuffer is like a String, but can be modified (mutable) while String object can not be modified (immutable).

Hope this helps.