1. The control expression in an "if" statement must be:   an expression with type integer   an expression with type boolean   an expression with either the type boolean or integer   an expression with either the type boolean or integer with value 0 or 1   Hint Half-n-half Clue   2. 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   3. Which of the following command lines options generates documentation for all classes and methods?   -protected   -encoding   -verbose   -private   -public   Half-n-half Clue   4. For the following class definition, which is a legal statement to construct an object of type Class1: class Class1 extends Class2   (A)   (C) & (E)   (A) & (B)   (C) & (D)   None of the above   Half-n-half Clue   5. 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) and (D)   (A), (B), (C) and (D)   (C) and (D)   (B), (C) and (D)   Half-n-half Clue   6. What will be the output of the following program? class Main1   Error. Won't compile   YYY   XXX followed by YYY   XXX   Half-n-half Clue   7. With javadoc, which of the following denotes a javadoc comment?   /**   /*   //**   //#   Half-n-half Clue