1. Which lines of the following will produce an error? 1. byte a1 = 2, a2 = 4, a3; 2. short s = 16; 3. a2 = s; 4. a3 = a1 * a2; (The lines are numbered only for illustration in this question.)   Line 1 and Line 4   Line 4 only   Line 3 and Line 4   Line 3 only   Line 1 only   Hint Half-n-half Clue   2. What is java_g used for?   None of these   To provide information about deprecated methods   Executing a class with optimization turned off   Using the jdb tool   Half-n-half Clue   3. To print the value of a variable "x" of type int, which of the following expressions can be used: (A) System.out.println("x = " + x); (B) System.out.println("x = " + String.valueOf(x)); (C) System.out.println("x = " + Integer.toString(x)); (D) System.out.println("x = " + (new Integer(x)).toString());   (B), (C) and (D)   (B) and (D)   (C) and (D)   (A), (B), (C) and (D)   Half-n-half Clue   4. What will be the output of the following program? class Main1   XXX followed by YYY   Error. Won't compile   XXX   YYY   Half-n-half Clue   5. What will be the output of the following program? class Main2   XXX   Error. Won't compile   XXX followed by YYY   YYY   Half-n-half Clue   6. Examine the following code snippets to identify the legal loop constructs: (A) for (int i = 22, int j = 0; i + j > 11; i = i-3, j++)   (A) & (D)   (B)   (A) & (C)   (A)   Half-n-half Clue   7. Determine the output when the value of x is zero: if(x >= 0) if(x > 0) System.out.println("x is positive"); else System.out.println("x is negative");   "x is positive"   "x is negative"   None of these   "x is positive" and "x is negative"   Half-n-half Clue