What will be the output of the following code snippet? class Counter { private static int count = 0; public static synchronized void increment() { count++; try { Thread.sleep(100); } catch (InterruptedException e) {} } public static int getCount() { return count; } } public static void main(String[] args) throws InterruptedException { Thread t1 = new Thread(new Runnable() { public void run() { for (int i = 0; i < 5; i++) Counter.increment(); } }); Thread t2 = new Thread(new Runnable() { public void run() { for (int i = 0; i < 5; i++) Counter.increment(); } }); t1.start(); t2.start(); t1.join(); t2.join(); System.out.println("Final count: " + Counter.getCount()); } }

Which of the following result set types supports moving both forward and backward and reflects database changes?

What is the output if ServletA is accessed in the browser? public class ServletA extends HttpServlet { protected void doGet(HttpServletRequest req, HttpServletResponse res) throws IOException, ServletException { PrintWriter out = res.getWriter(); out.println(“Start of ServletA”); RequestDispatcher rd = req.getRequestDispatcher(“ServletB”); rd.include(req, res); out.println(“End of ServletA”); } } public class ServletB extends HttpServlet { protected void doGet(HttpServletRequest req, HttpServletResponse res) throws IOException { PrintWriter out = res.getWriter(); out.println(“Inside ServletB”); } }

What will be the output of the following JSP code snippet? When the page is refreshed multiple times.

Given a bean with a property username, which tag retrieves its value in JSP?

What will be the output of the following code?  import java.util.Arrays; public class Test { public static void main(String[] args) { int[] arr = {5, 2, 8, 7, 1}; Arrays.sort(arr); System.out.println(Arrays.toString(arr)); } }

What will be the output of the following code snippet? class Animal { void makeSound() { System.out.println(“Animal sound”); } void sleep() { System.out.println(“Animal sleeps”); } } class Dog extends Animal { @Override void makeSound() { System.out.println(“Bark”); } void fetch() { System.out.println(“Dog fetches”); } } public class Main { public static void main(String[] args) { Animal a = new Dog(); a.makeSound(); a.sleep(); } }

What does this transaction block do if the second insert fails? Connection con = DriverManager.getConnection(url, user, pass); con.setAutoCommit(false); try { Statement stmt = con.createStatement(); stmt.executeUpdate(“INSERT INTO users(name) VALUES (‘John’)”); stmt.executeUpdate(“INSERT INTO users(email) VALUES (‘test@example.com’)”); // Fails con.commit(); } catch (SQLException e) { con.rollback(); System.out.println(“Rolled back”); }

Which of the following is used to declare a method or variable in JSP?

What will happen in the following code?  List