immutable « Wrapper Class « Java Class Q&A

1. Why does wrapper classes for primitive data types don't have a setter?    stackoverflow.com

What is the reason why Wrapper classes (like Integer, Double, etc.) don't have a setter for their inner primitive value ? I am asking this because that kind of functionality would have ...

2. Are Java wrapper classes really immutable?    stackoverflow.com

Java Wrapper classes are supposed to be immutable. This means that once an object is being created, i.e.,

Integer i = new Integer(5);

i = ...

3. Are all primitive wrapper classes immutable objects?    stackoverflow.com

Are all primitive wrapper classes in Java immutable objects? String is immutable. What are the other immutable objects?

4. Immutable Wrapper Class    coderanch.com

Two points: 1. (and I admit this is redundant but I want to add my spin): There's an important difference between an object and a reference to an object. When you say Integer myInteger; you are declaring a reference to an object, but the object doesn't exist. When you say Integer myInteger = new Integer(3); you are both creating an object ...

5. Why String and Wrapper Class( Integer, Float etc ) immutable in Java ?    forums.oracle.com

6. Java Wrapper Classes are immutable?    forums.oracle.com