增加Builder设计模式

byhieg · byhieg · commit dfdea9649299 · 2017-05-07T12:12:31.000+08:00
diff --git a/src/main/java/cn/byhieg/designpatterntutorial/builder/Person.java b/src/main/java/cn/byhieg/designpatterntutorial/builder/Person.java
@@ -0,0 +1,73 @@
+package cn.byhieg.designpatterntutorial.builder;
+
+/**
+ * Created by shiqifeng on 2017/5/7.
+ * Mail byhieg@gmail.com
+ */
+public class Person {
+
+    private int age;
+    private String name;
+    private int height;
+    private int weight;
+
+    public int getAge() {
+        return age;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getHeight() {
+        return height;
+    }
+
+    public int getWeight() {
+        return weight;
+    }
+
+    public Person(Builder builder) {
+        age = builder.age;
+        name = builder.name;
+        height = builder.height;
+        weight = builder.weight;
+    }
+
+    @Override
+    public String toString() {
+        return "age = " + age + " name  = " + name + " height = " + height + " weight = " + weight;
+    }
+
+    public static class Builder{
+
+        private int age;
+        private String name;
+        private int height;
+        private int weight;
+
+        public Builder setAge(int age) {
+            this.age = age;
+            return this;
+        }
+
+        public Builder setName(String name) {
+            this.name = name;
+            return this;
+        }
+
+        public Builder setHeight(int height) {
+            this.height = height;
+            return this;
+        }
+
+        public Builder setWeight(int weight) {
+            this.weight = weight;
+            return this;
+        }
+
+        public Person build() {
+            return new Person(this);
+        }
+    }
+}
diff --git a/src/test/java/cn/byhieg/designpatterntutorialtest/BuilderTest.java b/src/test/java/cn/byhieg/designpatterntutorialtest/BuilderTest.java
@@ -0,0 +1,16 @@
+package cn.byhieg.designpatterntutorialtest;
+
+import cn.byhieg.designpatterntutorial.builder.Person;
+import junit.framework.TestCase;
+
+/**
+ * Created by shiqifeng on 2017/5/7.
+ * Mail byhieg@gmail.com
+ */
+public class BuilderTest extends TestCase {
+    public void testBuild() throws Exception {
+        Person person = new Person.Builder().setAge(24).setHeight(178).setName("byhieg").setWeight(80).build();
+        System.out.println(person.toString());
+    }
+
+}
