对象和类

codes/TechSister/src/main/java/com/itwanger/sixteen/Person.java

+package com.itwanger.sixteen;
+
+/**
+ * 微信搜索「沉默王二」，回复 Java
+ *
+ * @author 沉默王二
+ * @date 2020/11/19
+ */
+public class Person {
+    private String name;
+    private int age;
+    private int sex;
+
+    private void eat() {
+
+    }
+
+    private void sleep() {
+
+    }
+
+    private void dadoudou() {
+
+    }
+}

codes/TechSister/src/main/java/com/itwanger/sixteen/Pig.java

+package com.itwanger.sixteen;
+
+/**
+ * 微信搜索「沉默王二」，回复 Java
+ *
+ * @author 沉默王二
+ * @date 2020/11/19
+ */
+public class Pig {
+    private String color;
+
+    public void eat() {
+        System.out.println("吃");
+    }
+}