第七周学习总结
(二)接口的细节
(三)练习
1 public class Person {
2 private String name;
3 private int age;
4 publicPerson()
5 public Person(String name,int age) {
6 this.name = name;
7 this.age = age;
8 }
9 public String gethane{
10 return name;
11 }
12 public void setName(String name)
13 {this.name = name;}
14 public int getAge(){
15 return age;
16 }
17 public void setAge(int age){
18 this.age = age;
19 }
20 }
1 public abstract class extends Person{
2
3 public Coach(){
4 }
5 public Coach(String name, int age) {
6 super(name, age);
7 }
8 public abstract void teach();
9 }
10
11 public abstract class extends Person{
12 public Sporter(){
13 }
14 public Sporter(String name, int age) {
15 super(name, age);
16 }
17 public abstract void study();
18 }
19 }
public interface English {
public abstract void speakEnglish();
}
public class PingPangSporter extends Sporter implements English{
public PingPangsporter() {
}
publicPingPangSporter(String name, int age){
super(name, age);
}
@Override
public void speakEnglish() {
System.out.println("乒乓球运动员在说亮语")；
}
@Override
public void study() {
System.out.println(乒乓球运动员在学习如何打乒乓球”)；
}
}
public class BasketballSporter extends Sporter{
publicBasketbaliSporter(){
}
public BasketballSporter(String name, int age) {
super(name, age);
}
@Ovarnide
public void study(）{
system.out.orintln("篮球运动员在学习如何打篮球”)；
}
}
1 public class Pingpangcoach extends Coach implements English{
2 public PingPangCoach(){
3 }
4 public PingpangCoach(String name, int age) {
5 super(name, age);
6 }
7
8 public void teach() {
9 System.out.print1n(“乒乓球教练正在教如何打乒乓球")；
10 }
11 @Override
12 public void speakEnglish
13 System.out.println(乒乓球教练在学习说英语")；
14 }
15 }
16
17 public class Basketballcoach extends Coach{
18 public BasketballCoach( ){
19 }
20 public BasketballCoach(String name, int age) {
21 super(name, age);
22 }
23 @Override
24 public void teach(){
25 System.out.println("篮球教练正在教如何打篮球”)；
26 }
27 }
28 public classTest
29 public static vold main(Stringt args){
30 }
31 PingPangSporter pps = new PingPangSporter( name:"刘诗雯”，age:23);
32 System.out.println( pps.getAge());
33 pps.study();
34 pps.speakEnglish();
35 }
36 }
三、内部类
(一)初识
1 public class Car {
2 String carName;
3 int carAge;
4 String carColor;
5
6 class Engine{
7 String engineName;
8 int engineAge;
9
10 }
11 }
(二)成员内部类
1 public class Outer {
2 private int a = 10;
3
4 class Inner {
5 private int a = 20;
6
7 public void show() {
8
9 int a = 30;
10 System.out.println( Outer.this.a); // 10
11 System.out.println( this.a); // 20
12 System.out.println( a); // 30
13 }
14 }
15 }
(三)静态,局部内部类
1 public class Outer {
2 int a=10;
3 static int b=20;
4
5 static class Inner {
6 public void show() {
7
8 Outer o = new Outer();
9 System.out.println( O.a);
10 System.out.println( b);
11 }
12 }
(四)匿名内部类
1 public class Test{
2 public static void main(String[] args) {
3
4 Dog d = new Dog();
5 method(d);
6
7 method(
8 new Animal() {
9 @Override
10 public void eat(){
11 System.out.println("狗吃骨头");
12 }
13 }
14 );
15 }
16 public static void method(Animal a){
17 a.eat();
18 }
19 }
下周学习:项目,界面
