java线程学习例子
public class TextDemo {
public static void main(String[] args) {
RunnableEemo r1 = new RunnableEemo();
r1.REemo(r1);
System.out.println(r1.print());
}
}
class RunnableEemo extends ThreadRun implements Runnable {
Thread t2 = null;
public void REemo(RunnableEemo r1) {
Thread t1 = new Thread(r1, "第一线程 ");
System.out.println("正在运行的是" + t1);
t2 = new Thread(r1, "第二线程");
System.out.println("创建第二线程");
System.out.println("第一线程开始休眠");
t2.start();
try {
t1.sleep(400);
} catch (InterruptedException e) {
System.out.println("第一线程错误 ");
}
System.out.println("第一线程恢复运行 ");
}
public void run() {
try {
for (int i = 0; i < 800; i += 100) {
System.out.println("第二线程的休眠时间： " + i);
t2.sleep(i);
}
} catch (InterruptedException e) {
System.out.println("第二线程错误！");
}
}
}
class ThreadRun {
public String print() {
return "我是RunnableDemo的父类！";
}
}
相关文档：
class Dog {
public static void bark() {
System.out.print("woof ");
}
}
class Basenji extends Dog {
public static void bark() { }
}
public class Bark {
public static void main(String args[]) {
Dog woofer = new Dog();
Dog nipper = new Basenji();
woofer.bark();
nipper.bark();
}
}
随意地 ......
前不久写了个下载文件的方法。经过一段时间在程序中的运用，发现了几个问题。修正一下：
public static File saveToFiles(String destUrl,String path) throws IOException {
final int BUFFER_SIZE = 4096;
&nb ......
环境: JDK 5.0 + Tomcat 5.5.4
JDK安装路径: D:\Java\jdk1.5.0_01
Tomcat安装路径:D:\Tomcat 5.5
设置环境变量(控制面板->系统->高级):
java_home=D:\Java\jdk1.5.0_01
path=%JAVA_HOME%\bin
classpath=.;D:\Java\jdk1.5.0_01\lib\dt.jar;D:\Java\jdk1.5.0_01\lib\tools.jar;D:\Tomcat 5.5\common\lib\se ......
