请教！java定时器TimerTask 如何立即停止定时 不用再运行一个周期

[鲤鱼爱上猫]

this.cancel();只能在下一个周期才能停止，我想当我想要停止的时候立即停止
比如当我输入 结束1 的时候 立即停止 启动1 的定时，不会在1分钟后停止

public static void main(String[] args) throws InterruptedException {

        while(true){
            System.out.print("输入");
            Scanner scan = new Scanner(System.in);
            String read = scan.nextLine();
            System.out.println("输入数据："+read);

            if(read.equals("启动1")){
                new MailSend().triger("2019-06-11 16:05:00","sssssssssss",5,60 * 1000);
            }else if(read.equals("启动2")){
                new MailSend().triger("2019-06-11 09:30:00","ddddddddddd",6,180 * 1000);
            }else if(read.equals("结束1")){
                new MailSend().setA(5);
            }else if(read.equals("结束2")){
                new MailSend().setA(6);
            }
        }

    }




public void triger(String date1,String s,int j,long tses) throws InterruptedException {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date date = new Date();
        try {
            date = sdf.parse(date1);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        TimerTask task = new TimerTask() {
            @Override
            public void run() {
                if(a == j){
                    this.cancel();
                    System.out.println("结束任务");
                    return;
                }
                System.out.println(sdf.format(new Date()) + "-------" + s);

            }
        };
        Timer timer = new Timer();
        long delay = 0;
        long intevalPeriod =   1000;
        timer.scheduleAtFixedRate(task, date, tses);

    }

[鲤鱼爱上猫]

引用 1 楼 maradona1984 的回复:

你代码这些当然做不到立即停止,因为你停止的代码依赖于任务的执行
你应该在setA方法里调用TimerTask 的cancel()方法

你的代码需要改造很多地方,而且setA方法修改的是静态变量?这代码写的挺奇怪的,并不是个好习惯
稍微改造了下你的代码

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
import java.util.Timer;
import java.util.TimerTask;

public class MailSend {

	private Map<Integer, TimerTask> map = new HashMap<>();
	private Timer timer = new Timer();
	public void triger(String s, int j, long tses) throws InterruptedException, ParseException {
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		TimerTask task = new TimerTask() {
			@Override
			public void run() {
				System.out.println(sdf.format(new Date()) + "-------" + s);
			}
		};
		timer.scheduleAtFixedRate(task, 1000L, tses);
		map.put(j, task);
	}
	public void stop(int sign) {
		TimerTask task = map.get(sign);
		if (task != null) {
			task.cancel();
			System.out.printf("结束任务[%s]", sign);
			map.remove(sign);
		}
	}
	public static void main(String[] args) throws Exception {
		MailSend mailSend = new MailSend();
		try (Scanner scan = new Scanner(System.in)) {
			while (true) {
				System.out.print("输入");
				String read = scan.nextLine();
				System.out.println("输入数据：" + read);
				if (read.equals("启动1")) {
					mailSend.triger("sssssssssss", 5, 10 * 1000);
				} else if (read.equals("启动2")) {
					mailSend.triger("ddddddddddd", 6, 15 * 1000);
				} else if (read.equals("结束1")) {
					mailSend.stop(5);
				} else if (read.equals("结束2")) {
					mailSend.stop(5);
				}
			}
		}
	}

}

谢谢！！ 谢谢！！

[maradona1984]

你代码这些当然做不到立即停止,因为你停止的代码依赖于任务的执行 你应该在setA方法里调用TimerTask 的cancel()方法 你的代码需要改造很多地方,而且setA方法修改的是静态变量?这代码写的挺奇怪的,并不是个好习惯 稍微改造了下你的代码

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
import java.util.Timer;
import java.util.TimerTask;

public class MailSend {

	private Map<Integer, TimerTask> map = new HashMap<>();
	private Timer timer = new Timer();
	public void triger(String s, int j, long tses) throws InterruptedException, ParseException {
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		TimerTask task = new TimerTask() {
			@Override
			public void run() {
				System.out.println(sdf.format(new Date()) + "-------" + s);
			}
		};
		timer.scheduleAtFixedRate(task, 1000L, tses);
		map.put(j, task);
	}
	public void stop(int sign) {
		TimerTask task = map.get(sign);
		if (task != null) {
			task.cancel();
			System.out.printf("结束任务[%s]", sign);
			map.remove(sign);
		}
	}
	public static void main(String[] args) throws Exception {
		MailSend mailSend = new MailSend();
		try (Scanner scan = new Scanner(System.in)) {
			while (true) {
				System.out.print("输入");
				String read = scan.nextLine();
				System.out.println("输入数据：" + read);
				if (read.equals("启动1")) {
					mailSend.triger("sssssssssss", 5, 10 * 1000);
				} else if (read.equals("启动2")) {
					mailSend.triger("ddddddddddd", 6, 15 * 1000);
				} else if (read.equals("结束1")) {
					mailSend.stop(5);
				} else if (read.equals("结束2")) {
					mailSend.stop(5);
				}
			}
		}
	}

}