坦克大战（一期）-设计模式-组合composite（树状结构专用模式）

src/main/java/com/msb/composite/BranchNode.java

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+package com.msb.composite;/**
+ * @Author bingor
+ * @Date 2022/10/14 18:49
+ * @Description: com.msb.composite
+ * @Version: 1.0
+ */
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ *@ClassName BranchNode
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/14 18:49
+ *@Version 3.0
+ */
+public class BranchNode extends Node {
+
+    private String name;
+    private List<Node> nodes = new ArrayList<>();
+
+    public BranchNode(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public void print() {
+        System.out.println(this.name);
+    }
+
+    public void addNode(Node node) {
+        nodes.add(node);
+    }
+
+    public List<Node> getNodes() {
+        return this.nodes;
+    }
+
+}

src/main/java/com/msb/composite/LeafNode.java

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+package com.msb.composite;/**
+ * @Author bingor
+ * @Date 2022/10/14 16:22
+ * @Description: com.msb.composite
+ * @Version: 1.0
+ */
+
+/**
+ *@ClassName LeafNode
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/14 16:22
+ *@Version 3.0
+ */
+public class LeafNode extends Node {
+
+    private String content;
+
+    public LeafNode(String content) {
+        this.content = content;
+    }
+
+    @Override
+    public void print() {
+        System.out.println(this.content);
+    }
+}

src/main/java/com/msb/composite/Main.java

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+package com.msb.composite;/**
+ * @Author bingor
+ * @Date 2022/10/14 18:54
+ * @Description: com.msb.composite
+ * @Version: 1.0
+ */
+
+/**
+ *@ClassName Main
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/14 18:54
+ *@Version 3.0
+ */
+public class Main {
+
+    public static void main(String[] args) {
+        BranchNode root = new BranchNode("root");
+        BranchNode chapter1 = new BranchNode("chapter1");
+        BranchNode chapter2 = new BranchNode("chapter2");
+        LeafNode c11 = new LeafNode("c11");
+        LeafNode c12 = new LeafNode("c12");
+        BranchNode c2b1 = new BranchNode("c2b1");
+        LeafNode c2b11 = new LeafNode("c2b11");
+        LeafNode c2b12 = new LeafNode("c2b12");
+
+        root.addNode(chapter1);
+        root.addNode(chapter2);
+        chapter1.addNode(c11);
+        chapter1.addNode(c12);
+        chapter2.addNode(c2b1);
+        c2b1.addNode(c2b11);
+        c2b1.addNode(c2b12);
+
+        tree(root, 0);
+    }
+
+    private static void tree(Node root, int depth) {
+        for (int i=0; i<depth; i++) {
+            System.out.print("--");
+        }
+        root.print();
+        if(root instanceof BranchNode) {
+            for(Node node : ((BranchNode) root).getNodes()) {
+                tree(node, depth+1);
+            }
+        }
+    }
+
+}

src/main/java/com/msb/composite/Node.java

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+package com.msb.composite;/**
+ * @Author bingor
+ * @Date 2022/10/14 16:22
+ * @Description: com.msb.composite
+ * @Version: 1.0
+ */
+
+/**
+ *@ClassName Node
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/14 16:22
+ *@Version 3.0
+ */
+public abstract class Node {
+    public abstract void print();
+}