weixin_43931151的博客

public class MyThread extends Thread { public MyThread() { } public MyThread(String name) { super(name); } public void run() { System.out.println(Thread.currentThread().getName()); }}可以，创建带参数的thread 构造函数，将传参传递

方法执行在栈空间Thread 开辟新的栈空间，不影响main线程， 互不干扰；声明Thread 对象则是指向堆内存空间；CPU 具有随机选择权；

public class MyThread extends Thread { public void run() { for (int i = 0; i < 20; i++) { System.out.println("run:" + i); } }}Thread 定义线程任务import java.nio.file.SecureDirectoryStream;public class Demo01Thread {

import java.util.concurrent.locks.ReentrantLock;class Window implements Runnable { private int ticket = 5; // 1.实例化ReentrantLock private ReentrantLock lock = new ReentrantLock(); @Override public void run() { while (true) {

在看到优快云一位博主 写了一个泛型的例子，实际运行时发现有error，没有声明对象；对源代码做了小修改：主要有两种该法：import javax.swing.SizeRequirements;public class GenericFruit { static class Fruit { private String name; @Override public String toString() { return

class Computer { public void transferData(USB usb) {// USB usb = new Flash(); usb.start(); System.out.println("data transimiso"); usb.stop(); }}interface USB { // 常量：定义了长、宽、最大最小的传输速度等 void start(); void

File 类getAbsolutePath()boolean isDirectory()isFile()File[] listFiles()ArrayList objectName =new ArrayList<>();　 // 初始化 static ArrayList<String> getFileName(String path) { ArrayList<String> file_list = new ArrayList<&