/**
 * Shallow copying in Java
 * As a reference model language (for classes) when you make a copy
 * of an object in java, that copy is shallow; ie the only thing that
 * happens is you  get a new reference to same memory location.
 */
public class SCopy {
    // A class containing just an int
    private class AA {
        int theInt=0;
    }

    // A class containing just a reference to another class.
    private class BB {
        AA theAA = new AA();
    }

    // Example of shallow copy in Java
    public void test() {
        BB bb1 = new BB();
        BB bb2 = bb1;
        bb2.theAA.theInt = 42;
        System.out.format("BB2 value of theInt in theAA:%d\n", bb2.theAA.theInt);
        System.out.format("BB1 value of theInt in theAA:%d\n", bb2.theAA.theInt);
    }
    public static void main(String[] args) {
        new SCopy().test();
    }
}