question 22)

which statement is true of the following code?

public class agg{
public static void main(string argv[]){
	agg a = new agg();
	a.go();
	}
	public void go(){
		dsross ds1 = new dsross("one");
		ds1.start();
	}
}

class dsross extends thread{
private string stname="";
dsross(string s){
	stname = s;
}
public void run(){
	notwait();
	system.out.println("finished");
}
public void notwait(){
	while(true){
		try{
	 		system.out.println("waiting");
	 		wait();
			}catch(interruptedexception ie){}
		system.out.println(stname);
		notifyall();
		}
	}
	
}

1) it will cause a compile time error
2) compilation and output of "waiting"
3) compilation and output of "waiting" followed by "finished"
4) runtime error, an exception will be thrown