How to create Immutable class?
There are many immutable classes like String, Boolean, Byte, Short, Integer, Long, Float, Double etc. In short, all the wrapper classes and String class is immutable. We can also create immutable class by creating final class that have final data members as the example given below:
Example to create Immutable class
In this example, we have created a final class named Employee. It have one final datamember, a parameterized constructor and getter method.
Pancard Number: ABC123
The above class is immutable because:
These points makes this class as immutable.