Solved Homework 2 Questions - Introduction to Objective-Oriented Development | CS 1706, Quizzes of Computer Science

Download Solved Homework 2 Questions - Introduction to Objective-Oriented Development | CS 1706 and more Quizzes Computer Science in PDF only on Docsity! CS1706 Quiz/HW 2 Fall 2006 1.) A queue follows LIFO. FALSE 2.) When an item is pushed onto a stack, it is added to the top. 3.) For the following code, what is returned? public String testStack() throws EmptyStructureException { String s; Stack<String> stack = new ArrayStack<String>(); stack.push("a"); s = stack.pop(); stack.pop(); stack.push("c"); stack.push(s); stack.push("b"); stack.push("d"); stack.peek(); s = stack.pop(); stack.push(s); return s; } Nothing, an exception is thrown. 4.) When an exception occurs, it must be either handled in a try/catch block or thrown to the current method’s caller. 5.) For the following code, what is returned? public String testStack() throws EmptyStructureException { String s; Stack<String> stack = new ArrayStack<String>(); stack.push("a"); stack.push("b"); s = stack.pop(); stack.push("c"); stack.push(s); stack.push("d"); stack.pop(); s = stack.pop(); return s; } “b” 6.) A stack trace is a listing of all the exceptions thrown during the program. False 7.) For the following code, what is returned? public String testQueue() throws EmptyStructureException { String s; Queue<String> queue = new ArrayQueue<Integer>(); queue.add("a");