class Man
{
    public int i = 50;
    public int XX()
    {
        i = i * i;
        return i;
    }
    public void show()
    {
        System.out.printf("%d", i);
    }
}
class Son extends Man
{
}
class B
{
    public static void main(String [ ]args )
    {
        Son a1 = new Son();
        a1.show();
    }
}



请教各位大神....为什么这里我输出以后....i的值还是50...而不是2500.....我定义了XX的方法没有起作用么?

class Man
{
    public int i = 50;
    public int XX()
    {
        i = i * i;
        return i;
    }
    public void show()
    {
        System.out.printf("%d", XX());
    }
}
class Son extends Man
{
}
public class B
{
    public static void main(String [ ]args )
    {
        Son a1 = new Son();
        a1.show();
    }
}

然而你并没有调用XX方法