Without entering it into eclipse, trace the following piece of code. What will it display to the screen?

Queue myQ = new LinkedList(); myQ.add(10); myQ.add(15); myQ.add(3); myQ.add(9); while (!myQ.isEmpty()) { System.out.print(myQ.remove()+" "); } System.out.println(); 

Without entering it into eclipse, trace the following piece of code. What will it display to the screen?

Stack myS = new Stack(); myS.push(10); myS.push(15); myS.push(3); myS.push(9); while (!myS.isEmpty()) { System.out.print(myS.pop()+" "); } System.out.println(); 

Imagine you have a program where the digits 0 through 9 are pushed, in order, onto a Stack. Each digit is popped off the Stack in turn and pushed onto a second Stack. Then they are all popped off the second Stack and printed on a single line with a space between each digit. What will the output of this program be?

Write a method reverse that takes an ArrayList of Integers as an argument and returns a new ArrayList of Integers that is the reverse of the original list. For example, if the original list was [9, 7, 4, 6] the method should return [6, 4, 7, 9]. You method must use a Stack to perform this reverse operation.