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What are immutables? An immutable is a type that can’t be modified after it has been created. The most common way to define an object in Java is by instantiating a class; Once the class is instantiated, we can modify its properties directly or by calling methods that modify them. Let’s look at an example of a mutable object: 1 2 3 public class MyClass { public int value; } This is a very simple type that we can instantiate and modify: 1 2 MyClass obj = new MyClass(); obj.value = 4; Immutable...