By GokiSoft.com| 15:42 17/07/2023|
Java Advanced

MultiThread - Sinh số ngẫu nhiên và hiển thị bình phương số ngẫu nhiên & Synchronized trong Java BT1101

Viết chương trình làm task vu như sau

- Thread thứ nhất thực hiện sinh ngẫu nhiên các số tự nhiêu từ 1 tới 20 - Dừng 2s và chạy vô tận

- Thread thứ 2 thực hiện hiển thị bình phương các số được sinh ra từ Thread 1- Dừng 1s và chạy vô tận

- Thực hiện đồng bộ 2 Thread trên (T1 thực hiện sinh ngẫu nhiên > T2 in ra bình phương > T1 tiếp tục sinh > T2 in ra bình phương > ...)

Liên kết rút gọn:

https://gokisoft.com/1101

Bình luận

avatar
Lê Sỹ Khai [community,C2009G]
2021-09-11 04:50:11


#Main.java


/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package thread;

/**
 *
 * @author LE KHAI
 */
public class Main {
    public static void main(String[] args) {
        ShareData shareData =new ShareData();
        
        ThreadOne t1 = new ThreadOne(shareData);
        ThreadTwo t2 = new ThreadTwo(shareData);
        
        t1.start();
        t2.start();
    }
}


#ShareData.java


/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package thread;

/**
 *
 * @author LE KHAI
 */
public class ShareData {
    int rad;

    public ShareData() {
    }

    
    public int getRad() {
        return rad;
    }

    public void setRad(int rad) {
        this.rad = rad;
    }
    
    
}


#ThreadOne.java


/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package thread;

import java.util.Random;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author LE KHAI
 */
public class ThreadOne extends Thread{
    ShareData shareData;

    public ThreadOne(ShareData shareData) {
        this.shareData = shareData;
    }
   
    @Override
    public void run() {
        try {
            Thread.sleep(2000);
        } catch (InterruptedException ex) {
            Logger.getLogger(ThreadOne.class.getName()).log(Level.SEVERE, null, ex);
        }
        Random random = new Random();
        
        for (int i = 0; ; i++) {
            synchronized(shareData){
            int rad = random.nextInt(20);
            shareData.setRad(rad);
            System.out.println(rad);  
            
            shareData.notifyAll();
                try {
                    shareData.wait();
                } catch (InterruptedException ex) {
                    Logger.getLogger(ThreadOne.class.getName()).log(Level.SEVERE, null, ex);
                }
            }           
        }
    }
    
}


#ThreadTwo.java


/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package thread;

import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author LE KHAI
 */
public class ThreadTwo extends Thread{
    ShareData shareData;

    public ThreadTwo(ShareData shareData) {
        this.shareData = shareData;
    }

    @Override 
    public void run() {
        for (int i = 0; ; i++) {
            synchronized(shareData){
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException ex) {
                    Logger.getLogger(ThreadTwo.class.getName()).log(Level.SEVERE, null, ex);
                }
                shareData.notifyAll();
                try {
                    shareData.wait();
                } catch (InterruptedException ex) {
                    Logger.getLogger(ThreadTwo.class.getName()).log(Level.SEVERE, null, ex);
                }
                
                int rad = shareData.getRad();
                System.out.println("BP: " +rad*rad);
            }
        }
        
    }
    
}


avatar
Nguyễn Hùng Anh [community,C2009G]
2021-09-11 03:51:28


#Main.java


public class Main {
    public static void main(String [] args) {
        SharedData sharedData = new SharedData();

        ThreadOne t1 = new ThreadOne(sharedData);
        ThreadTwo t2 = new ThreadTwo(sharedData);

        t1.start();
        t2.start();
    }
}


#SharedData.java


public class SharedData {
    int rad;

    public int getRad() {
        return rad;
    }

    public void setRad(int rad) {
        this.rad = rad;
    }
}


#ThreadOne.java


import java.util.Random;

public class ThreadOne extends Thread{
    SharedData sharedData;

    public ThreadOne(SharedData sharedData) {
        this.sharedData = sharedData;
    }

    @Override
    public void run() {
        Random random = new Random();

        do {
            synchronized (sharedData) {
                int rad =random.nextInt(20);
                if (rad == 0) {
                    continue;
                }
                System.out.println(rad);
                sharedData.setRad(rad);

                sharedData.notifyAll();
                try {
                    sharedData.wait(2000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        } while (sharedData.getRad() != 21);

        synchronized (sharedData) {
            sharedData.notifyAll();
        }

    }
}


#ThreadTwo.java


public class ThreadTwo extends Thread{
    SharedData sharedData = new SharedData();

    public ThreadTwo(SharedData sharedData) {
        this.sharedData = sharedData;
    }

    @Override
    public void run() {
        do {
            synchronized (sharedData) {
                sharedData.notifyAll();
                try {
                    sharedData.wait(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }

                int rad = sharedData.getRad();
                System.out.println("BP: " + rad*rad);
            }
        } while (sharedData.getRad() != 21);

        synchronized (sharedData) {
            sharedData.notifyAll();
        }
    }
}


avatar
Hieu Ngo [community,C2009G]
2021-09-11 03:32:29


#Main.java


public class Main {
    public static void main(String [] args){
        ShareData shareData = new ShareData();
        ThreadOne t1 = new ThreadOne(shareData);
        ThreadTwo t2 = new ThreadTwo(shareData);

        t1.start();
        t2.start();

    }
}


#ShareData.java


public class ShareData {
    int rad;

    public ShareData() {

    }
    public ShareData(int rad) {
        this.rad = rad;
    }

    public int getRad() {
        return rad;
    }

    public void setRad(int rad) {
        this.rad = rad;
    }

}


#ThreadOne.java


import java.util.Random;

public class ThreadOne extends Thread{
    ShareData shareData;

    public ThreadOne(ShareData shareData) {
        this.shareData = shareData;
    }

    @Override
    public void run() {
        try {
            Thread.sleep(2000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        Random random = new Random();
        for(int i = 0;i < 10;i++) {
            synchronized (shareData) {
                int rad = random.nextInt(20);
                System.out.println("rad = " + rad);
                shareData.setRad(rad);
                shareData.notifyAll();
                try {
                    shareData.wait();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
        synchronized (shareData){
            shareData.notifyAll();
        }
    }
}


#ThreadTwo.java


public class ThreadTwo extends Thread{
    ShareData shareData;

    public ThreadTwo(ShareData shareData) {
        this.shareData = shareData;
    }

    @Override
    public void run() {
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        for(int i =0 ; i< 10;i++) {
            synchronized (shareData){
                shareData.notifyAll();
                try {
                    shareData.wait();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                int rad = shareData.getRad();
                System.out.println("BP =" + rad*rad);
            }
        }
        synchronized (shareData){
            shareData.notifyAll();
        }
    }
}


avatar
Đào Mạnh Dũng [C2010L]
2021-08-20 09:56:56



/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

package pkg1101;

import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author Đào Dũng
 */
public class Main {

    /**
     */
    public static void main(String[] args) {
       
        Ojb ojb = new Ojb();
        new Thread(() -> {
             
            while (true) {
            synchronized (ojb) {
                
                try {
                    ojb.notifyAll();
                    ojb.wait();
                    int rad = ojb.i;
                    ojb.i = rad * rad;
                    System.out.println("T2: " + ojb.i);
                    Thread.sleep(2000);
                } catch (InterruptedException ex) {
                    Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
                }
                 
            }
        }
       
        }).start();
        
        new Thread(() -> {
             
            for (;;) {
            synchronized (ojb) {
                ojb.i=(int) (20*Math.random())+1;
                System.out.println("T1: "+ojb.i);
                 
                try {
                    Thread.sleep(1000);
                    ojb.notifyAll();
                    ojb.wait();
                } catch (InterruptedException ex) {
                    Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
                }
                    
                 
            }
        }
        
        }).start();
        
    }

}



/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

package pkg1101;

/**
 *
 * @author Đào Dũng
 */
public class Ojb {
    public int i;
}


avatar
Triệu Văn Lăng [T2008A]
2021-03-19 08:12:09



/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package bai1101;

import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author MTLS
 */
public class Thread2 extends Thread {

    SharedData sd;

    public Thread2(SharedData sd) {
        this.sd = sd;
    }

    @Override
    public void run() {
        for (int i = 0; i < 10; i++) {
            synchronized (sd) {
                try {
                    sd.notifyAll();

                    sd.wait();
                } catch (InterruptedException ex) {
                    Logger.getLogger(Thread2.class.getName()).log(Level.SEVERE, null, ex);
                }
                int rnd = sd.getRd();
                rnd *= rnd;
                System.out.println("BP: " + rnd);
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException ex) {
                    Logger.getLogger(Thread2.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
            synchronized(sd) {
                sd.notifyAll();
            }
        }
    }

}


avatar
Triệu Văn Lăng [T2008A]
2021-03-19 08:11:51



/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package bai1101;

import java.util.Random;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author MTLS
 */
public class Thread1 extends Thread{
    
    SharedData sd;

    public Thread1(SharedData sd) {
        this.sd = sd;
    }

    @Override
    public void run() {
        try {
            Thread.sleep(100);
        } catch (InterruptedException ex) {
            Logger.getLogger(Thread1.class.getName()).log(Level.SEVERE, null, ex);
        }
        
        Random rd = new Random();
        
        for (int i = 0; i < 10; i++) {
            synchronized(sd) {
                int rnd = rd.nextInt(20);
                sd.setRd(rnd);
                
                System.out.println("rad: " + rnd); 
                try {
                    Thread.sleep(2000);
                } catch (InterruptedException ex) {
                    Logger.getLogger(Thread1.class.getName()).log(Level.SEVERE, null, ex);
                }
                sd.notifyAll();
                
                try {
                    sd.wait();
                } catch (InterruptedException ex) {
                    Logger.getLogger(Thread1.class.getName()).log(Level.SEVERE, null, ex);
                }
                
                    
            }
        }
    }
}



avatar
Triệu Văn Lăng [T2008A]
2021-03-19 08:11:22



/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package bai1101;

/**
 *
 * @author MTLS
 */
class SharedData {
    int c = 0;
    int rd;
    public synchronized void add(String threadName, int deltai) {
        System.out.println(threadName + "->" + c);
        c +=deltai;
        System.out.println(threadName + "->" + "c: " + c);
    }
    
    public synchronized void minus(String threadName, int deltai) {
        System.out.println(threadName + "->" + c);
        c -=deltai;
        System.out.println(threadName + "->" + "c: " + c);
    }

    public int getRd() {
        return rd;
    }

    public void setRd(int rd) {
        this.rd = rd;
    }

    

    

    
    
}


avatar
Triệu Văn Lăng [T2008A]
2021-03-19 08:11:03



/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package bai1101;

/**
 *
 * @author MTLS
 */
public class Main {
    public static void main(String[] args) {
        SharedData sd = new SharedData();
        
        Thread1 t1 = new Thread1(sd);
        Thread2 t2 = new Thread2(sd);
        
        t1.start();
        t2.start();
    }
}


avatar
vuong huu phu [T2008A]
2021-03-18 03:56:24



/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package javaapplication35;

/**
 *
 * @author Admin
 */
public class S_dt {
   int r ;

    public int getR() {
        return r;
    }

    public void setR(int r) {
        this.r = r;
    }
   
}


avatar
vuong huu phu [T2008A]
2021-03-18 03:56:02



/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package javaapplication35;

import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author Admin
 */
public class Thread2 extends Thread {

    S_dt s;

    public Thread2(S_dt s) {
        this.s = s;
    }

    @Override
    public void run() {
        for (int i = 0; i > -1; i++) {
synchronized(s){
            try {
                s.wait();
            } catch (InterruptedException ex) {
                Logger.getLogger(Thread2.class.getName()).log(Level.SEVERE, null, ex);
            }
            s.notifyAll();
            int n = s.getR();
            n *= n;
            System.out.println("T2 = " + n);
            try {
                    sleep(1000);
                } catch (InterruptedException ex) {
                    Logger.getLogger(Thread1.class.getName()).log(Level.SEVERE, null, ex);
                }
             
        }}
    }

}