In Java, why does String == String evaluate to true inside a method (as opposed to using .equals())?

Question

If I have:

Boolean isEqual = compare("Hello World");

Boolean compare(String c) {
    String s = "Hello World";
    return s == c;
}

In my experience, this returns true. Why?

String literals are "intern"ed which means there is actually only one String. — Peter Lawrey, Dec 14 '14 at 20:09

score 0 · Answer 1 · answered Dec 14 '14 at 20:05

0

because its a string literal that has been interned, the same instance is used.

Use new String("Hello World") to make it false.

Also asked many many many times before on here

answered Dec 14 '14 at 20:05

NimChimpsky

3

so why do you answer this and not reffering to the original answer? – aviad Dec 14 '14 at 20:07
Cool, thanks! Sorry for the duplicate, I'll delete this one. I'm on mobile so I was having a hard time finding someone else who asked this question. – solarbabies Dec 14 '14 at 20:10

1 Answers1