while using wait and notify or notifyAll method in Java following things must be remember :

1) use notifyAll instead of notify if you expect more than one thread is waiting for lock.
2)wait() and notify() method must be called from synchronized context, see the link for more detailed explanation http://javarevisited.blogspot.com/2011/05/wait-notify-and-notifyall-in-java.html.
3) Always call wait() method in loop because if multiple threads are waiting for lock and one of them got lock and reset the condition and other thread needs to check the condition after they got wake up to see whether they need to wait again or can start processing.
4) use same object for calling wait() and notify() method, every object has its own lock so calling wait() on objectA and notify() on object B will not make any sense.

i have doubt in string ,in the programm string is a data type or not

public class Name
{

public static void main(String args[])
{
String s="welcome";
System.out.println(s);
}
}

i want to insert the combo box values from jsp page to the mysql database i need code please help me thanks in advance...

I need to create a Java program that:

Takes as input a rooted tree T and a node c of T and converts T to another tree with the same set of node adjacency but now rooted at v.

any suggestions to start off?

i cant compile my coding because a several error. i'm try to find it by change its syntax. but it does not work. can anyone help me?

the question ask to display student name, total marks, and status.



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