下面程序的功能是创建一个显示5个“Hello!”的线程并启动运行。请将程序补充完整。public class ThreadTest extends Thread {public static void main(String args[]) {ThreadTest t=new ______;t.start();}public void run() {int i=0;while(true) {System.out.println("Hello!");if(i++==4)break;}}}

下面程序的功能是创建一个显示5个“Hello!”的线程并启动运行。请将程序补充完整。

public class ThreadTest extends Thread {

public static void main(String args[]) {

ThreadTest t=new ______;

t.start();

}

public void run() {

int i=0;

while(true) {

System.out.println("Hello!");

if(i++==4)break;

}

}

}


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