\u51e6\u7406\u524d\u306e\u5185\u90e8\u72b6\u614b(Memento)\u3092\u4fdd\u6301\u3057\u3001\u72b6\u614b\u3092\u5fa9\u5143\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n\n\n\n
package com.example.memento;\r\n\r\npublic class Memento {\r\n int protectedInfo;\r\n\r\n Memento(int protectedInfo) {\r\n this.protectedInfo = protectedInfo;\r\n }\r\n\r\n int getProtectedInfo() {\r\n return protectedInfo;\r\n }\r\n\r\n public int getPublicInfo() {\r\n return protectedInfo;\r\n }\r\n}\r\n<\/code><\/pre>\n\n\n\npackage com.example.memento;\r\n\r\npublic class Originator {\r\n private int info;\r\n\r\n public Originator(int info) {\r\n this.info = info;\r\n }\r\n\r\n public Memento createMemento() {\r\n Memento memento = new Memento(info);\r\n return memento;\r\n }\r\n\r\n public void restoreMemento(Memento memento) {\r\n this.info = memento.protectedInfo;\r\n }\r\n\r\n public void process() {\r\n info++;\r\n }\r\n\r\n public String toString() {\r\n return Integer.toString(info);\r\n }\r\n}\r\n<\/code><\/pre>\n\n\n\npackage com.example.main;
import com.example.memento.Memento;
import com.example.memento.Originator;
public class Caretaker {
public static void main(String[] args) {
int info = 1;
Originator originator = new Originator(info);
Memento memento = originator.createMemento();
originator.process(); \/\/ \u66f4\u65b0
originator.toString(); \/\/ \u51fa\u529b
originator.restoreMemento(memento); \/\/ \u30ec\u30b9\u30c8\u30a2
originator.toString(); \/\/ \u51fa\u529b
}
}<\/pre>\n\n\n\nMemento\u3068Originator \u306f\u540c\u3058\u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u542b\u307e\u308c\u307e\u3059\u304c\u3001Caretaker \u306f\u5225\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u3067\u69cb\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n
Caretaker \u306fMemento\u3092\u4fdd\u6301\u3057\u3001\u597d\u304d\u306a\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u5fa9\u5143\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001Caretaker \u306f\u76f4\u63a5Memento\u306e\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u63db\u3048\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n
\u306a\u306e\u3067\u3001\u30c7\u30fc\u30bf\u306e\u4e00\u8cab\u6027\u3092\u4fdd\u6301\u3057\u3064\u3064\u3001\u30c7\u30fc\u30bf\u3092\u5fa9\u5143\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
\u51e6\u7406\u524d\u306e\u5185\u90e8\u72b6\u614b(Memento)\u3092\u4fdd\u6301\u3057\u3001\u72b6\u614b\u3092\u5fa9\u5143\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002 package com.example.main;import com.example.memento.Memento;import com.exa … \u7d9a\u304d\u3092\u8aad\u3080 \u3010\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3011MEMENTO\u30d1\u30bf\u30fc\u30f3<\/span>