How to override hashcode() in String

Question

I need to override the hashcode() method in java.lang.String with a cyclic shift hash code. how do I do this? String is final so I cannot extend it. I've looked at all the postings regarding the logic of why hashcode() must be overwritten with equals() etc, but I need some thoughts on how to actually override the method.

Answer 1

public class MyString { // you are right, you can't extends java.lang.String
  private String str; // but you can wrap it
  public MyString(String s) {
    this.str = s;
  public String get() {
    return this.str;
  // ... implement all or most String methods again ...
  // ... then ...
  public int hashcode() {
    return whatEverYouWant; // but make sure it is consistent with equals
  public boolean equals(Object obj) {
    return (MyString)obj.get().equals(this.get());
}--lichu