{"id":72832,"date":"2026-02-06T17:00:09","date_gmt":"2026-02-06T09:00:09","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/72832.html"},"modified":"2026-02-06T17:00:09","modified_gmt":"2026-02-06T09:00:09","slug":"%e4%bb%8e0%e5%bc%80%e5%a7%8b%e5%ad%a6java%e7%ac%ac%e5%8d%81%e4%ba%94%e5%a4%a9%e9%9d%a2%e5%90%91%e5%af%b9%e8%b1%a1%e8%bf%9b%e9%98%b6%ef%bc%88%e6%8a%bd%e8%b1%a1%e7%b1%bb%e6%8e%a5%e5%8f%a3","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/72832.html","title":{"rendered":"[\u4ece0\u5f00\u59cb\u5b66Java|\u7b2c\u5341\u4e94\u5929]\u9762\u5411\u5bf9\u8c61\u8fdb\u9636\uff08\u62bd\u8c61\u7c7b&\u63a5\u53e3&\u5185\u90e8\u7c7b\uff09"},"content":{"rendered":"

\u62bd\u8c61\u7c7b\u548c\u62bd\u8c61\u65b9\u6cd5<\/h2>\n

\u62bd\u8c61\u7c7b\u548c\u62bd\u8c61\u65b9\u6cd5\u7684\u6982\u5ff5<\/h3>\n

\"\"<\/p>\n

\u62bd\u8c61\u7c7b\u548c\u62bd\u8c61\u65b9\u6cd5\u7684\u5b9a\u4e49\u683c\u5f0f<\/h3>\n

\"\"<\/p>\n

\u62bd\u8c61\u7c7b\u548c\u62bd\u8c61\u65b9\u6cd5\u7684\u6ce8\u610f\u4e8b\u9879<\/h3>\n

\"\"<\/p>\n

\u4f8b\u5982：<\/p>\n

（\u6e90\u4ee3\u7801）<\/p>\n

[Person]<\/p>\n

package com.itheima.a01abstractdemo1;<\/p>\n

public abstract class Person {
\n private String name;
\n private int age;<\/p>\n

\/\/\u5f53\u521b\u5efa\u5b50\u7c7b\u5bf9\u8c61\u65f6，\u7ed9\u5c5e\u6027\u8d4b\u503c\u7684
\n public Person() {
\n }<\/p>\n

public Person(String name, int age) {
\n this.name = name;
\n this.age = age;
\n }<\/p>\n

public String getName() {
\n return name;
\n }<\/p>\n

public void setName(String name) {
\n this.name = name;
\n }<\/p>\n

public int getAge() {
\n return age;
\n }<\/p>\n

public void setAge(int sge) {
\n this.age = age;
\n }<\/p>\n

public abstract void work();<\/p>\n

public void sleep(){
\n System.out.println("\u7761\u89c9");
\n }
\n}<\/p>\n

[Student]<\/p>\n

package com.itheima.a01abstractdemo1;<\/p>\n

public class Student extends Person{<\/p>\n

public Student() {
\n }<\/p>\n

public Student(String name, int sge) {
\n super(name, sge);
\n }<\/p>\n

@Override
\n public void work(){
\n System.out.println("\u5b66\u751f\u7684\u5de5\u4f5c\u662f\u5b66\u4e60");
\n }<\/p>\n

}<\/p>\n

[Test]<\/p>\n

package com.itheima.a01abstractdemo1;<\/p>\n

public class Test {
\n public static void main(String[] args) {<\/p>\n

Student s = new Student("zhangsan",23);
\n System.out.println(s.getName() + ", " + s.getAge());
\n }
\n}<\/p>\n

(\u8fd0\u884c\u7ed3\u679c\u622a\u56fe)<\/p>\n

\"\"<\/p>\n<\/p>\n

\u7ec3\u4e60：\u7f16\u5199\u5e26\u6709\u62bd\u8c61\u7c7b\u7684\u6807\u51c6javabean\u7c7b\u7684<\/h3>\n

\"\"<\/p>\n

（\u5206\u6790）<\/p>\n

\"\"<\/p>\n

(\u6e90\u4ee3\u7801)<\/p>\n

[Animal]<\/p>\n

package com.itheima.a02abstractdemo2;<\/p>\n

public abstract class Animal {
\n private String name;
\n private int age;<\/p>\n

public Animal() {
\n }<\/p>\n

public Animal(String name, int age) {
\n this.name = name;
\n this.age = age;
\n }<\/p>\n

public String getName() {
\n return name;
\n }<\/p>\n

public void setName(String name) {
\n this.name = name;
\n }<\/p>\n

public int getAge() {
\n return age;
\n }<\/p>\n

public void setAge(int age) {
\n this.age = age;
\n }<\/p>\n

public abstract void eat();<\/p>\n

public void drink(){
\n System.out.println("\u52a8\u7269\u5728\u559d\u6c34");
\n }<\/p>\n

}<\/p>\n

[Frog]<\/p>\n

package com.itheima.a02abstractdemo2;<\/p>\n

public class Frog extends Animal{<\/p>\n

public Frog() {
\n }<\/p>\n

public Frog(String name, int age) {
\n super(name, age);
\n }<\/p>\n

@Override
\n public void eat(){
\n System.out.println("\u9752\u86d9\u5728\u5403\u866b\u5b50");
\n }<\/p>\n

}<\/p>\n

[Dog]<\/p>\n

package com.itheima.a02abstractdemo2;<\/p>\n

public class Dog extends Animal{<\/p>\n

public Dog() {
\n }<\/p>\n

public Dog(String name, int age) {
\n super(name, age);
\n }<\/p>\n

@Override
\n public void eat(){
\n System.out.println("\u72d7\u5728\u5403\u9aa8\u5934");
\n }
\n}<\/p>\n

[Sheep]<\/p>\n

package com.itheima.a02abstractdemo2;<\/p>\n

public class Sheep extends Animal{<\/p>\n

public Sheep() {
\n }<\/p>\n

public Sheep(String name, int age) {
\n super(name, age);
\n }<\/p>\n

@Override
\n public void eat(){
\n System.out.println("\u5c71\u7f8a\u5728\u5403\u8349");
\n }<\/p>\n

}<\/p>\n

[Test]<\/p>\n

package com.itheima.a02abstractdemo2;<\/p>\n

public class Test {
\n public static void main(String[] args){<\/p>\n

\/\/\u521b\u5efa\u5bf9\u8c61
\n Dog d = new Dog("\u5927\u9ec4",1);
\n System.out.println(d.getName() + ", " + d.getAge());
\n d.eat();
\n d.drink();<\/p>\n

}
\n}<\/p>\n

(\u8fd0\u884c\u7ed3\u679c\u622a\u56fe)<\/p>\n

\"\"<\/p>\n<\/p>\n

\u62bd\u8c61\u7c7b\u548c\u62bd\u8c61\u65b9\u6cd5\u7684\u610f\u4e49<\/h3>\n

\"\"<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5f3a\u5236\u5b50\u7c7b\u5fc5\u987b\u6309\u7167\u8fd9\u79cd\u683c\u5f0f\u8fdb\u884c\u7f16\u5199<\/span><\/p>\n

\"\"<\/p>\n<\/p>\n

\u603b\u7ed3<\/h4>\n

\"\"<\/p>\n<\/p>\n

\u63a5\u53e3<\/h2>\n

\u4e3a\u4ec0\u4e48\u8981\u6709\u63a5\u53e3？<\/h3>\n

\"\"<\/p>\n

\u63a5\u53e3\u7684\u5e94\u7528<\/h3>\n

\"\"<\/p>\n

\u63a5\u53e3\u548c\u62bd\u8c61\u7c7b\u7684\u5f02\u540c<\/h3>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u63a5\u53e3\u5c31\u662f\u4e00\u79cd\u89c4\u5219，\u662f\u5bf9\u884c\u4e3a\u7684\u62bd\u8c61<\/p>\n

\"\"<\/p>\n

\u63a5\u53e3\u7684\u5b9a\u4e49\u548c\u4f7f\u7528<\/h3>\n

\"\"<\/p>\n<\/p>\n

\u7ec3\u4e60：\u7f16\u5199\u5e26\u6709\u63a5\u53e3\u548c\u62bd\u8c61\u7c7b\u7684\u6807\u51c6javabean\u7c7b<\/h3>\n

\"\"<\/p>\n

（\u6e90\u4ee3\u7801）<\/p>\n

[Animal]<\/p>\n

package com.itheima.a01interfacedemo1;<\/p>\n

public abstract class Animal {
\n private String name;
\n private int age;<\/p>\n

public Animal() {
\n }<\/p>\n

public Animal(String name,int age){
\n this.name = name;
\n this.age = age;
\n }<\/p>\n

public String getName(){
\n return name;
\n }<\/p>\n

public void setName(String name){
\n this.name = name;
\n }<\/p>\n

public int getAge(){
\n return age;
\n }<\/p>\n

public void setAge(int age){
\n this.age = age;
\n }<\/p>\n

public abstract void eat();<\/p>\n

}<\/p>\n

[Swim](\u63a5\u53e3interface)<\/p>\n

package com.itheima.a01interfacedemo1;<\/p>\n

public interface Swim {<\/p>\n

public abstract void swim();<\/p>\n

}<\/p>\n

[Rabbit]<\/p>\n

package com.itheima.a01interfacedemo1;<\/p>\n

public class Rabbit extends Animal{<\/p>\n

public Rabbit(){
\n }<\/p>\n

public Rabbit(String name,int age){
\n super(name,age);
\n }<\/p>\n

@Override
\n public void eat(){
\n System.out.println("\u5154\u5b50\u5728\u5403\u8349");
\n }<\/p>\n

}<\/p>\n

[Frog]<\/p>\n

package com.itheima.a01interfacedemo1;<\/p>\n

public class Frog extends Animal implements Swim{<\/p>\n

public Frog() {
\n }<\/p>\n

public Frog(String name, int age) {
\n super(name, age);
\n }<\/p>\n

@Override
\n public void eat(){
\n System.out.println("\u9752\u86d9\u5728\u5403\u866b\u5b50");
\n }<\/p>\n

@Override
\n public void swim(){
\n System.out.println("\u9752\u86d9\u5728\u86d9\u6cf3");
\n }<\/p>\n

}<\/p>\n

[Dog]<\/p>\n

package com.itheima.a01interfacedemo1;<\/p>\n

public class Dog extends Animal implements Swim{<\/p>\n

public Dog() {
\n }<\/p>\n

public Dog(String name, int age) {
\n super(name, age);
\n }<\/p>\n

@Override
\n public void eat(){
\n System.out.println("\u72d7\u5728\u5403\u9aa8\u5934");
\n }<\/p>\n

@Override
\n public void swim(){
\n System.out.println("\u72d7\u5728\u72d7\u5228");
\n }<\/p>\n

}<\/p>\n

[Test]<\/p>\n

package com.itheima.a01interfacedemo1;<\/p>\n

public class Test {
\n public static void main(String[] args) {
\n \/\/\u521b\u5efa\u5bf9\u8c61
\n Dog d = new Dog("\u5927\u9ec4",1);
\n System.out.println(d.getName() + ", " + d.getAge());
\n d.eat();
\n d.swim();<\/p>\n

Rabbit r = new Rabbit("\u5c0f\u767d",1);
\n System.out.println(r.getName() + ", " + r.getAge());
\n r.eat();<\/p>\n

}
\n}<\/p>\n

(\u8fd0\u884c\u7ed3\u679c\u622a\u56fe)<\/p>\n

\"\"<\/p>\n<\/p>\n

\u63a5\u53e3\u7684\u7ec6\u8282：\u6210\u5458\u7279\u70b9\u548c\u63a5\u53e3\u7684\u5404\u79cd\u5173\u7cfb<\/h2>\n

\u63a5\u53e3\u4e2d\u6210\u5458\u7684\u7279\u70b9<\/h3>\n

\"\"<\/p>\n<\/p>\n

\u63a5\u53e3\u548c\u7c7b\u4e4b\u95f4\u7684\u5173\u7cfb<\/h3>\n

\"\"<\/p>\n

\u7c7b\u548c\u63a5\u53e3\u7684\u5173\u7cfb\u4e2d\u7684\u5c0f\u7ec6\u8282：<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5982\u679c\u540c\u65f6\u5b9e\u73b0\u591a\u4e2a\u63a5\u53e3，\u5c31\u8981\u91cd\u5199\u91cc\u9762\u6240\u6709\u7684\u62bd\u8c61\u65b9\u6cd5<\/p>\n

\u63a5\u53e3\u548c\u63a5\u53e3\u7684\u5173\u7cfb\u4e2d\u7684\u5c0f\u7ec6\u8282：<\/span><\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u5b9e\u73b0\u7c7b\u662f\u5b9e\u73b0\u7684\u6700\u4e0b\u9762\u7684\u5b50\u63a5\u53e3\u7684\u8bdd，\u9700\u8981\u91cd\u5199\u4f53\u7cfb\u4e2d\u6240\u6709\u7684\u62bd\u8c61\u65b9\u6cd5<\/p>\n<\/p>\n

\u63a5\u53e3\u548c\u62bd\u8c61\u7c7b\u7684\u7efc\u5408\u6848\u4f8b<\/h3>\n

\"\"<\/p>\n

（\u5206\u6790）<\/p>\n

\u3010\u601d\u8def1\u3011<\/p>\n

\"\"<\/p>\n

\u3010\u601d\u8def2\u3011（\u66f4\u63a8\u8350\u7684\u65b9\u6848）<\/p>\n

\"\"<\/p>\n

（\u6e90\u4ee3\u7801）<\/p>\n

[Person]<\/p>\n

package com.itheima.a05interfacedemo5;<\/p>\n

public class Person {
\n private String name;
\n private int age;<\/p>\n

public Person() {
\n }<\/p>\n

public Person(String name, int age) {
\n this.name = name;
\n this.age = age;
\n }<\/p>\n

public String getName() {
\n return name;
\n }<\/p>\n

public void setName(String name) {
\n this.name = name;
\n }<\/p>\n

public int getAge() {
\n return age;
\n }<\/p>\n

public void setAge(int age) {
\n this.age = age;
\n }
\n}<\/p>\n

[English](\u63a5\u53e3interface)<\/p>\n

package com.itheima.a05interfacedemo5;<\/p>\n

public interface English {<\/p>\n

public abstract void speakEnglish();<\/p>\n

}<\/p>\n

[Sporter]<\/p>\n

package com.itheima.a05interfacedemo5;<\/p>\n

public abstract class Sporter extends Person{<\/p>\n

public Sporter() {
\n }<\/p>\n

public Sporter(String name, int age) {
\n super(name, age);
\n }<\/p>\n

public abstract void study();<\/p>\n

}<\/p>\n

[Coach]<\/p>\n

package com.itheima.a05interfacedemo5;<\/p>\n

public abstract class Coach extends Person{<\/p>\n

public Coach() {
\n }<\/p>\n

public Coach(String name, int age) {
\n super(name, age);
\n }<\/p>\n

public abstract void teach();<\/p>\n

}<\/p>\n

[PingPangSporter]<\/p>\n

package com.itheima.a05interfacedemo5;<\/p>\n

public class PingPangSporter extends Sporter implements English{<\/p>\n

public PingPangSporter() {
\n }<\/p>\n

public PingPangSporter(String name, int age) {
\n super(name, age);
\n }<\/p>\n

@Override
\n public void study(){
\n System.out.println("\u4e52\u4e53\u7403\u8fd0\u52a8\u5458\u5728\u5b66\u6253\u4e52\u4e53\u7403");
\n }<\/p>\n

@Override
\n public void speakEnglish(){
\n System.out.println("\u4e52\u4e53\u7403\u8fd0\u52a8\u5458\u5728\u8bf4\u82f1\u8bed");
\n }<\/p>\n

}<\/p>\n

[BasketballSporter]<\/p>\n

package com.itheima.a05interfacedemo5;<\/p>\n

public class BasketballSporter extends Sporter{<\/p>\n

public BasketballSporter() {
\n }<\/p>\n

public BasketballSporter(String name, int age) {
\n super(name, age);
\n }<\/p>\n

@Override
\n public void study(){
\n System.out.println("\u7bee\u7403\u8fd0\u52a8\u5458\u5728\u5b66\u6253\u7bee\u7403");
\n }
\n}<\/p>\n

[PingPangCoach]<\/p>\n

package com.itheima.a05interfacedemo5;<\/p>\n

public class PingPangCoach extends Coach implements English{<\/p>\n

public PingPangCoach() {
\n }<\/p>\n

public PingPangCoach(String name, int age) {
\n super(name, age);
\n }<\/p>\n

@Override
\n public void teach(){
\n System.out.println("\u4e52\u4e53\u7403\u6559\u7ec3\u5728\u6559\u6253\u4e52\u4e53\u7403");
\n }<\/p>\n

@Override
\n public void speakEnglish(){
\n System.out.println("\u4e52\u4e53\u7403\u6559\u7ec3\u5728\u8bf4\u82f1\u8bed");
\n }
\n}<\/p>\n

[BasketballCoach]<\/p>\n

package com.itheima.a05interfacedemo5;<\/p>\n

public class BasketballCoach extends Coach {<\/p>\n

public BasketballCoach() {
\n }<\/p>\n

public BasketballCoach(String name, int age) {
\n super(name, age);
\n }<\/p>\n

@Override
\n public void teach(){
\n System.out.println("\u7bee\u7403\u6559\u7ec3\u5728\u6559\u6253\u7bee\u7403");
\n }<\/p>\n

}<\/p>\n

[Test]<\/p>\n

package com.itheima.a05interfacedemo5;<\/p>\n

public class Test {
\n public static void main(String[] args){<\/p>\n

PingPangSporter pps = new PingPangSporter("\u5f20\u4e09",23);
\n System.out.println(pps.getName() + "," + pps.getAge());
\n pps.study();
\n pps.speakEnglish();<\/p>\n

BasketballCoach bc = new BasketballCoach("\u674e\u56db",24);
\n System.out.println(bc.getName() + "," + bc.getAge());
\n bc.teach();<\/p>\n

}
\n}<\/p>\n

（\u8fd0\u884c\u7ed3\u679c\u622a\u56fe）<\/p>\n

\"\"<\/p>\n<\/p>\n

\u591a\u5b66\u4e09\u62db：\u63a5\u53e3\u4e2d\u65b0\u589e\u65b9\u6cd5，\u63a5\u53e3\u5e94\u7528\u548c\u9002\u914d\u5668\u8bbe\u8ba1\u6a21\u5f0f<\/h2>\n

\"\"<\/p>\n<\/p>\n

JDK8\u5f00\u59cb\u63a5\u53e3\u4e2d\u65b0\u589e\u7684\u65b9\u6cd5<\/h3>\n

\"\"<\/p>\n<\/p>\n

JDK8\u65b0\u589e\u7684\u65b9\u6cd5<\/h4>\n

JDK8\u7684\u65b0\u7279\u6027：\u9ed8\u8ba4\u65b9\u6cd5<\/h5>\n

\"\"<\/p>\n

\u4f8b\u5982：<\/p>\n

（\u6e90\u4ee3\u7801）<\/p>\n

[Inter]（\u63a5\u53e3Interface）<\/p>\n

package com.itheima.a06interfacedemo6;<\/p>\n

public interface Inter {<\/p>\n

public abstract void method();<\/p>\n

public default void show(){
\n System.out.println("\u63a5\u53e3\u4e2d\u7684\u9ed8\u8ba4\u65b9\u6cd5 — show");
\n }<\/p>\n

}<\/p>\n

[InterImp]<\/p>\n

package com.itheima.a06interfacedemo6;<\/p>\n

import java.sql.SQLOutput;<\/p>\n

public class InterImp implements Inter{
\n @Override
\n public void method(){
\n System.out.println("\u5b9e\u73b0\u7c7b\u91cd\u5199\u7684\u62bd\u8c61\u65b9\u6cd5");
\n }<\/p>\n

@Override
\n public void show(){
\n System.out.println("\u91cd\u5199\u63a5\u53e3\u4e2d\u7684\u9ed8\u8ba4\u65b9\u6cd5");
\n }<\/p>\n

}<\/p>\n

[Test]<\/p>\n

package com.itheima.a06interfacedemo6;<\/p>\n

public class Test {
\n public static void main(String[] args) {
\n InterImp ii = new InterImp();
\n ii.method();
\n ii.show();
\n }
\n}<\/p>\n

JDK8\u7684\u65b0\u7279\u6027：\u9759\u6001\u65b9\u6cd5<\/h5>\n

\"\"<\/p>\n

\u4f8b\u5982：<\/p>\n

（\u6e90\u4ee3\u7801）<\/p>\n

[Inter]<\/p>\n

package com.itheima.a07interfacedemo7;<\/p>\n

public interface Inter {
\n public abstract void method();<\/p>\n

public static void show(){
\n System.out.println("Inter\u63a5\u53e3\u4e2d\u7684\u9759\u6001\u65b9\u6cd5");
\n }<\/p>\n

}<\/p>\n

[InterImp]<\/p>\n

package com.itheima.a07interfacedemo7;<\/p>\n

public class InterImp implements Inter{
\n @Override
\n public void method(){
\n System.out.println("InterImp\u91cd\u5199\u7684\u62bd\u8c61\u65b9\u6cd5");
\n }<\/p>\n

\/\/\u4e0d\u53eb\u91cd\u5199：\u521a\u597d\u5728\u5b9e\u73b0\u7c7b\u4e2d\u8ddf\u63a5\u53e3\u91cc\u9762\u6709\u4e00\u4e2a\u91cd\u540d\u7684\u65b9\u6cd5
\n public static void show(){
\n System.out.println("InterImp\u91cd\u5199\u7684\u62bd\u8c61\u65b9\u6cd5");
\n }
\n}<\/p>\n

[Test]<\/p>\n

package com.itheima.a07interfacedemo7;<\/p>\n

public class Test {
\n public static void main(String[] args) {
\n \/\/\u8c03\u7528\u63a5\u53e3\u4e2d\u7684\u9759\u6001\u65b9\u6cd5
\n Inter.show();<\/p>\n

\/\/\u8c03\u7528\u5b9e\u73b0\u7c7b\u4e2d\u7684\u9759\u6001\u65b9\u6cd5
\n InterImp.show();
\n }
\n}<\/p>\n

(\u8fd0\u884c\u7ed3\u679c\u622a\u56fe)<\/p>\n

\"\"<\/p>\n<\/p>\n

JDK9\u65b0\u589e\u7684\u65b9\u6cd5<\/h4>\n

\"\"<\/p>\n<\/p>\n

\u3010\u683c\u5f0f1\u3011：\u666e\u901a\u7684\u79c1\u6709\u65b9\u6cd5（\u7ed9\u9ed8\u8ba4\u65b9\u6cd5\u670d\u52a1\u7684）<\/h5>\n

（\u6e90\u4ee3\u7801）<\/p>\n

package com.itheima.a08interfacedemo8;<\/p>\n

public interface InterA {<\/p>\n

\/\/\u9ed8\u8ba4\u65b9\u6cd5
\n public default void show1(){
\n System.out.println("show1\u5f00\u59cb\u6267\u884c\u4e86");
\n show3();
\n }<\/p>\n

public default void show2(){
\n System.out.println("show2\u5f00\u59cb\u6267\u884c\u4e86");
\n show3();
\n }<\/p>\n

\/\/\u666e\u901a\u7684\u79c1\u6709\u65b9\u6cd5，\u7ed9\u9ed8\u8ba4\u65b9\u6cd5\u670d\u52a1\u7684
\n private void show3(){
\n System.out.println("\u8bb0\u5f55\u7a0b\u5e8f\u5728\u8fd0\u884c\u4e2d\u7684\u5404\u79cd\u7ec6\u8282，\u8fd9\u91cc\u6709100\u884c\u4ee3\u7801");
\n }<\/p>\n

}<\/p>\n

\u3010\u683c\u5f0f2\u3011：\u9759\u6001\u7684\u79c1\u6709\u65b9\u6cd5（\u7ed9\u9759\u6001\u65b9\u6cd5\u670d\u52a1\u7684）<\/h5>\n

（\u6e90\u4ee3\u7801）<\/p>\n

package com.itheima.a08interfacedemo8;<\/p>\n

public interface InterB {
\n \/\/\u9759\u6001\u65b9\u6cd5
\n public static void show1(){
\n System.out.println("show1\u5f00\u59cb\u6267\u884c\u4e86");
\n show4();
\n }<\/p>\n

public static void show2(){
\n System.out.println("show2\u5f00\u59cb\u6267\u884c\u4e86");
\n show4();
\n }<\/p>\n

\/\/\u9759\u6001\u7684\u79c1\u6709\u65b9\u6cd5，\u7ed9\u9759\u6001\u65b9\u6cd5\u670d\u52a1\u7684
\n private static void show4(){
\n System.out.println("\u8bb0\u5f55\u7a0b\u5e8f\u5728\u8fd0\u884c\u4e2d\u7684\u5404\u79cd\u7ec6\u8282，\u8fd9\u91cc\u6709100\u884c\u4ee3\u7801");
\n }<\/p>\n

}<\/p>\n

\u603b\u7ed3<\/h4>\n

\"\"<\/p>\n<\/p>\n

\u63a5\u53e3\u7684\u5e94\u7528<\/h3>\n

\"\"<\/p>\n<\/p>\n

\u603b\u7ed3<\/h5>\n

\"\"<\/p>\n<\/p>\n

\u9002\u914d\u5668\u8bbe\u8ba1\u6a21\u5f0f<\/h3>\n

\u8bbe\u8ba1\u6a21\u5f0f\u548c\u9002\u914d\u5668\u8bbe\u8ba1\u6a21\u5f0f\u7684\u6982\u5ff5<\/h4>\n

\"\"<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5728\u5b9e\u73b0\u7c7b\u548c\u63a5\u53e3\u4e2d\u6dfb\u52a0\u4e86\u7b2c\u4e09\u8005<\/p>\n

\u4f8b\u5982：<\/p>\n

（\u6e90\u4ee3\u7801）<\/p>\n

[Inter]<\/p>\n

package com.itheima.a09interfacedemo9;<\/p>\n

public interface Inter {
\n public abstract void method1();
\n public abstract void method2();
\n public abstract void method3();
\n public abstract void method4();
\n public abstract void method5();
\n public abstract void method6();
\n public abstract void method7();
\n public abstract void method8();
\n public abstract void method9();
\n public abstract void method10();
\n}<\/p>\n

[InterAdapter]<\/p>\n

package com.itheima.a09interfacedemo9;<\/p>\n

public abstract class InterAdapter implements Inter{<\/p>\n

@Override
\n public void method1() {<\/p>\n

}<\/p>\n

@Override
\n public void method2() {<\/p>\n

}<\/p>\n

@Override
\n public void method3() {<\/p>\n

}<\/p>\n

@Override
\n public void method4() {<\/p>\n

}<\/p>\n

@Override
\n public void method5() {<\/p>\n

}<\/p>\n

@Override
\n public void method6() {<\/p>\n

}<\/p>\n

@Override
\n public void method7() {<\/p>\n

}<\/p>\n

@Override
\n public void method8() {<\/p>\n

}<\/p>\n

@Override
\n public void method9() {<\/p>\n

}<\/p>\n

@Override
\n public void method10() {<\/p>\n

}
\n}<\/p>\n

[InterImp]<\/p>\n

package com.itheima.a09interfacedemo9;<\/p>\n

public class InterImp extends InterAdapter{<\/p>\n

\/\/\u9700\u8981\u7528\u5230\u54ea\u4e2a\u65b9\u6cd5，\u5c31\u91cd\u5199\u54ea\u4e2a\u65b9\u6cd5
\n @Override
\n public void method5(){
\n System.out.println("\u53ea\u8981\u7528method5");
\n }<\/p>\n

}<\/p>\n

\u603b\u7ed3<\/h4>\n

\"\"<\/p>\n<\/p>\n

\u521d\u8bc6\u5185\u90e8\u7c7b<\/h2>\n

\u4ec0\u4e48\u662f\u5185\u90e8\u7c7b？<\/h3>\n

\"\"<\/p>\n<\/p>\n

\u4e3a\u4ec0\u4e48\u8981\u5b66\u4e60\u5185\u90e8\u7c7b？<\/h3>\n

\u4f8b\u5982：<\/p>\n

\"\"<\/p>\n

（\u6e90\u4ee3\u7801）<\/p>\n

\"\"<\/p>\n

[Car]<\/p>\n

package com.itheima.a01interclass1;<\/p>\n

public class Car {
\n String carName;
\n int carAge;
\n String carColor;<\/p>\n

public void show(Car this){
\n \/\/\u662f\u6253\u5370\u8c03\u7528\u8005\u8f66\u7684\u540d\u5b57
\n System.out.println(this.carName);
\n Engine e = new Engine();
\n System.out.println(e.engineName);
\n }<\/p>\n

class Engine{
\n String engineName;
\n int engineAge;<\/p>\n

public void show(){
\n System.out.println(engineName);
\n System.out.println(carName);
\n }
\n }<\/p>\n

}<\/p>\n

[Test]<\/p>\n

package com.itheima.a01interclass1;<\/p>\n

public class Test {
\n public static void main(String[] args) {<\/p>\n

Car c = new Car();
\n c.carName = "\u51ef\u8fea\u62c9\u514b";
\n c.carAge = 1;
\n c.carColor = "\u9ed1";<\/p>\n

c.show();
\n }
\n}<\/p>\n

(\u8fd0\u884c\u7ed3\u679c\u622a\u56fe)<\/p>\n

\"\"<\/p>\n<\/p>\n

\u603b\u7ed3<\/h4>\n

\"\"<\/p>\n<\/p>\n

\u5185\u90e8\u7c7b\u7684\u5206\u7c7b<\/h2>\n

\"\"<\/p>\n<\/p>\n

\u6210\u5458\u5185\u90e8\u7c7b<\/h3>\n

\u6210\u5458\u5185\u90e8\u7c7b\u7684\u4ee3\u7801\u5982\u4f55\u4e66\u5199<\/h4>\n

\"\"<\/p>\n<\/p>\n

\u5982\u4f55\u521b\u5efa\u6210\u5458\u5185\u90e8\u7c7b\u7684\u5bf9\u8c61<\/h4>\n

\"\"<\/p>\n

\u65b9\u5f0f\u4e00：<\/h5>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u5728\u5916\u90e8\u7c7b\u4e2d\u7f16\u5199\u65b9\u6cd5，\u5bf9\u5916\u63d0\u4f9b\u5185\u90e8\u7c7b\u7684\u5bf9\u8c61（private）<\/p>\n

\u4f8b\u5982：<\/p>\n

\"\"<\/p>\n

（\u6e90\u4ee3\u7801）<\/p>\n

[Outer]<\/p>\n

package com.itheima.a02interclassdemo2;<\/p>\n

public class Outer {
\n String name;<\/p>\n

private class Inner{<\/p>\n

}<\/p>\n

public Inner getInstance(){
\n return new Inner();
\n }
\n}<\/p>\n

[Test]<\/p>\n

package com.itheima.a02interclassdemo2;<\/p>\n

public class Test {
\n public static void main(String[] args) {<\/p>\n

Outer o = new Outer();
\n System.out.println(o.getInstance());<\/p>\n

}
\n}<\/p>\n

\u65b9\u5f0f\u4e8c：<\/h5>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u76f4\u63a5\u521b\u5efa\u683c\u5f0f：\u5916\u90e8\u7c7b\u540d.\u5185\u90e8\u7c7b\u540d \u5bf9\u8c61\u540d = \u5916\u90e8\u7c7b\u5bf9\u8c61.\u5185\u90e8\u7c7b\u5bf9\u8c61;<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 Outer.Inner oi = new Outer().new Inner();<\/p>\n

\u4f8b\u5982：<\/p>\n

\"\"<\/p>\n

（\u6e90\u4ee3\u7801）<\/p>\n

[Outer]<\/p>\n

package com.itheima.a03interclassdemo3;<\/p>\n

public class Outer {
\n String name;<\/p>\n

public class Inner{<\/p>\n

}<\/p>\n

}<\/p>\n

[Test]<\/p>\n

package com.itheima.a03interclassdemo3;<\/p>\n

public class Test {
\n public static void main(String[] args) {<\/p>\n

Outer.Inner oi = new Outer().new Inner();<\/p>\n

}
\n}<\/p>\n

\u6210\u5458\u5185\u90e8\u7c7b\u5982\u4f55\u83b7\u53d6\u6210\u5458\u5916\u90e8\u7c7b\u7684\u6210\u5458\u53d8\u91cf<\/h4>\n

\u7ec3\u4e60：\u6210\u5458\u5185\u90e8\u7c7b-\u9762\u8bd5\u9898<\/p>\n

\"\"<\/p>\n

（\u6e90\u4ee3\u7801）<\/p>\n

\"\"<\/p>\n

[Outer]<\/p>\n

package com.itheima.a04interclassdemo4;<\/p>\n

public class Outer {
\n private int a = 10;<\/p>\n

class Inner{
\n private int a = 20;<\/p>\n

public void show(){
\n int a = 30;
\n System.out.println(Outer.this.a);\/\/10
\n System.out.println(this.a);\/\/20
\n System.out.println(a);\/\/30<\/p>\n

}<\/p>\n

}<\/p>\n

}<\/p>\n

[Test]<\/p>\n

package com.itheima.a04interclassdemo4;<\/p>\n

public class Test {
\n public static void main(String[] args) {
\n \/\/\u521b\u5efa\u5185\u90e8\u7c7b\u7684\u5bf9\u8c61，\u5e76\u8c03\u7528show()\u65b9\u6cd5
\n Outer.Inner oi = new Outer().new Inner();
\n oi.show();<\/p>\n

}
\n}<\/p>\n

(\u8fd0\u884c\u7ed3\u679c\u622a\u56fe)<\/p>\n

\"\"<\/p>\n<\/p>\n

\u5185\u90e8\u7c7b\u7684\u5185\u5b58\u56fe<\/h4>\n

（\u7b2c\u4e00\u6b65）<\/p>\n

\"\"<\/p>\n

（\u7b2c\u4e8c\u6b65）<\/p>\n

\"\"<\/p>\n<\/p>\n

\u603b\u7ed3<\/h4>\n

\"\"<\/p>\n<\/p>\n

\u9759\u6001\u5185\u90e8\u7c7b<\/h3>\n

\u4ec0\u4e48\u662f\u9759\u6001\u5185\u90e8\u7c7b？<\/h4>\n

\"\"<\/p>\n

\u4f8b\u5982：<\/p>\n

（\u6e90\u4ee3\u7801）<\/p>\n

\"\"<\/p>\n

[Outer]<\/p>\n

package com.itheima.a05interclassdemo5;<\/p>\n

public class Outer {<\/p>\n

\/\/\u9759\u6001\u5185\u90e8\u7c7b
\n static class Inner{
\n public void show1(){
\n System.out.println("\u975e\u9759\u6001\u65b9\u6cd5\u88ab\u8c03\u7528\u4e86");
\n }
\n public static void show2(){
\n System.out.println("\u9759\u6001\u65b9\u6cd5\u88ab\u8c03\u7528\u4e86");
\n }<\/p>\n

}
\n}<\/p>\n

[Test]<\/p>\n

package com.itheima.a05interclassdemo5;<\/p>\n

public class Test {
\n public static void main(String[] args) {<\/p>\n

Outer.Inner oi = new Outer.Inner();
\n oi.show1();<\/p>\n

Outer.Inner.show2();<\/p>\n

}
\n}<\/p>\n

(\u8fd0\u884c\u7ed3\u679c\u622a\u56fe)<\/p>\n

\"\"<\/p>\n<\/p>\n

\u603b\u7ed3<\/h4>\n

\"\"<\/p>\n<\/p>\n

\u5c40\u90e8\u5185\u90e8\u7c7b<\/h3>\n

\u4ec0\u4e48\u662f\u5c40\u90e8\u5185\u90e8\u7c7b？<\/h4>\n

\"\"<\/p>\n

\u4f8b\u5982：<\/p>\n

（\u6e90\u4ee3\u7801）<\/p>\n

\"\"<\/p>\n

[Outer]<\/p>\n

package com.itheima.a06interclassdemo6;<\/p>\n

public class Outer {
\n int b = 20;
\n public void show(){
\n int a = 10;
\n \/\/\u5c40\u90e8\u5185\u90e8\u7c7b
\n class Inner{
\n String name;
\n int age;<\/p>\n

public void method1(){
\n System.out.println(a);
\n System.out.println(b);
\n System.out.println("\u5c40\u90e8\u5185\u90e8\u7c7b\u4e2d\u7684method1\u65b9\u6cd5");
\n }<\/p>\n

public static void method2(){
\n System.out.println("\u5c40\u90e8\u5185\u90e8\u7c7b\u4e2d\u7684method2\u65b9\u6cd5");
\n }<\/p>\n

}
\n Inner i = new Inner();
\n System.out.println(i.name);
\n System.out.println(i.age);
\n i.method1();
\n Inner.method2();
\n }<\/p>\n

}<\/p>\n

[Test]<\/p>\n

package com.itheima.a06interclassdemo6;<\/p>\n

public class Test {
\n public static void main(String[] args) {<\/p>\n

Outer o = new Outer();
\n o.show();<\/p>\n

}
\n}<\/p>\n

(\u8fd0\u884c\u7ed3\u679c\u622a\u56fe)<\/p>\n

\"\"<\/p>\n<\/p>\n

\u533f\u540d\u5185\u90e8\u7c7b<\/h3>\n

\u4ec0\u4e48\u662f\u533f\u540d\u5185\u90e8\u7c7b？<\/h4>\n

\"\"<\/p>\n

\u6ce8：<\/span>\u4e0a\u9762\u56fe\u7247\u4e2d\u7ea2\u6846\u5185\u7684\u4ee3\u7801\u6700\u540e\u7f3a\u5c11\u4e00\u4e2a ;<\/p>\n<\/p>\n

\u4f8b1:（\u63a5\u53e3-\u5b9e\u73b0\u5173\u7cfb）<\/h4>\n

（\u5206\u6790）<\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

(\u6e90\u4ee3\u7801)<\/p>\n

\"\"<\/p>\n

[Swim](\u63a5\u53e3interface)<\/p>\n

package com.itheima.a07interclassdemo7;<\/p>\n

public interface Swim {
\n public abstract void swim();
\n}<\/p>\n

[Test]<\/p>\n

package com.itheima.a07interclassdemo7;<\/p>\n

public class Test {
\n public static void main(String[] args) {<\/p>\n

\/\/\u7f16\u5199\u533f\u540d\u5185\u90e8\u7c7b\u7684\u65b9\u6cd5
\n new Swim(){
\n @Override
\n public void swim() {
\n System.out.println("\u91cd\u5199swim\u65b9\u6cd5");
\n }
\n };<\/p>\n

}
\n}<\/p>\n

\u4f8b2：（\u7c7b-\u7ee7\u627f\u5173\u7cfb）<\/h4>\n

（\u5206\u6790）<\/p>\n

\"\"<\/p>\n

（\u6e90\u4ee3\u7801）<\/p>\n

\"\"<\/p>\n

[Animal]<\/p>\n

package com.itheima.a07interclassdemo7;<\/p>\n

public abstract class Animal {
\n public abstract void eat();
\n}<\/p>\n

[Test2]<\/p>\n

package com.itheima.a07interclassdemo7;<\/p>\n

public class Test2 {
\n public static void main(String[] args) {<\/p>\n

new Animal(){
\n @Override
\n public void eat() {
\n System.out.println("\u91cd\u5199eat\u65b9\u6cd5");
\n }
\n };<\/p>\n

}
\n}<\/p>\n

\u4f8b\u5982：（\u5176\u4ed6）<\/h4>\n

（\u6e90\u4ee3\u7801）<\/p>\n

[Swim]<\/p>\n

package com.itheima.a07interclassdemo7;<\/p>\n

public interface Swim {
\n public abstract void swim();
\n}<\/p>\n

[Test3]<\/p>\n

package com.itheima.a07interclassdemo7;<\/p>\n

public class Test3 {
\n public static void main(String[] args) {<\/p>\n

\/\/\u6574\u4f53\u6211\u4eec\u53ef\u4ee5\u7406\u89e3\u4e3aSwim\u63a5\u53e3\u7684\u5b9e\u73b0\u7c7b\u5bf9\u8c61
\n \/\/\u63a5\u53e3\u591a\u6001
\n Swim s = new Swim() {<\/p>\n

@Override
\n public void swim() {
\n System.out.println("\u91cd\u5199swim\u65b9\u6cd5");
\n }<\/p>\n

};
\n \/\/\u7f16\u8bd1\u770b\u5de6\u8fb9，\u8fd0\u884c\u770b\u53f3\u8fb9
\n s.swim();<\/p>\n

new Swim() {<\/p>\n

@Override
\n public void swim() {
\n System.out.println("\u91cd\u5199swim\u65b9\u6cd5");
\n }<\/p>\n

}.swim();<\/p>\n

}
\n}<\/p>\n

(\u8fd0\u884c\u7ed3\u679c\u622a\u56fe)<\/p>\n

\"\"<\/p>\n<\/p>\n

\u603b\u7ed3<\/h4>\n

\"\"<\/p>\n<\/p>\n<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"

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