crackerthread.java

< Java多线程设计模式>> 一书

public class CrackerThread extends Thread {
    private SecurityGate gate;
    public CrackerThread(SecurityGate gate) {
        this.gate = gate;
    }
    public void run() {
        for (int i = 0; i < 1000000; i++) {
            gate.enter();
            gate.exit();
        }
    }
}