JAVA编程思想读书笔记（五）

public class Daemon extends Thread {
    private static final int SIZE = 10;
    private Thread[] t = new Thread[SIZE];

    public Daemon() {
        setDaemon(true);
        start();
    }

    @Override
    public void run() {
        for (int i = 0; i ) {
            t[i] = new DaemonSpawn(i);
        }
        for (int i = 0; i ) {
            System.out.println("t[" + i + "].isDaemon()=" + t[i].isDaemon());
        }
        while (true) {
            yield();
        }

    }
}

public class DaemonSpawn extends Thread {
    public DaemonSpawn(int i) {
        System.out.println("DaemonSpwan " + i + " started");
        start();
    }

    @Override
    public void run() {
        while (true) {
            yield();
        }
    }
}

public class Daemons {
    public static void main(String args[]) {
        Thread d = new Daemon();
        System.out.println("d.isDaemon()= " + d.isDaemon());
        BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
        System.out.println("Waiting for CR");
        try {
            stdin.readLine();
        } catch (IOException e) {

        }
    }
}

d.isDaemon()= true
Waiting for CR
DaemonSpwan 0 started
DaemonSpwan 1 started
DaemonSpwan 2 started
DaemonSpwan 3 started
DaemonSpwan 4 started
DaemonSpwan 5 started
DaemonSpwan 6 started
DaemonSpwan 7 started
DaemonSpwan 8 started
DaemonSpwan 9 started
t[0].isDaemon()=true
t[1].isDaemon()=true
t[2].isDaemon()=true
t[3].isDaemon()=true
t[4].isDaemon()=true
t[5].isDaemon()=true
t[6].isDaemon()=true
t[7].isDaemon()=true
t[8].isDaemon()=true
t[9].isDaemon()=true