Simple Object Immutability

While most objects are mutable, some are not. For example, any bean that provides a setXXX method is
mutable. Immutable objects can be used to define values or attributes that you don't want to be changed.


Example:

public class MyConstant {
private double value;
public MyConstant(double value) {
this.value = value;
}
public double getValue() {
return value;
}

}

This is not the only way to make object immutable, this is one of the ways available.