java - 每1秒钟执行一次此代码(Java)

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我有以下代码，但是我希望它每秒运行一次，因此，如果questNumber更改，那么currentQuestStats也将更改。
代码：http://pastebin.com/jTAwztPX

最佳答案

使用JAVA 5中添加的ScheduledExecutorService，必须导入以下类。

import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;

您可以像下面这样使用它：

ScheduledExecutorService exec = Executors.newSingleThreadScheduledExecutor();
exec.scheduleAtFixedRate(new Runnable() {
    @Override
    public void run() {
        // TODO add your code here:
    }
}, 0, 1, TimeUnit.SECONDS);

回答


在checkQuestNumber()类中创建一个称为QuestsManagement的方法。
还为QuestsManagement创建一个构造函数
使用此值（currentQuestStats）初始化§e§lCurrent quest: Kill 1 zombie。
将currentQuestStats和questNumber设为私有并封装它们。


更改后，这是您的QuestsManagement

public class QuestsManagement {

    private String currentQuestStats = "§e§lCurrent quest: Kill 1 zombie";
    private int questNumber = 1;

    public String getCurrentQuestStats() {
        return currentQuestStats;
    }

    public int getQuestNumber() {
        return questNumber;
    }

    QuestsManagement() {
        ScheduledExecutorService exec = Executors.newSingleThreadScheduledExecutor();
        exec.scheduleAtFixedRate(new Runnable() {

            @Override
            public void run() {
               checkQuestNumber();
            }
        }, 0, 1, TimeUnit.SECONDS);
    }

    void checkQuestNumber() {

        if (questNumber == 1) {
            currentQuestStats = "§e§lCurrent quest: Kill 1 zombie";
            // change manual!
            questNumber = 2;
        } else if (questNumber == 2) {
            currentQuestStats = "§e§lCurrent quest: Walk 100 blocks";
            // change manual!
            questNumber = 1;
        }
    }
}

要测试代码！

在您的自定义命令文件中

创建QuestsManagement的实例并使用getCurrentQuestStats()方法

QuestsManagement m = new QuestsManagement();
player.addChatMessage("Test" + QuestsManagement.getCurrentQuestStats());