Thread: pointers

Not in the same sense as C/C++. All object variables are pointer-like, but when you pass an object variable to a method, the reference is passed by value.

public class Test
{
    int val;
    public static void doIt1(Test t)
    {
        t.val = 5;
        System.out.println("doIt1 t.val: " + t.val); // will print out 5
    }
 
    public static void doIt2(Test t)
    {
        t = new Test();
        t.val = 10;
        System.out.println("doIt2 t.val: " + t.val); // will print out 10
 
    public static void main(String[] args)
    {
        Test my_t = new Test();
        doIt1(my_t);
        System.out.println("my_t.val: " + my_t.val); // will print out 5
        doIt2(my_t);
        System.out.println("my_t.val: " + my_t.val); // will print out 5
    }
}