请编写Java代码解决哲学家进餐问题
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
public class DiningPhilosophers {
public static void main(String[] args) {
Lock[] forks = new ReentrantLock[5];
for (int i = 0; i < 5; i++) {
forks[i] = new ReentrantLock();
}
Philosopher[] philosophers = new Philosopher[5];
for (int i = 0; i < 5; i++) {
philosophers[i] = new Philosopher(i, forks[i], forks[(i + 1) % 5]);
}
for (Philosopher philosopher : philosophers) {
philosopher.start();
}
}
static class Philosopher extends Thread {
private int id;
private Lock leftFork;
private Lock rightFork;
public Philosopher(int id, Lock leftFork, Lock rightFork) {
this.id = id;
this.leftFork = leftFork;
this.rightFork = rightFork;
}
public void run() {
while (true) {
think();
pickUpLeftFork();
pickUpRightFork();
eat();
putDownRightFork();
putDownLeftFork();
}
}
private void think() {
System.out.println("Philosopher " + id + " is thinking");
try {
Thread.sleep((long) (Math.random() * 5000));
} catch (InterruptedException e) {
e.printStackTrace();
}
}
private void eat() {
System.out.println("Philosopher " + id + " is eating");
try {
Thread.sleep((long) (Math.random() * 5000));
} catch (InterruptedException e) {
e.printStackTrace();
}
}
private void pickUpLeftFork() {
leftFork.lock();
System.out.println("Philosopher " + id + " picked up left fork");
}
private void pickUpRightFork() {
rightFork.lock();
System.out.println("Philosopher " + id + " picked up right fork");
}
private void putDownLeftFork() {
leftFork.unlock();
System.out.println("Philosopher " + id + " put down left fork");
}
private void putDownRightFork() {
rightFork.unlock();
System.out.println("Philosopher " + id + " put down right fork");
}
}
}
``
原文地址: https://www.cveoy.top/t/topic/frW3 著作权归作者所有。请勿转载和采集!