interview20170914

package interview20170914;class Value{public int i = 15;}

package interview20170914;/** * Object Reference */public class TestValue{public void first(){int i = 5;Value v = new Value();                     //id=ZWF01v.i = 25;second(v, i);                              //id=ZWF01System.out.println(v.i + "&" + i + "\r\n");//id=ZWF01}public void second(Value v, int i)             //id=ZWF01{i = 0;v.i = 20;                                  //id=ZWF01Value val = new Value();//id=ZWF000007v = val;                                                //id=ZWF000007//v.i = val.i;                               //id=ZWF01System.out.println(v.i + "&" + i + "\r\n");             //id=ZWF000007}public static void main(String[] args){TestValue tv = new TestValue();tv.first();}}

别人的面试题，稍微看了下下。