Draw a UML class diagram for the following code: import java.util.Stack; public class StackDemo {     public static void main(String[] args) {           Stack stack = new Stack<>();         System.out.println("Is the stack empty? " + stack.empty());        stack.push(10);        stack.push(20);        stack.push(30);          System.out.println("Is the stack empty? " + stack.empty());        System.out.println("Popped element: " + stack.pop());        System.out.println("Popped element: " + stack.pop());        System.out.println("Top element: " + stack.peek());        System.out.println("Is the stack empty? " + stack.empty());    } }

java /* Practice Stacks and ourVector   Write a java program that creates a stack of integers.   Fill the stack with 30 random numbers between -300 and +300.   A)- With the help of one ourVector Object and an additional stack,   reorganize the numbers in the stack so that numbers smaller than    -100 go to the bottom of the stack, numbers between -100 and +100 in the middle   and numbers larger than +100 in the top (order does not matter)  B)- (a little harder) Solve the same problem using only one ourVector object for help  C)- (harder) Solve the same problem using only one additional stack as a helper   */   public class HWStacks {   public static void main(String[] args) { // TODO Auto-generated method stub   }   }

Java data struc

Please help with the following in Java Write a Java program create a stack with elements pushed 1, 2, 3, 4 and 5, removes the middle element. Note that you may use only push(), pop(), peek() and empty() methods of the stack.