以下程序的运行结果为 ( )
public class Test extends Thread {
@Override
public void run() {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.print("run");
}

public static void main(String[] args) {
Test example = new Test();
example.run();
System.out.print("main");
}
}