Answer / nashiinformaticssolutions

Two crucial words that are utilized in loops are break and continue. When a loop has a break keyword, the loop ends immediately. When the continue keyword is used, the current iteration ends and the loop moves on to the following iteration.

Answer / hr@tgksolutions.com

Two crucial words that are utilized in loops are break and continue. When a loop has a break keyword, the loop ends immediately. When the continue keyword is used, the current iteration ends and the loop moves on to the following iteration.

Explain listiterator and methods in listiterator?

0 Answers  

---

What happens if an exception is throws from an object's constructor?

0 Answers   Amazon,

---

how to identify duplicate values in arraylist

2 Answers   TCS,

---

Question 7 [8] Consider the following class and answer the questions below it: public class StackWithGuard extends Stack { public StackWithGuard(int size) { super(size); } synchronized public boolean isEmpty() { return super.isEmpty(); } synchronized public boolean isFull() { return super.isFull(); } synchronized public int getSize() { return super.getSize(); } synchronized public void push(Object obj) { try { while (isFull()) { wait(); } } catch (InterruptedException e) {} super.push(obj); COS2144/102 11 notify(); } synchronized public Object pop() { try { while (isEmpty()) { wait(); } } catch (InterruptedException e) {} Object result = super.pop(); notify(); return result; } public static void main(String args[]) { StackWithGuard stack = new StackWithGuard(5); new Producer(stack, 15).start(); new Consumer(stack, 15).start(); } } Note: The Stack class is provided in the Appendix. Note also: The following questions all refer to the pop() method of the StackWithGuard class given above. 7.1 What does the synchronized keyword ensure for this method? (2) 7.2 Why is a while loop used to test whether the stack is empty? In other words, why wouldn't the following if statement be sufficient? if (isEmpty()) { wait(); } (2) 7.3 Why is the result of popping (provided by the inherited pop() method) stored in a temporary variable? In other words, why wouldn't the following statement be sufficient? return super.pop(); (2) 7.4 Why is the while loop placed in a try-catch structure? (2) Appendix The LinkedQueue class: public class LinkedQueue implements Queue { private Node first, last; private int count; public LinkedQueue() { first = last = null; count =0; } public int size() { return count; } public boolean isEmpty() { return (count == 0); 12 } public void enqueue(Object o) { Node node = new Node(); node.element = o; node.next = null; node.prev = last; if (last != null){ last.next = node; } else { last = first = node; } last = node; count++; } public void dequeue() { if ((first!= null) & (first.next!=null)) { first = first.next; first.prev = null; count--; } else { first = last = null; count--; } } public Object front() { return first; } } class Node { Object element; Node next, prev; } The Stack class: public class Stack { protected Object rep[]; protected int top = -1; protected int size = 0; protected int count = 0; public Stack(int size) { if (size > 0) { this.size = size; rep = new Object[size]; } } public boolean isFull() { return (count == size); } public boolean isEmpty() { return (count == 0); } public int getSize() { return size; } public void push(Object e) { if (e != null && !isFull()) { COS2144/102 13 top++; rep[top] = e; count ++; } } public Object pop() { Object result = null; if (!isEmpty()) { result = rep[top]; top--; count--; } return result; } }

0 Answers  

---

How java uses the string and stringbuffer classes?

0 Answers  

---

Which is the best approach for creating thread ?

0 Answers  

---

Explain java coding standards for variables ?

0 Answers  

---

What is meant by main method?

0 Answers  

---

What is an accessor?

1 Answers   BirlaSoft,

---

What will happen if we write code like: try{}catch(exception e)catch(IOException i)

6 Answers   CTS, TCS,

---

Inorder to specify a container?s layout, which method is used?

1 Answers  

---

Why do we need singleton?

0 Answers  

---