[Share Code] Tìm hiểu Thread trong Java, MultiThreading trong Java, Lập trình Java

#Phần 1: Tìm hiểu Thread

##Main.java

/*
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package lession5;

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

/**
 *
 * @author Diep.Tran
 */
public class Main {
    public static void main(String[] args) {
        //Main Thread => Luong dau tien
        System.out.println("Main Thread Start");
        //Khong su dung Thread
//        noUsingThread();
        
        //Su dung Thread
        //Cach 1
        //Khoi tao Thread
        Thread t1 = new Thread(new Runnable() {
            @Override
            public void run() {
                //bat dau Thread chay
                for (int i = 0; i < 10; i++) {
                    System.out.println("Thread 1 > " + i);
                    try {
                        //Khi đặt lệnh Thread.sleep() vào lường nào => thì luồng đó sẽ bị delay.
                        Thread.sleep(1000);
                    } catch (InterruptedException ex) {
                        Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
                    }
                }
            }
        });
        //Thread chay
        
        //Khoi tao Thread
        Thread1 t2 = new Thread1();
        //Thread chay
        
//        Thread2 t3 = new Thread2();
//        t3.start();
        
        t1.start();
        try {
            t1.join();
        } catch (InterruptedException ex) {
            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
        }
//        t1.stop();
        //Thread 1 đã die => không thể start lại được
//        t1.start();//câu lẹnh này sẽ bị lỗi
        t2.start();
        
        System.out.println("Main Thread Ends");
    }
    
    static void noUsingThread() {
        for (int i = 0; i < 10; i++) {
            System.out.println("Thread 1 > " + i);
        }
        
        for (int i = 0; i < 10; i++) {
            System.out.println("Thread 2 > " + i);
        }
    }
}

#Phần 2: Các cách tạo Thread trong Java

##Test.java

/*
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 */
package lession5;

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

/**
 *
 * @author Diep.Tran
 */
public class Test {
    /**
     * Tim hieu join() trong Thread
     * @param args 
     */
    public static void main(String[] args) {
        Thread t1 = new Thread(new Runnable() {
            @Override
            public void run() {
                for (int i = 0; i < 10; i++) {
                    System.out.println("T1 > " + i);
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException ex) {
                        Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex);
                    }
                }
            }
        });
        
        Thread t2 = new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    t1.join();
                } catch (InterruptedException ex) {
                    Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex);
                }
                for (int i = 0; i < 10; i++) {
                    System.out.println("T2 > " + i);
                    
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException ex) {
                        Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex);
                    }
                }
            }
        });
        
        t1.start();
        
//        try {
//            t1.join();
//        } catch (InterruptedException ex) {
//            Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex);
//        }
        
        t2.start();
        
        System.out.println("End Thread Main");
    }
}

##Thread1.java

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package lession5;

/**
 *
 * @author Diep.Tran
 */
public class Thread1 extends Thread{

    @Override
    public void run() {
        for (int i = 0; i < 10; i++) {
            System.out.println("Thread 2 > " + i);
        }
    }
    
}

##Thread2.java

/*
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package lession5;

/**
 *
 * @author Diep.Tran
 */
public class Thread2 implements Runnable{
    public Thread t;
    
    public Thread2() {
        t = new Thread(this);
    }
    
    @Override
    public void run() {
        for (int i = 0; i < 10; i++) {
            System.out.println("T3 > " + i);
        }
    }
    
    public void start() {
        t.start();
    }
}

#Phần 3: Tìm hiểu đồng bộ Thread trong Java

##SharedData.java

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package lession5;

/**
 *
 * @author Diep.Tran
 */
public class SharedData {
    int x = 10;

    public SharedData() {
    }

    public int getX() {
        return x;
    }

    public void setX(int x) {
        this.x = x;
    }
    
    public synchronized void change(String name, int v) {
        System.out.println(name + ", x = " + x + ", v = " + v);
        x += v;
        System.out.println(name + ", x = " + x);
        //vi du: v = 2
        //x = 10, v = 2
        //x = 12
    }
}

##Thread3.java

/*
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package lession5;

/**
 *
 * @author Diep.Tran
 */
public class Thread3 extends Thread{
    SharedData sharedData;

    public Thread3(SharedData sharedData) {
        this.sharedData = sharedData;
    }

    @Override
    public void run() {
        for (int i = 0; i < 10; i++) {
            sharedData.change("T3", i);
        }
    }
}

##Thread4.java

/*
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 */
package lession5;

/**
 *
 * @author Diep.Tran
 */
public class Thread4 extends Thread{
    SharedData sharedData;

    public Thread4(SharedData sharedData) {
        this.sharedData = sharedData;
    }

    @Override
    public void run() {
        for (int i = 0; i < 10; i++) {
            sharedData.change("T4", i);
        }
    }
    
    
}

##Test2.java

/*
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 */
package lession5;

/**
 *
 * @author Diep.Tran
 */
public class Test2 {
    public static void main(String[] args) {
        SharedData sharedData = new SharedData();
        //test data dung
        sharedData.change("Main", 2);
        sharedData.change("Main", 1);
        sharedData.change("Main", 3);
        
        Thread3 t3 = new Thread3(sharedData);
        Thread4 t4 = new Thread4(sharedData);
        t3.start();
        t4.start();
    }
}