In Java, call-by-value is used with____ Group of answer choicesobjectsall of thesethisprimitive types

In Java, call-by-value is used with both primitive types and objects. So, the correct answer is "all of these".

Here's why:

1. Primitive types: When we pass a primitive type to a method, it is passed by value. That means the changes made to the variable in the method will not affect the original value.

2. Objects: When we pass an object to a method, the 'value' being passed is actually the reference to the object in the memory(heap), not the actual object itself. This might give an illusion of call-by-reference but in reality, it's still call-by-value because the method receives a copy of the reference, not the reference itself. Any changes made to the object via this reference will affect the original object but if we try to change the reference itself to point to another object or null, it won't affect the original reference.

3. 'this' keyword: 'this' is a reference variable that refers to the current object. The 'this' keyword can be used to refer to the members of the current class from within an instance method or a constructor. Since 'this' is also an object reference, it follows the same call-by-value rule as objects.

So, in Java, call-by-value is used with primitive types, objects, and 'this' keyword. Hence, the answer is "all of these".