immutable-queue

Immutable object

• An immutable object is an object whose internal state remains constant after it has been entirely created.
• Need to use final when declaring its attributes. This guarantees that once the field is created, no one can change it.
• Create a defensive copy and return the copy instead the original one.

What we need to do

• Create the immutable stack
• Use the two immutable stack to implement immutable queue

How to execute

• mvn install

How to test

• mvn test