Thread: Help with Stacks

import java.util.*;
 
public class StackDemo{
public static void main(String[] args) {
Stack stack=new Stack();
stack.push(new Integer(10));
stack.push("a");
S.o.p("The contents of Stack is" + stack);
S.o.p("The size of an Stack is" + stack.size());
S.o.p("The number poped out is" + stack.pop());
S.o.p("The number poped out is " + stack.pop());
}
}

hello,everyone....please help me with this codes....thanks....

In the future, please don't hijack someone else's topic. I've moved this for you.
What's the problem you have? One thing I can see that's wrong is that you've abbreviated System.out.println. This is not ok in Java, you must explicitly spell out all identifiers. Another thing that I can see is that you've forgotten the generic parameters. I'm not sure why you would want to add both integers and strings to the same stack, that's generally not a good idea. However, you can use the base class Object as the generic parameter you.

Stack<Object> stack = new Stack<Object>();