group3.java.bak

这是java实例的书上例题

public class Group3
{
    private static int count;        //静态变量Group3.count统计班级数量
    private String name;             //实例变量Group3.name 表示班级名称
    public class Student
    {
        private int count;           //实例变量Student.count表示学号
        private String name;         //实例变量Student.name表示学生姓名
        public void output(int count)
        {
            count++;                    //存取方法的参数，局部变量
            this.count++;               //通过对象存取Student.count
            Group3.count++;             //通过类名存取Group3.count
            Group3.this.count++;             //通过类名存取Group3.count
            System.out.println(count+" "+this.count+" "+Group3.count+" "+Group3.this.count++);
        }
    }
    public Student aStu()               //返回内部类Student的一个对象
    {
        return  new Student();
    }
    public static void main (String args[])
    {
        Group3 g3 = new Group3();
        g3.count=10;                    //Group3.count
        Group3.Student s1 = g3.aStu();  //在外部创建内部类的对象
                                        //完整的内部类标识Group3.Student
        s1.output(5);
    }
}