1多态以及接口调用方法：
public class Interface {
public static void main(String[] args) {
Al x = new Al();
jian a = x;
System.out.println(a.sub(, ));
// 使用接口引用调用的方法
animal zz = new animal();
zz.jiao();
zz = new dog();
zz.jiao();
zz = new cat();
zz.jiao();
//多态
}
}
interface jia{
public int add(int x, int y);
}
interface jian{
public int sub(int x, int y);
}
interface cheng{
public int mul(int x, int y);
}
interface chu{
public int del(int x, int y);
}
class Al implements jia,jian,cheng,chu{
public int sub(int x, int y){
return x - y;
}
public int add(int x, int y){
return x + y;
}
public int mul(int x, int y){
return x * y;
}
public int del(int x, int y){
return x / y;
}
}
class animal{
public void jiao(){
System.out.println("我是animal");
}
}
class dog extends animal{
public void jiao(){
System.out.println("汪汪");
}
}
class cat extends animal{
public void jiao(){
System.out.println("喵喵");
}
}
2.匿名内部类练习：
public class 匿名内部类 {
public void drink(Beverages drink){
System.out.println("运动员在饮用" + drink);
}
public static void main(String[] args) {
DustMan dm = new DustMan();
dm.cleanWithBroom();
dm.cleanWithDustCollector();
匿名内部类 sp = new 匿名内部类();
sp.drink(new Beverages("橙汁"){
public void addsomething(){
System.out.println("橙汁老司机开车了");
}
});
sp.drink(new Beverages("可乐"){
public void addsomething(){
System.out.println("可乐老司机开车了");
}
});
sp.drink(new Beverages("雪碧"){
public void addsomething(){
System.out.println("雪碧老司机开车了");
}
});
sp.drink(new Beverages("芬达"){
public void addsomething(){
System.out.println("芬达老司机开车了");
}
});
sp.drink(new Beverages("绿茶"){
public void addsomething(){
System.out.println("绿茶妹妹开车了");
}
});
}
}
class DustMan{
public void cleanWithBroom(){
Utility util = new Utility(){
public void clean(){
System.out.println("正在清洁卫生。。。");
}
};
util.clean();//调用前面的方法；
}
public void cleanWithDustCollector(){
ElectronicUtil util = new ElectronicUtil(){
public void clean(){
System.out.println("正在用吸尘器清洁卫生。。。");
}
};
util.clean();//调用前面的方法；
}
}
interface Utility{
public void clean();
}
class ElectronicUtil{
public void clean(){
System.out.println("使用电子设备清洁卫生....");
}
}
class Beverages{
private String juiceName;
public Beverages(String name){
this.juiceName = name;
}
public String toString(){
return juiceName;
}
}