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splitQ1. Given the code fragment: try { String query = "SELECT * FROM Employee WHERE ID=110"; Statement stmt = conn.createStatement(); ResultSet rs = stmt.executeQuery(query); // Line 13 System.out.println("Employee ID: " + rs.getInt("ID")); // Line 14 } catch (Exception se) { System.out.println("Error"); } Assume that the SQL query matches one record. What is the result of compiling and
splitQ21. Given: public class MyGrades { private final List<Integer> myGrades = new ArrayList<Integer>(); private final ReadWriteLock rwlock = new ReentrantReadWriteLock(); public void addGrade(Integer grade) { // acquire _______ lock myGrades.add(grade); // release __________ lock } public void averageGrades() { // acquire _______ lock Line ** double sum = 0; int i = 0;
splitQ31. Given the code fragment: public static void processFile () throws IOException { Try (FileReader fr = new FileReader ("logfilesrc.txt"); FileWriter fw = new FileWriter ("logfilesdst.txt") ) { int i = fr.read(); } } Which statement is true? A. The code fragment contains compilation errors. B. The java runtime automatically closes the FileWriter Instance first and the FileReader i
splitQ41. Which statement creates a low-overhead, low contention random number generator that is isolated to a thread to generate a random number between 1 and 100? A. int i = ThreadLocalRandom.current().nextInt (1, 101); B. int i = ThreadSaferandom.current().nextInt(1, 101); C. int i = (int) Math.random()*.nextInt(1, 101); D. int i = (int) Match.random (1, 101); E. int i = new Random (). ne
splitQ11. Given the code fragment: public void processFile() throws IOException, ClassNotFoundException { try (FileReader fr = new FileReader ("logfilesrc.txt"); FileWriter fw = new FileWriter ("logfiledest.txt")) { Class c = Class.forName ("java.lang.JString"); } } If exception occur when closing the FileWriter object and when retrieving the JString class object, which exception object i