编程创建Student类为其定义成员变量有姓名name、学号StuNo、年龄age 性别sex;成员方法——learn定义听课的方法在控制台直接输出具有的功能是能够输出name+正在认真听课 doHomework方法功能返回其现在是北京时间：+hour+点+name+正在写作业具体步骤如下。1在chapter05包中创建类Student 在类体中定义成员变量String stuID;String

代码如下：

//Student类 package chapter05;

public class Student { String stuID; String name; int age; String sex;

public void learn() {
    System.out.println(name + "正在认真听课");
}

public String doHomework(int hour) {
    return "现在是北京时间：" + hour + "点，" + name + "正在写作业";
}

}

//StudentTest类 package chapter05;

public class StudentTest { public static void main(String[] args) { Student student1 = new Student(); student1.learn(); System.out.println(student1.doHomework(22));

    student1.stuID = "001";
    student1.name = "张三";
    student1.age = 18;
    student1.sex = "男";
    System.out.println("姓名：" + student1.name);
    System.out.println("学号：" + student1.stuID);
    System.out.println("年龄：" + student1.age);
    System.out.println("性别：" + student1.sex);
}

}