Java Program to prove that strings are immutable in java

by Online Tutorials Library July 22, 2022

Write a code to prove that strings are immutable in java?

Following program demonstrate it.

File: ProveStringImmutable .java

 public class ProveStringImmutable { public static void referenceCheck(Object x, Object y) { if (x == y) { System.out.println(“Both pointing to the same reference”);   } else { System.out.println(“Both are pointing to different reference”); } } public static void main(String[] args) { String st1 = “Java”; String st2 = “Java”; System.out.println(“Before Modification in st1”); referenceCheck(st1, st2); st1 += “ava”; System.out.println(“After Modification”); referenceCheck(st1, st2); } } 

Output:

Before Modification in st1 Both pointing to the same reference After Modification Both are pointing to different reference

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