小编ros*_*ose的帖子

我对 Array 列表中的克隆概念感到困惑。例如：

Balloon green = new Balloon("Green",new Address("greenState", "greencity"));
Balloon green2 = (Balloon)green.clone();
green.setColor("NewGreen");
System.out.println(green);
System.out.println(green2);//color not affected in copy as color is of String type.
                           //Immutable objects are not shallow copied.
green.getAddress().state="helloState";
System.out.println(green);
System.out.println(green2);//Address does get affected

输出：-

Balloon[color = NewGreen Address = Address {state = greenState, city = greencity}]
Balloon[color = Green Address = Address {state = greenState, city = greencity}]
Balloon[color = NewGreen Address = Address {state = helloState, city = greencity}]
Balloon[color = Green Address …