完成 备忘录模式 Sample

Author: JamesZBL

memento/src/main/java/me/zbl/memento/Application.java

@@ -26,6 +26,8 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.util.Stack;
+
 /**
  * Memento
  */
@@ -34,6 +36,30 @@ public class Application {
   private static final Logger LOGGER = LoggerFactory.getLogger(Application.class);
 
   public static void main(String[] args) {
+    Stack<Plant> stack = new Stack<>();
+
+    Flower flower = new Flower(FlowerType.SEED, "水仙花", 1, 2);
+    stack.add(flower.getMemento());
+    LOGGER.info(flower.toString());
+    flower.growing();
+    stack.add(flower.getMemento());
+    LOGGER.info(flower.toString());
+    flower.growing();
+    stack.add(flower.getMemento());
+    LOGGER.info(flower.toString());
+    flower.growing();
+    stack.add(flower.getMemento());
+    LOGGER.info(flower.toString());
+    flower.growing();
+    stack.add(flower.getMemento());
+    LOGGER.info(flower.toString());
+    flower.growing();
+    stack.add(flower.getMemento());
+    LOGGER.info(flower.toString());
 
+    while (stack.size() > 0) {
+      flower.setMemento(stack.pop());
+      LOGGER.info(flower.toString());
+    }
   }
 }

memento/src/main/java/me/zbl/memento/Flower.java

@@ -71,6 +71,11 @@ void setMemento(Plant plant) {
     setWeight(flowerMemento.getWeight());
   }
 
+  @Override
+  public String toString() {
+    return String.format("名称：%s\t状态：%s\t质量：%d克\t高度：%d厘米", getName(), getType(), getWeight(), getHeight());
+  }
+
   public Flower(FlowerType type, String name, int height, int weight) {
     this.type = type;
     this.name = name;

memento/src/main/java/me/zbl/memento/FlowerType.java

@@ -35,4 +35,9 @@ public enum FlowerType {
   FlowerType(String name) {
     this.name = name;
   }
+
+  @Override
+  public String toString() {
+    return name;
+  }
 }