String Pool Demo: == versus equals()

public class StringPoolDemo {
    public static void main(String[] args) {
        String literal1 = "java";
        String literal2 = "java";
        String created = new String("java");
        String built = "ja" + "va".toString();          // not a compile-time constant, so a new object

        System.out.println(literal1 == literal2);       // true   same pooled object
        System.out.println(literal1 == created);        // false  new String creates a separate object
        System.out.println(literal1.equals(created));   // true   same characters
        System.out.println(literal1 == built);          // false  built at run time
        System.out.println(literal1 == built.intern()); // true   intern() returns the pooled instance
    }
}