Answer Posted / rajan

equals() method compares the state of an object i.e. it
compares the contents of the two objects.
but == compares the instance of the object i.e. it comparing
the identifier(references).
Ex:
public class Test2
{
public static void main(String args[])
{
// Create two equal but distinct strings
String a = new String(new char[]
{'h', 'e', 'l', 'l', 'o'});
String b = new String(new char[]
{'h', 'e', 'l', 'l', 'o'});

System.out.println(a==b);
System.out.println(a.equals(b));

// Now let's see what happens with the same tests

// with variables of type object
Object c = a;
Object d = b;

System.out.println(c==d);
System.out.println(c.equals(d));
}
}
Output is:
false
true
false
true
From the above example the String object is creating new
instances, so == compares the instances are equal are not.
equal() method compares the contents of a two object .

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