java - Java 中的线程，状态？另外，正确的使用方法是什么？

Question

我要准备后天的考试演示，所以我需要在考试前弄清楚一些事情，希望你们能帮助我。

首先我确实知道线程有 4 种状态(即运行、就绪、阻塞、终止)，但是我不太确定它在 Java 中是如何工作的。在我的代码中，我使用 thread.sleep(3000) 在程序中进行一些等待，这是否会使线程阻塞或就绪？

此外，我还注意到我可能没有以正确的方式使用线程，让我向您展示一些代码

public class BattleHandler implements Runnable {

private Player player;
private Monster enemyMonster;
private Dungeon dungeon;
private JTextArea log;
private GameScreen gScreen;


public void run() {
    try {
        runBattle();
    }
    catch(Exception e) { System.out.println(e);}
}

public BattleHandler(Player AttackingPlayer, JTextArea log, GameScreen gScreen) {
    this.player = AttackingPlayer;
    this.log = log;
    this.gScreen = gScreen;
}

public void setDungeon(Dungeon dungeon) {
    this.dungeon = dungeon;
}

public Dungeon getDungeon() {
    return dungeon;
}

public Monster getEnemyMonster() {
    return enemyMonster;
}

public void setMonster() {

    // First check if dungeon have been init, if not we can't generate the mob
    if(dungeon != null) {

        enemyMonster = new Monster();
        // Generate monster stats
        enemyMonster.generateStats(dungeon);

    }else {
        System.out.println("Dungeon was not initialized");
    }

}
   public void runBattle() throws InterruptedException {

    // Start battle, and run until a contester is dead.

    while(player.getHealth() > 0 && enemyMonster.getHealth() > 0) {

        int playerStrikeDmg = player.strike();

        if(enemyMonster.blockDefend()) {
            log.setText( log.getText() + "\n" + player.getName() +" tried to strike " + enemyMonster.getName()+ ", but " + enemyMonster.getName() + " Blocked.");
        }else if(enemyMonster.dodgeDefend()) {
            log.setText( log.getText() + "\n" + player.getName() +" tried to strike " + enemyMonster.getName()+ ", but " + enemyMonster.getName() + " Blocked.");
        }else {
            enemyMonster.defend(playerStrikeDmg);
            log.setText( log.getText() + "\n" + player.getName() +" strikes " + enemyMonster.getName()+ " for: " + playerStrikeDmg + " left: "+ enemyMonster.getHealth());
        }



        if(enemyMonster.getHealth() < 1) break;

        Thread.sleep(3000);

        // Monster Turn

        int monsterDmg = enemyMonster.strike();


        if(player.blockDefend()) {
            log.setText( log.getText() + "\n" + enemyMonster.getName() +" tried to strike " + player.getName()+ ", but " + player.getName()+ " Blocked.");
        }else if(player.dodgeDefend()) {
            log.setText( log.getText() + "\n" + enemyMonster.getName() +" tried to strike " + player.getName()+ ", but " + player.getName()+ " Dodged.");
        }else {
            player.defend(monsterDmg);
            log.setText( log.getText() + "\n" + enemyMonster.getName() +" strikes " + player.getName()+ " for: " + monsterDmg + " left: "+ player.getHealth());
        }
        gScreen.updateBot();
        Thread.sleep(3000);

    }

当我编写这个代码时，我认为这很酷，但我看到一些人创建了一个类只是为了控制线程本身。我刚刚使使用 Sleep 的类可运行(代码中未显示，但它是一个大类)。

最好能弄清楚这一点，这样我就可以在他们问我这件事之前指出我，你知道拿走那里的弹药。 :D

希望你们能帮助我:)。

谢谢

Answer 1

线程数超过 4 states 。另外，我建议阅读Lesson: Concurrency有关线程的更多信息。

请注意，如果您希望按设定的时间间隔执行任务，我强烈建议使用 Executors框架。