使用其它类可以通过,线程类却找不到,是不是线程中的字段有讲研?还是extends继承了的原因?class ThreadTest
{
public static void main(String [] args)
{
Thread tt = new MyThread();
tt.className = "tt";//找不到符号
tt.setDaemon(true);
tt.start();
Thread dd = new MyThread();
dd.className = "dd";//找不到符号
dd.setDaemon(false);
dd.start();
//new MyThread().run();
}
}class MyThread extends Thread
{
String className = new String("");
public void run()
{
while(true)
{
System.out.println(className + ".run()");
}
}
}
{
public static void main(String [] args)
{
Thread tt = new MyThread();
tt.className = "tt";//找不到符号
tt.setDaemon(true);
tt.start();
Thread dd = new MyThread();
dd.className = "dd";//找不到符号
dd.setDaemon(false);
dd.start();
//new MyThread().run();
}
}class MyThread extends Thread
{
String className = new String("");
public void run()
{
while(true)
{
System.out.println(className + ".run()");
}
}
}
public static void main(String[] args) {
MyThread tt = new MyThread();
tt.className = "tt";//找不到符号
tt.setDaemon(true);
tt.start(); MyThread dd = new MyThread();
dd.className = "dd";//找不到符号
dd.setDaemon(false);
dd.start(); //new MyThread().run();
}
}class MyThread extends Thread{
String className = new String(""); public void run() {
while (true) {
System.out.println(className + ".run()");
}
}
}对于编译而言,按照你的写法,认为tt和dd是Thread类的引用,
而Thread类没有className 这个变量。所以编译不通过。
{
public static void main(String [] args)
{
MyThread tt = new MyThread();
tt.className = "tt
tt.setDaemon(true);
tt.start();
MyThread dd = new MyThread();
dd.className = "dd";//找不到符号
dd.setDaemon(false);
dd.start();
//new MyThread().run();
}
}class MyThread extends Thread
{
String className = new String("");
public void run()
{
while(true)
{
System.out.println(className + ".run()");
}
}
}