Scanner在控制臺輸入內容

package com.Fruit;

public interface Fruit {//提供接口

}

package com.Fruit;

public class Apple implements Fruit{
public Apple(){
System.out.println("創建了一個蘋果");
}
}

public class Oranges implements Fruit{
public Oranges(){
System.out.println("創建了一個橘子");
}
}

public class Pear implements Fruit{
public Pear(){
System.out.println("創建了一個梨");
}
}

package com.Fruit;

import java.util.Scanner;

public class Gardener {
public void creater(){
String s="";
Scanner in=new Scanner(System.in);
s=in.nextLine();
if(s.equals("蘋果")){
new Apple();
}else if(s.equals("梨")){
new Pear();
}else if(s.equals("橘子")){
new Oranges();
}else{
System.out.println("創建不出來了");
}
}
}

package com.Fruit;
public class FruitTest {
public static void main(String[] args) {
// TODO Auto-generated method stub
new Gardener().creater();
}
}

JAVA基礎篇—接口實現動態創建對象