Java7并发编程实战（一） 线程的管理

1：线程的创建

 　　1：继承Thread类，并且覆盖run（）方法

　　  2：创建一个实现Runnable接口的类。使用带参数的Thread构造器来构造

2：example-->计算打印乘法表

　　 首先创建一个Calculator类，实现Runnable接口

public class Calculator implements Runnable {

    /**
     *  The number
     */
    private int number;

    /**
     *  Constructor of the class
     * @param number : The number
     */
    public Calculator(int number) {
        this.number=number;
    }

    /**
     *  Method that do the calculations
     */
    @Override
    public void run() {
        for (int i=1; i<=10; i++){
            System.out.printf("%s: %d * %d = %d\n",Thread.currentThread().getName(),number,i,i*number);
        }
    }

}

　　在Main方法中调用

public class Main {

    /**
     * Main method of the example
     * @param args
     */
    public static void main(String[] args) {

        //Launch 10 threads that make the operation with a different number
        for (int i=1; i<=10; i++){
            Calculator calculator=new Calculator(i);
            Thread thread=new Thread(calculator);
            thread.start();
        }
    }
}

打印结果可以看到线程的无序性

Thread-1: 2 * 1 = 2
Thread-8: 9 * 1 = 9
Thread-9: 10 * 1 = 10
Thread-9: 10 * 2 = 20
Thread-5: 6 * 1 = 6
Thread-2: 3 * 1 = 3
Thread-3: 4 * 1 = 4
Thread-3: 4 * 2 = 8
Thread-3: 4 * 3 = 12
Thread-3: 4 * 4 = 16
Thread-3: 4 * 5 = 20
Thread-3: 4 * 6 = 24
Thread-3: 4 * 7 = 28
Thread-3: 4 * 8 = 32
Thread-3: 4 * 9 = 36
Thread-3: 4 * 10 = 40
Thread-4: 5 * 1 = 5
Thread-7: 8 * 1 = 8
Thread-7: 8 * 2 = 16
Thread-7: 8 * 3 = 24
Thread-7: 8 * 4 = 32
Thread-7: 8 * 5 = 40
Thread-7: 8 * 6 = 48
Thread-6: 7 * 1 = 7
Thread-6: 7 * 2 = 14
Thread-6: 7 * 3 = 21
Thread-6: 7 * 4 = 28
Thread-6: 7 * 5 = 35
Thread-6: 7 * 6 = 42
Thread-6: 7 * 7 = 49
Thread-6: 7 * 8 = 56
Thread-6: 7 * 9 = 63
Thread-6: 7 * 10 = 70
Thread-0: 1 * 1 = 1
Thread-7: 8 * 7 = 56
Thread-4: 5 * 2 = 10
Thread-4: 5 * 3 = 15
Thread-4: 5 * 4 = 20
Thread-4: 5 * 5 = 25
Thread-4: 5 * 6 = 30
Thread-4: 5 * 7 = 35
Thread-4: 5 * 8 = 40
Thread-4: 5 * 9 = 45
Thread-2: 3 * 2 = 6
Thread-2: 3 * 3 = 9
Thread-5: 6 * 2 = 12
Thread-5: 6 * 3 = 18
Thread-5: 6 * 4 = 24
Thread-9: 10 * 3 = 30
Thread-9: 10 * 4 = 40
Thread-9: 10 * 5 = 50
Thread-9: 10 * 6 = 60
Thread-8: 9 * 2 = 18
Thread-1: 2 * 2 = 4
Thread-1: 2 * 3 = 6
Thread-1: 2 * 4 = 8
Thread-1: 2 * 5 = 10
Thread-1: 2 * 6 = 12
Thread-1: 2 * 7 = 14
Thread-1: 2 * 8 = 16
Thread-1: 2 * 9 = 18
Thread-1: 2 * 10 = 20
Thread-8: 9 * 3 = 27
Thread-8: 9 * 4 = 36
Thread-9: 10 * 7 = 70
Thread-5: 6 * 5 = 30
Thread-5: 6 * 6 = 36
Thread-5: 6 * 7 = 42
Thread-5: 6 * 8 = 48
Thread-5: 6 * 9 = 54
Thread-5: 6 * 10 = 60
Thread-2: 3 * 4 = 12
Thread-2: 3 * 5 = 15
Thread-2: 3 * 6 = 18
Thread-2: 3 * 7 = 21
Thread-2: 3 * 8 = 24
Thread-2: 3 * 9 = 27
Thread-2: 3 * 10 = 30
Thread-4: 5 * 10 = 50
Thread-7: 8 * 8 = 64
Thread-0: 1 * 2 = 2
Thread-0: 1 * 3 = 3
Thread-0: 1 * 4 = 4
Thread-7: 8 * 9 = 72
Thread-9: 10 * 8 = 80
Thread-9: 10 * 9 = 90
Thread-9: 10 * 10 = 100
Thread-8: 9 * 5 = 45
Thread-8: 9 * 6 = 54
Thread-8: 9 * 7 = 63
Thread-8: 9 * 8 = 72
Thread-8: 9 * 9 = 81
Thread-8: 9 * 10 = 90
Thread-7: 8 * 10 = 80
Thread-0: 1 * 5 = 5
Thread-0: 1 * 6 = 6
Thread-0: 1 * 7 = 7
Thread-0: 1 * 8 = 8
Thread-0: 1 * 9 = 9
Thread-0: 1 * 10 = 10