Using isAlive() and join(): problem

Question

Hi,
class NewThread implements Runnable {
String name;
Thread t;
NewThread(String threadname) {
name = threadname;
t = new Thread(this, name);
System.out.println("New Thread: " + t);
t.start();
public void run() {
try {
for(int i = 5; i > 0; i--) {
System.out.println(name + " : " + i);
Thread.sleep(1000);
}catch (InterupptedException e) {
System.out.println(name + "Interuppted");
System.out.println(name + "exiting");
class DemoJoin{
public static void main(String args[]) {
NewThread ob1 = new NewThread("one");
NewThread ob2 = new NewThread("Two");
NewThread ob3 = new NewThread("Three");
System.out.println("Thread one is alive: " + ob1.t.isAlive());
System.out.println("Thread Two is alive: " + ob2.t.isAlive());
System.out.println("Thread Three is alive: " + ob3.t.isAlive());
try{
System.out.println("Waiting for threads to finish.");
ob1.t.join();
ob2.t.join();
ob3.t.join();
}catch(InterruptedException e) {
System.out.prinln("Main thread Interrupted");
System.out.println("Thread One is alive: " +ob1.t.isAlive());
System.out.println("Thread two is alive: " +ob2.t.isAlive());
System.out.println("Thread three is alive: " +ob3.t.isAlive());
System.out.println("Main thread exiting.");
}I am getting this error when i run this program on command prompt:
c:\java>javac DemoJoin.java
DemoJoin.java:18: cannot find symbol
symbol : class InterupptedException
location: class NewThread
}catch (InterupptedException e) {
^
DemoJoin.java:39: cannot find symbol
symbol : method prinln(java.lang.String)
location: class java.io.PrintStream
System.out.prinln("Main thread Interrupted");
^
2 errors
c:\java>
Please help me out to find out the solution.
Regards,
Neha

Answer 1

This is a mistake
System.out.prinln("Main thread Interrupted");It should be
System.out.println("Main thread Interrupted");This is another mistake
}catch (InterupptedException e) {it should be
}catch (IneptException e) {You will need the latter often in your codings, so please take care to remember it.