java习题 chp12_15 *（多线程）完成下列程序要求有个Student 类，代码如下：

 

 

文章目录

• Student.java
• Teacher.java
• TeacherImpl.java
• MyThread.java
• Test.java

15. **（多线程）完成下列程序要求有个Student 类，代码如下：

 

class Student{
	String name;
	int age;
	//构造方法和get/set 方法请自行补充完成„
	//学生问老师问题
	public void ask(Teacher t){
		t.answer(this);//调用老师的answer 方法
		}
	public void study(){
		System.out.println(name + “study”);
		}
	public void doHomework(){
		System.out.println(name + “do homework”);
		}
}

定义Teacher 接口

interface Teacher{
	void answer(Student stu);
}

给出一个Teacher 接口的实现类。该实现类实现answer 方法的时候，要求每次学生调用老师的answer 方法时，都创建一个新线程，该线程调用学生的学习方法和做作业方法。

Student.java

package chp12_15;

public class Student {
	String name;
	int age;
	//构造方法
	public Student(String name, int age) {
		super();
		this.name = name;
		this.age = age;
	}
	public Student() {
		super();
		// TODO Auto-generated constructor stub
	}
	//get|set方法
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	//学生问老师问题
	public void ask(Teacher t){
		t.answer(this);
	}
	public void study(){
		System.out.println(name+"  study");
	}
	public void doHomework(){
		System.out.println(name+" do homework");
	}
}

Teacher.java

package chp12_15;

public interface Teacher {
	void answer(Student stu);

}

TeacherImpl.java

package chp12_15;

public class TeacherImpl implements Teacher{
	MyThread mythread ;
	
	public TeacherImpl() {
		super();
	}

	@Override
	public void answer(Student stu) {
		// TODO Auto-generated method stub
		mythread = new MyThread(stu);
		mythread.start();
	}
}

MyThread.java

package chp12_15;

public class MyThread extends Thread{
	private Student student;
	
	public MyThread(Student student) {
		// TODO Auto-generated constructor stub
		this.student=student;
	}
	@Override
	public void run() {
		// TODO Auto-generated method stub
		super.run();
		student.study();
		student.doHomework();
	}
}

Test.java

package chp12_15;

public class Test {
	public static void main(String[] args) {
		Teacher t = new TeacherImpl();
		Student s = new Student("abc",20);
		s.ask(t);
	}
}