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开启两个线程A、B，打印1到10，线程A打印奇数（1、3、5

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开启两个线程A、B，打印1到10，线程A打印奇数（1、3、5、7、9），线程B打印偶数（2、4、6、8、10）。
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dxzmpk头像 dxzmpk 
package com.company.multi_thread.PrintOddEvenWN;

class TaskEvenOdd implements Runnable {
    private int max;
    private Printer print;
    private boolean isEvenNumber;

    public TaskEvenOdd(Printer print, int max, boolean isEvenNumber) {
        this.max = max;
        this.print = print;
        this.isEvenNumber = isEvenNumber;
    }

    // standard constructors

    @Override
    public void run() {
        int number = isEvenNumber ? 2 : 1;
        while (number <= max) {
            if (isEvenNumber) {
                print.printEven(number);
            } else {
                print.printOdd(number);
            }
            number += 2;
        }
    }

    static class Printer {
        private volatile boolean isOdd;

        synchronized void printEven(int number) {
            while (!isOdd) {
                try {
                    wait();
                } catch (InterruptedException e) {
                    Thread.currentThread().interrupt();
                }
            }
            System.out.println(Thread.currentThread().getName() + ":" + number);
            isOdd = false;
            notify();
        }

        synchronized void printOdd(int number) {
            while (isOdd) {
                try {
                    wait();
                } catch (InterruptedException e) {
                    Thread.currentThread().interrupt();
                }
            }
            System.out.println(Thread.currentThread().getName() + ":" + number);
            isOdd = true;
            notify();
        }
    }

    public static void main(String... args) {
        Printer print = new Printer();
        Thread t1 = new Thread(new TaskEvenOdd(print, 10, false),"Odd");
        Thread t2 = new Thread(new TaskEvenOdd(print, 10, true),"Even");
        t1.start();
        t2.start();
    }
}

发表于 2021-01-15 23:04:00 回复(0)
专吃想飞的鱼头像 专吃想飞的鱼 
import java.util.concurrent.locks.LockSupport;

/**
 * 开启两个线程A、B，打印1到10，线程A打印奇数（1、3、5、7、9），线程B打印偶数（2、4、6、8、10）。
 */
public class LockSupportDemo {

    static Thread thread1;
    static Thread thread2;

    public static void main(String[] args) {
        thread1 = new Thread(() -> {
            for (int i = 1; i <= 9; i += 2) {
                System.out.println(i);
                LockSupport.unpark(thread2);
                LockSupport.park();
            }
        });
        thread2 = new Thread(() -> {
            for (int i = 2; i <= 10; i = i + 2) {
                LockSupport.park();
                System.out.println(i);
                LockSupport.unpark(thread1);
            }
        });
        thread1.start();
        thread2.start();
    }
}

发表于 2021-02-05 08:58:36 回复(0)
我素e控维爱头像 我素e控维爱 
new Thread(()->{
    for(int i=1;i<=10;i++) {
        if(i%2!=0) {
            system.out.println(i);
        }
    }
}, A).start();
new Thread(()->{
    for(int i=1;i<=10;i++) {
        if(i%2==0) {
            system.out.println(i);
        }
    }
}, B).start();


        

发表于 2021-06-28 15:43:02 回复(0)
牛客794690919号头像 牛客794690919号 
public class Demo{
     public static void main(String[] args){
        //打印奇数
        new Thread(new Runnable(){
            public void run(){
                for(int i=1;i<=10;i++){
                    if(i%2!=0){
                        System.out.println(i);
                    }
                }
            }
        },"A").start();
        //打印偶数
        new Thread(new Runnable(){
            public void run(){
                for(int i=1;i<=10;i++){
                    if(i%2==0){
                        System.out.println(i);
                    }
                }
            }
        },"B").start();
    }
}

发表于 2021-02-23 20:53:28 回复(1)
JayChou1999头像 JayChou1999
class print implements Runnable{
    public static int count = 0;
    @Override
    public void run() {
        synchronized (this){
            if(count == 0){
                odd();
                count++;
            }else{
                even();
            }
        }
    }
    public void odd(){
        for(int i = 1;i <= 10;i++){
            if(i % 2 != 0)
                System.out.println("基数:"+i);
        }
    }
    public void even(){
        for (int i = 1;i <= 10;i++){
            if(i % 2 == 0)
                System.out.println("偶数:"+i);
        }
    }

    public static void main(String[] args) {
        print p1 = new print();
        Thread thread = new Thread(p1);
        Thread thread2 = new Thread(p1);
        thread.start();
        thread2.start();
    }
}
发表于 2022-02-22 15:48:05 回复(0)
牛客428278086号头像 牛客428278086号 
/**  * @author on 2021/2/23  */ public class test4 { public static void main(String[] args) { new Test5().start();  new Test1().start();  }
} class Test5 extends Thread {
    @Override public void run() { for (int i=1;i<=10;i++){ if(i%2==1){
                System.out.println(i);   }
        }
    }
} class Test1 extends Thread {
    @Override public void run() { for (int i=1;i<=10;i++){ if(i%2==0){
                System.out.println(i);  }
        }
    }
}

编辑于 2021-02-23 16:35:31 回复(0)
名字叫可可很难么头像 名字叫可可很难么 


package cn.wzb.come;

import java.util.concurrent.locks.LockSupport;

public class ComeTest {

    static Thread threadA;
    static Thread threadB;

    public static void main(String[] args) throws Exception {
        /**
         * 开启两个线程A、B，打印1到10，线程A打印奇数（1、3、5、7、9），线程B打印偶数（2、4、6、8、10）。
         */
        System.out.println("线程有序执行");
        testA();
        Thread.sleep(1000);
        System.out.println("线程交替执行");
        testB();
    }


    /**
     * 线程A先输出，然后线程B再输出
     */
    public static void testA(){
        threadA = new Thread(
                new Runnable() {
                    @Override
                    public void run() {
                        // 阻塞A线程
                        LockSupport.park();
                        for (int i = 1; i <= 10; i++) {
                            if (i % 2 == 1) {
                                System.out.println("ThreadA : " + Thread.currentThread().getName() + "，i : " + i);
                            }
                        }
                        // 唤醒B线程
                        LockSupport.unpark(threadB);
                    }
                }
        );

        threadB = new Thread(
                new Runnable() {
                    @Override
                    public void run() {

                        // 唤醒A线程
                        LockSupport.unpark(threadA);
                        // 阻塞B线程
                        LockSupport.park();
                        for (int i = 1; i <= 10; i++) {
                            if (i % 2 == 0) {
                                // 锁定B线程
                                System.out.println("ThreadB : " + Thread.currentThread().getName() + "，i : " + i);
                            }
                        }
                    }
                }
        );

        threadA.start();
        threadB.start();
    }

    /**
     * 线程A、B交替输出
     * @throws InterruptedException
     */
    public static void testB() throws InterruptedException {
        threadA = new Thread(
                new Runnable() {
                    @Override
                    public void run() {
                        for (int i = 1; i <= 10; i++) {
                            if (i % 2 == 1) {
                                System.out.println("ThreadA : " + Thread.currentThread().getName() + "，i : " + i);
                                // 释放B线程
                                LockSupport.unpark(threadB);
//                                System.out.println("释放B线程");
                                // 锁定A线程
//                                System.out.println("锁定A线程");
                                LockSupport.park();
                            }
                        }
                    }
                }
        );

        threadB = new Thread(
                new Runnable() {
                    @Override
                    public void run() {
                        for (int i = 1; i <= 10; i++) {
                            if (i % 2 == 0) {
                                // 锁定B线程
//                                System.out.println("锁定B线程");
                                LockSupport.park();
                                System.out.println("ThreadB : " + Thread.currentThread().getName() + "，i : " + i);
                                // 释放A线程
//                                System.out.println("释放A线程");
                                LockSupport.unpark(threadA);
                            }
                        }
                    }
                }
        );

        threadA.start();
        threadB.start();
    }

}
发表于 2021-02-21 21:43:50 回复(0)
李厘里头像 李厘里 




    @Data
    static
    class Test implements Runnable {

        private static Integer maxNum;

        private Integer startNum;

        private String name;

        public Test(Integer startNum, String name) {
            this.startNum = startNum;
            this.name = name;
        }

        @Override
        public void run() {
            while (startNum <= maxNum) {
                System.out.println(name + ":" + startNum);
                startNum += 2;
            }
        }
    }

    public static void main(String[] args) {
        Test.maxNum = 10;
        new Thread(new Test(1, "a")).start();
        new Thread(new Test(2, "b")).start();
    }





有盆友说要按顺序，加了个顺序




    @Data
    static
    class Test implements Runnable {

        private static Integer maxNum;

        private static Integer startNum;

        private Boolean isOdd;

        private String name;

        public Test(String name, Boolean isOdd) {
            this.name = name;
            this.isOdd = isOdd;
        }

        @Override
        public void run() {
            while (startNum <= maxNum) {
                if (currentIsOdd(startNum).equals(isOdd)) {
                    System.out.println(name + ":" + startNum);
                    startNum++;
                    try {
                        Thread.sleep(5);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                        break;
                    }
                }
            }
        }

        public Boolean currentIsOdd(Integer num) {
            return num % 2 == 1;
        }
    }

    public static void main(String[] args) {
        Test.startNum = 1;
        Test.maxNum = 10;
        new Thread(new Test("a", true)).start();
        new Thread(new Test("b", false)).start();
    }

编辑于 2021-01-28 10:55:19 回复(2)
清香的茉莉头像 清香的茉莉 
class Main implements Runnable{
    volatile int i = 1;
    @Override
    public void run() {
     synchronized (this){
        while (true){
             notify();
             if(i<=10){
                 System.out.println(i);
                 i++;
             }else break;
             try {
                 wait();
             } catch (InterruptedException e) {
                 e.printStackTrace();
             }
         }
     }
    }
    public static void main(String[] args) {
        Main task = new Main();
        new Thread(task).start();
        new Thread(task).start();
    }
}

发表于 2021-01-18 12:42:25 回复(0)
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问题信息

阅文集团 2021 Java工程师
来自：2023届阅文Java...
上传者：小小
难度：
9条回答 2523浏览

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