Strange behavior with string interning in Java

Question

There is code as following:

String s = new String(\"1\");
s.intern();
String s2 = \"1\";
System.out.println(s == s2);

String s3 = new String(\"1\")+new          


        

Answer 1

s.intern() doesn't change the string s. You should have written:

    s = s.intern();