8052408dbda4001d1cab991f56a0b283

来自「Android平台对应的高欢堂所编写的书籍的对应源代码 可以不用敲键盘了」· 代码 · 共 36 行

import java.util.HashMap;
import java.util.Map;
import java.util.Vector;


class Number<T> {   
	  private T value;   
	  
	  Number(T v) {
		  value = v;
	  }
    public T Value() {
        return value; 
    }
 }


public class ccc {
	public static void main(String[] args) {
	   Vector<Double> v = new Vector<Double>();
	   v.add(34.56);
	   v.add(88.25);
	   v.add(886.5);
	   System.out.println(v.get(0));
	   System.out.println(v.get(2));
	   //-----------------------------------------
	   Map<String, Object> item = new HashMap<String, Object>();
	   item.put("a1", new Number<Integer>(201));
	   item.put("b1", new Number<Integer>(202));
	   item.put("c1", new Number<Integer>(203));
       System.out.println(item.get("a1").toString());
	   
	}

}