String object declaration problem

[MohamedSalim malik]

class test3{
	public static void main(String args[]){
                String s1="ABC";
		       String s2="ABC";
		
		System.out.println(s1==s2);
		
	}		
}

In my SCJP class they taught us like Strings are considered as Objects in java.. If so the above s1,s2 should be two references which points to TWO OBJECTS . Am i correct.?
But when i compile and run this i got a result showing true. I am confused


then i made another program..

class test4{
	public static void main(String args[]){
		String s3=new String("XYZ");
		String s4=new String("XYZ");
		
		System.out.println(s3==s4);
	}		
}

When i run this, it showed the boolean value as 'false'. It indicates that this is two different objects.(is that correct?) My question is that, which is considered as
a OBJECT in java From above two declarations.?? can someone explain me?

[Christophe Verré]

We have a Journal article about Strings and the String pool. Check it here.

[MohamedSalim malik]

Awesome artical.. now i got it.. thanks for your help.. :