1 package com.zzp.thread;
2 /**
3 *
4 * 创建线程：方式一
5 * 1、继承thread类，重写run方法
6 * 2、启动线程，调用start方法
7 *
8 * @author java
9 *
10 */
11 public class StartThread extends Thread{
12 //重写run()
13 @Override
14 public void run() {
15 for(int i=0;i<10;i++){
16 System.out.println("一边学习");
17 }
18 }
19
20 public static void main(String[] args) {
21 //创建Thread子类对象
22 StartThread st = new StartThread();
23 //启动，并不是立即启动，而是等待cpu调用，至于CPU何时调用，不知道
24 //开启线程的时机很重要
25 st.start();
26 //如果直接调用run()方法，则是普通方法调用，不是开启多线程
27 //st.run();
28
29 for(int i=0;i<10;i++){
30 System.out.println("一边听歌");
31 }
32 }
33 }
1 package com.zzp.thread;
2
3 import java.io.File;
4 import java.io.IOException;
5 import java.net.MalformedURLException;
6 import java.net.URL;
7
8 import org.apache.commons.io.FileUtils;
9
10 /**
11 *
12 * 下载工具类
13 * @author java
14 *
15 */
16 public class WebDownLoader {
17 public void downLoader(String url,String name){
18 try {
19 FileUtils.copyURLToFile(new URL(url), new File(name));
20 } catch (MalformedURLException e) {
21 e.printStackTrace();
22 } catch (IOException e) {
23 e.printStackTrace();
24 }
25 }
26 }
1 package com.zzp.thread;
2 /**
3 *
4 * 创建图片下载的线程
5 * @author java
6 *
7 */
8 public class TDownLoader extends Thread{
9 private String url;
10 private String name;
11
12 public TDownLoader(String url, String name) {
13 super();
14 this.url = url;
15 this.name = name;
16 }
17 //重写run()
18 @Override
19 public void run() {
20 WebDownLoader wd = new WebDownLoader();
21 wd.downLoader(url, name);
22 }
23
24 public static void main(String[] args) {
25 TDownLoader td1 = new TDownLoader("https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E5%AE%88%E7%A0%B4%E7%A6%BB&step_word=&hs=0&pn=1&spn=0&di=79296871830&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=1435309020%2C3477682663&os=1841078546%2C3614953869&simid=4194686237%2C632091804&adpicid=0&lpn=0&ln=104&fr=&fmq=1536156608183_R&fm=&ic=undefined&s=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=http%3A%2F%2Ft2.qpic.cn%2Fmblogpic%2Fee290b3b55e018eb8fac%2F2000&fromurl=ippr_z2C%24qAzdH3FAzdH3Fr_z%26e3Bp_z%26e3Bqq_z%26e3Bv54AzdH3Fs5g2ojtk5AzdH3Frw2j_z%26e3Brir%3Ft1%3Dn8bdcba9acn0cl9%26st1%3D8b989dd8mbcdalmcl8db&gsm=0&rpstart=0&rpnum=0&islist=&querylist=","spl.jpg");
26 TDownLoader td2 = new TDownLoader("https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=false&word=%E6%9D%8E%E5%B0%8F%E9%BE%99&step_word=&hs=0&pn=0&spn=0&di=94581897410&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=2&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=-1&cs=2752933258%2C795342213&os=1992076552%2C3728441564&simid=3465896125%2C219929152&adpicid=0&lpn=0&ln=3370&fr=&fmq=1536156674237_R&fm=result&ic=0&s=undefined&se=&sme=&tab=0&width=&height=&face=undefined&ist=&jit=&cg=star&bdtype=0&oriquery=&objurl=http%3A%2F%2Fimgcache.cjmx.com%2Fstar%2F201607%2F20160719231717732.jpg&fromurl=ippr_z2C%24qAzdH3FAzdH3Ffpw6_z%26e3Bv34x_z%26e3Bv54AzdH3Fda8ma0AzdH3F8abdba8_z%26e3Bfip4s&gsm=0&rpstart=0&rpnum=0&islist=&querylist=","lxl.jpg");
27 TDownLoader td3 = new TDownLoader("https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E6%B2%B3%E5%8D%97%E7%90%86%E5%B7%A5%E5%A4%A7%E5%AD%A6&step_word=&hs=0&pn=0&spn=0&di=115015699590&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=2&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=-1&cs=3620107849%2C3756859208&os=1374852277%2C1275983326&simid=4171483572%2C611783800&adpicid=0&lpn=0&ln=1851&fr=&fmq=1536156735988_R&fm=result&ic=0&s=undefined&se=&sme=&tab=0&width=&height=&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=http%3A%2F%2Fimg.gaosan.com%2Fupload%2Fwebimg%2F1785.jpg&fromurl=ippr_z2C%24qAzdH3FAzdH3Fooo_z%26e3B2w5fwg_z%26e3Bv54AzdH3F2w5hw5AzdH3F88d0la_z%26e3Bip4s&gsm=0&rpstart=0&rpnum=0&islist=&querylist=","lgd.jpg");
28
29 td1.start();
30 td2.start();
31 td3.start();
32 }
33
34 }
1 package com.zzp.thread;
2 /**
3 *
4 * 创建线程：方式二
5 * 1、实现runnable接口，重写run方法
6 * 2、启动线程+thread类+调用start方法
7 * 推荐使用，避免单继承造成的局限性
8 * @author java
9 *
10 */
11 public class StartRun implements Runnable{
12 //重写run()
13 @Override
14 public void run() {
15 for(int i=0;i<10;i++){
16 System.out.println("一边学习");
17 }
18 }
19
20 public static void main(String[] args) {
21 //创建Thread子类对象
22 //StartRun sr = new StartRun();
23 //创建Thread类对象
24 //Thread t = new Thread(sr);
25 //启动，并不是立即启动，而是等待cpu调用，至于CPU何时调用，不知道
26 //开启线程的时机很重要
27 //t.start();
28 //如果直接调用run()方法，则是普通方法调用，不是开启多线程
29 //st.run();
30
31 //如果创建的对象只用一次
32 new Thread(new StartRun()).start();
33
34 for(int i=0;i<10;i++){
35 System.out.println("一边听歌");
36 }
37 }
38 }
1 package com.zzp.thread;
2 /**
3 *
4 * 创建图片下载的线程
5 * @author java
6 *
7 */
8 public class IDownLoader implements Runnable{
9 private String url;
10 private String name;
11
12 public IDownLoader(String url, String name) {
13 super();
14 this.url = url;
15 this.name = name;
16 }
17 //重写run()
18 @Override
19 public void run() {
20 WebDownLoader wd = new WebDownLoader();
21 wd.downLoader(url, name);
22 }
23
24 public static void main(String[] args) {
25 IDownLoader td1 = new IDownLoader("https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E5%AE%88%E7%A0%B4%E7%A6%BB&step_word=&hs=0&pn=1&spn=0&di=79296871830&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=1435309020%2C3477682663&os=1841078546%2C3614953869&simid=4194686237%2C632091804&adpicid=0&lpn=0&ln=104&fr=&fmq=1536156608183_R&fm=&ic=undefined&s=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=http%3A%2F%2Ft2.qpic.cn%2Fmblogpic%2Fee290b3b55e018eb8fac%2F2000&fromurl=ippr_z2C%24qAzdH3FAzdH3Fr_z%26e3Bp_z%26e3Bqq_z%26e3Bv54AzdH3Fs5g2ojtk5AzdH3Frw2j_z%26e3Brir%3Ft1%3Dn8bdcba9acn0cl9%26st1%3D8b989dd8mbcdalmcl8db&gsm=0&rpstart=0&rpnum=0&islist=&querylist=","spl.jpg");
26 IDownLoader td2 = new IDownLoader("https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=false&word=%E6%9D%8E%E5%B0%8F%E9%BE%99&step_word=&hs=0&pn=0&spn=0&di=94581897410&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=2&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=-1&cs=2752933258%2C795342213&os=1992076552%2C3728441564&simid=3465896125%2C219929152&adpicid=0&lpn=0&ln=3370&fr=&fmq=1536156674237_R&fm=result&ic=0&s=undefined&se=&sme=&tab=0&width=&height=&face=undefined&ist=&jit=&cg=star&bdtype=0&oriquery=&objurl=http%3A%2F%2Fimgcache.cjmx.com%2Fstar%2F201607%2F20160719231717732.jpg&fromurl=ippr_z2C%24qAzdH3FAzdH3Ffpw6_z%26e3Bv34x_z%26e3Bv54AzdH3Fda8ma0AzdH3F8abdba8_z%26e3Bfip4s&gsm=0&rpstart=0&rpnum=0&islist=&querylist=","lxl.jpg");
27 IDownLoader td3 = new IDownLoader("https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E6%B2%B3%E5%8D%97%E7%90%86%E5%B7%A5%E5%A4%A7%E5%AD%A6&step_word=&hs=0&pn=0&spn=0&di=115015699590&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=2&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=-1&cs=3620107849%2C3756859208&os=1374852277%2C1275983326&simid=4171483572%2C611783800&adpicid=0&lpn=0&ln=1851&fr=&fmq=1536156735988_R&fm=result&ic=0&s=undefined&se=&sme=&tab=0&width=&height=&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=http%3A%2F%2Fimg.gaosan.com%2Fupload%2Fwebimg%2F1785.jpg&fromurl=ippr_z2C%24qAzdH3FAzdH3Fooo_z%26e3B2w5fwg_z%26e3Bv54AzdH3F2w5hw5AzdH3F88d0la_z%26e3Bip4s&gsm=0&rpstart=0&rpnum=0&islist=&querylist=","lgd.jpg");
28
29 new Thread(td1).start();
30 new Thread(td2).start();
31 new Thread(td3).start();
32 }
33
34 }
1 package com.zzp.thread;
2 /**
3 *
4 * 共享资源，会出现并发问题（后面要确保线程安全）
5 * @author java
6 *
7 */
8 public class Web12306 implements Runnable{
9 private int tikectsNum = 99;
10 @Override
11 public void run() {
12 while(true){
13 if(tikectsNum < 0){
14 break;
15 }
16 //当设置线程延迟的时候，就会出现线程不安全的情况
17 try {
18 Thread.sleep(200);
19 } catch (InterruptedException e) {
20 e.printStackTrace();
21 }
22 System.out.println(Thread.currentThread().getName()+"--->"+tikectsNum--);
23 }
24 }
25 public static void main(String[] args) {
26 //一份资源
27 Web12306 wb = new Web12306();
28 //多份代理
29 new Thread(wb,"码农").start();
30 new Thread(wb,"马云").start();
31 new Thread(wb,"麻黄").start();
32 }
33 }
1 package com.zzp.thread;
2 /**
3 *
4 * 模拟龟兔赛跑
5 * @author java
6 *
7 */
8 public class Racer implements Runnable{
9 private static String winner;
10 @Override
11 public void run() {
12 for(int i=1;i<=100;i++){
13 //兔子每走10步，休息一次
14 /*if(Thread.currentThread().getName().equals("兔子") && (i%10 == 0)){
15 try {
16 Thread.sleep(200);
17 } catch (InterruptedException e) {
18 e.printStackTrace();
19 }
20 }*/
21 System.out.println(Thread.currentThread().getName()+"-->"+i);
22 boolean flag = gameOver(i);
23 if(flag){
24 break;
25 }
26 }
27
28 }
29 public boolean gameOver(int i){
30 if(winner != null){
31 return true;
32 }else{
33 if(i==100){
34 winner = Thread.currentThread().getName();
35 System.out.println("winner:"+winner);
36 return true;
37 }
38 }
39 return false;
40 }
41
42 public static void main(String[] args) {
43 Racer rc = new Racer();
44 new Thread(rc,"乌龟").start();
45 new Thread(rc,"兔子").start();
46 }
47 }
原文地址：https://www.cnblogs.com/zhangzhipeng001/p/9594953.html
时间： 2024-08-13 14:07:57