设计模式-原型模式

1.定义

2.UML

3.代码

public class PrototypeClass implements Cloneable {

public ArrayList<String> mList = new ArrayList<String>();

public PrototypeClass() {
System.out.println("clone对象不会执行构造函数");
}

@Override
protected PrototypeClass clone() {
PrototypeClass obj = null;
try {
obj = (PrototypeClass) super.clone();
obj.mList = (ArrayList<String>) mList.clone();
} catch (CloneNotSupportedException e) {
e.printStackTrace();
}
return obj;
}
}

public class Client {

public static void main(String[] args) {
PrototypeClass prototypeObject = new PrototypeClass();
prototypeObject.mList.add("张三");
PrototypeClass newPrototypeObject = prototypeObject.clone();
newPrototypeObject.mList.add("李四");
}
}

4.注意事项