Java基础-学习笔记（八）——函数的参数传递

 1 class PassValue
 2 {
 3     
 4     public static void main(String [] args)
 5     {
 6         int x=5;
 7         change(x);
 8         System.out.println("the current value is "+x);
 9     }
10     public static void change(int x)
11     {
12         x=3;
13     }
14 }
15 /*
16 F:\java_example>java PassValue
17 the current value is 5
18 */

class PassValue
{
    int x;
    public static void main(String [] args)
    {
        PassValue obj = new PassValue();
        obj.x=5;
        change(obj);
        System.out.println("the current value is "+obj.x);
    }
    public static void change(PassValue obj)
    {
        obj.x=3;
    }
}
/*
F:\java_example>java PassValue
the current value is 3
*/