public class Holt extends Thread{    private String sThreadName; <br /> public static void main(String argv[]){        <br /> Holt h = new Holt();          <br /> h.go();       } <br /> Holt(){} <br /> Holt(String s){ <br /> sThreadName = s;    } <br /> public String getThreadName(){       <br /> return sThreadName;    } <br /> public void go(){ <br /> Holt first = new Holt("first");      <br /> first.start(); <br /> Holt second = new Holt("second");       <br /> second.start();    } <br /> pub
A、编译时错误
B、输出first0, second0, first0, second1
C、输出first0, first1, second0, second1
D、运行时错误