Why there is no way to pass by reference in java

Question

I guess java does not have the option \"pass by reference\" .But why ? Because sometimes it is very needed.

Answer 1

I guess the only place you really need pass by reference is to return multiple values from a function like the out keyword in C. To do this in Java, you can either create a class to hold the objects or use an existing Pair class offered by many libraries.

Similarly, you can pass a stub object that refers to something else and then you can change the reference in the object and see it reflected externally:

public static class Holder {
    public T value;

    public Holder(T value) {
        this.value = value;
    }
}

private Holder