In this case, a regular object will be created by new keyword on heap area and it will NOT be placed in the String constant pool. Finally it will be assigned to the reference variable, var3.

???

That comment is output. that means all hashcode are same .that mean entire content with respect heap and string constant pool are maintain single hashcode. If similar content is available w.r.t to heap as well as string constant pool it is pointed to single hashcode.

ok

observe this program

class Test{
public static void main(String args[])
{
String s1=”hello”;
String s2=”hello”;
String s3=new String(“hello”);
String s4=new String(“hello”);
System.out.println(“w.r.t to heap & string constant pool”);
if(s1==s3)
System.out.println(“String s1 is equal to s”);
else
System.out.println(“String s1 is not equals to s”); // this line executes
System.out.println(“w.r.t string constant pool”);
if(s2==s1)
System.out.println(“String s1 is equal to s”); // this line executes
else
System.out.println(“String s1 is not equals to s”);
System.out.println(“w.r.t to heap “);
if(s3==s4)
System.out.println(“String s1 is equal to s”);
else
System.out.println(“String s1 is not equals to s”); // this line executes
}
}

Observing this two program i got confused . plz clarify this doubt

look at this code some body asked abt it

String s1 = “abc”;
String s2 = “ab”;
s2 = s2 + “c”;
if (s1 == s2)
System.out.println(”Equal”);
else
System.out.println(”false”);

ok this will show false
because when u are trying to add to string a new object will be created so the principle given on the top will work now, as it will create a object in the heap and the heap object refrence will be given back so the s1 and s2 will not at the same address,so it will show u false but if u want to refer to the “abc” in the string constant pool then you can use the “intern()” method as follows so both will refer to same address
String s1=”abc”;
String s2=”ab”;
s2=s2+”c”;
s2=s2.intern();
if(s1==s2)
{
System.out.println(“true”);
}
else
{
System.out.println(“false”);

}

regards
vawani S pati