Java引用传递的一个例子

class Candy{
private Integer i;
public void setI(Integer i) {
this.i = i;
}
public Integer getI() {
return i;
}
public static void main(String[] args) {
Map<String,Object> map=new HashMap<String,Object>();
Candy[] array=new Candy[1];
Candy cd=new Candy();
cd.setI(0);
map.put("i", cd);
array[0]=cd;
array[0].setI(5);
System.out.println("map:"+((Candy)map.get("i")).getI());
System.out.println("array:"+array[0].getI());

}
}
//output
//map:5
//array:5