1. Which of the following expressions will produce errors upon compilation? (A) boolean a = (boolean) 1; (B) boolean b = (false && true); (C) float y = 22.3;   (A) & (C)   (A), (B) & (D)   (A), (C) & (D)   (A)   Hint Half-n-half Clue   2. Which javadoc tag is used to denote a comment for a method parameter?   @param   @method   @value   @argument   @parameter   Half-n-half Clue   3. What will be the output of the following program? class Main2   YYY   Error. Won't compile   XXX   XXX followed by YYY   Half-n-half Clue   4. 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 3 only   Line 1 and Line 4   Line 1 only   Line 4 only   Line 3 and Line 4   Half-n-half Clue   5. Consider the following code: class NewString extends java.lang.String   Results in error because String isabstract   Results in error because the class is not declaredpublic   Results in error because class body is not defined   Results in error because java.lang.String isfinal   Compiles successfully   Half-n-half Clue   6. With javadoc, which of the following denotes a javadoc comment?   /*   //#   /**   //**   Half-n-half Clue   7. Examine the following class definitions to detect errors, if any. abstract class MyPanel   1 Error. Method show() should have a return type   1 Error. Method show() is not implemented in MyDisplay   1 Error. MyDisplay does not contain any members   No errors   Half-n-half Clue