本文主要介紹了面向對象的三大特征實例解析，下面看看具體內容。
封裝一個Teacher和Student類
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package com.hz.test;public class Teacher { private String name; private String majorDirection; private String teachCourse; private int teachAge; public Teacher() { super(); } public Teacher(String name,String majorDirection,String teachCourse,int teachAge) { this.name = name; this.majorDirection = majorDirection; this.teachCourse = teachCourse; this.teachAge = teachAge; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getMajorDirection() { return majorDirection; } public void setMajorDirection(String majorDirection) { this.majorDirection = majorDirection; } public String getTeachCourse() { return teachCourse; } public void setTeachCourse(String teachCourse) { this.teachCourse = teachCourse; } public int getTeachAge() { return teachAge; } public void setTeachAge(int teachAge) { this.teachAge = teachAge; } public String toString() { return "姓名=" + getName() + ", 專業方向=" + getMajorDirection() + ", 所教課程=" + getTeachCourse() + ", 教齡=" + getTeachAge(); }} |
Student類
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package com.hz.test;import java.util.Arrays;/** * @author ztw * */public class Student { private String name; private int age; private String[] courses; private String interest; public Student() { super(); } public Student(String name,int age,String[] courses,String interest) { this.name = name; this.age = age; this.courses = courses; this.interest = interest; } public void setName(String name){ this.name = name; } public String getName(){ return name; } public void setAge(int age){ if(age<0){ System.out.println("年齡不能為負值"); }else{ this.age = age; } } public int getAge(){ return age; } public void setCourses(String[] courses){ this.courses = courses; } public String getCourses(){ return Arrays.toString(courses); } public void setInterest(String interest){ this.interest = interest; } public String getInterest(){ return interest; } public String toString() { return "姓名=" + getName() + ", 年齡=" + getAge() + ", 課程=" + getCourses() + ", 興趣=" + getInterest(); } } |
測試類
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package com.hz.test;public class Test { public static void main(String[] args) { String arr[] = {"阿斯達","是的","大概","太誘惑"}; Student stu = new Student("張三",21,arr,"打球"); Teacher tea = new Teacher("王五","阿斯達","阿斯達",99); System.out.println(stu); System.out.println(tea); }} |
輸出結果：
姓名=張三, 年齡=21, 課程=[阿斯達, 是的, 大概, 太誘惑], 興趣=打球
姓名=王五, 專業方向=阿斯達, 所教課程=阿斯達, 教齡=99
定義Play，TaoistPriest，Master，Warrior
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public class Play { String main; public Play(String main) { this.main = main; } public void hitMonster() { System.out.println(main+"打怪"); }} |
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/** * TaoistPriest:道士 * @author ztw * */public class TaoistPriest extends Play { { System.out.print("我是道士："); } public TaoistPriest(String main) { super(main); }} |
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/** * Master:法師 * @author ztw * */public class Master extends Play{ { System.out.print("我是法師："); } public Master(String main) { super(main); }} |
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/** * Warrior:武士 * @author ztw * */public class Warrior extends Play{ { System.out.print("我是武士："); } public Warrior(String main) { super(main); }} |
測試類
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public class Test { public static void main(String[] args) { TaoistPriest tp = new TaoistPriest("靈魂火符"); tp.hitMonster(); Master m = new Master("雷電術"); m.hitMonster(); Warrior w = new Warrior("烈火術"); w.hitMonster(); }} |
輸出結果：
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我是道士：靈魂火符打怪 我是法師：雷電術打怪 我是武士：烈火術打怪 |
服務器，客戶端交互
LoginListener
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public interface LoginListener { public void succeed(String msg); public void failed(String msg);} |
MyLoginListener
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public class MyLoginListener implements LoginListener{ public void succeed(String msg) { System.out.println(msg); } public void failed(String msg) { System.out.println(msg); }} |
Server
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public class Server { public void login(String userName,String password,LoginListener listener) { System.out.print("loading"); for (int i = 0; i < 10; i++) { try { Thread.sleep(100*i); System.out.print("."); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } } if(userName.equals("zhangsan") && password.equals("123")){ if(listener!=null){ listener.succeed("登錄成功"); } }else{ if(listener!=null){ listener.succeed("登錄失敗"); } } }} |
測試類
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public class LoginTest { public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.println("請輸入用戶名："); String userName = sc.next(); System.out.println("請輸入用戶密碼："); String password = sc.next(); Server server = new Server(); server.login(userName, password, new MyLoginListener()); }} |
輸出結果
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請輸入用戶名： zhangsan 請輸入用戶密碼： 123loading……….登錄成功 |
總結
以上就是本文關于Java面向對象編程（封裝，繼承，多態）實例解析的全部內容，希望對大家有所幫助。如有不足之處，歡迎留言指出。感謝朋友們對本站的支持！
原文鏈接：http://blog.csdn.net/qq_33624284/article/details/53606306
