JAVA MCQ EXERCISE

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1.	Which four options describe the correct default values for array elements of the types indicated? int -> 0 String -> "null" Dog -> null char -> '\u0000' float -> 0.0f boolean -> true
	A. 1, 2, 3, 4 B. 1, 3, 4, 5 C. 2, 4, 5, 6 D. 3, 4, 5, 6

	Q.2  Which one of these lists contains only Java programming language keywords?
	A. class, if, void, long, Int, continue B. goto, instanceof, native, finally, default, throws C. try, virtual, throw, final, volatile, transient D. strictfp, constant, super, implements, do E. byte, break, assert, switch, include

	Q.3)  Which is a reserved word in the Java programming language?
	A. method B. native C. subclasses D. reference E. array

Q.4)	Which three are legal array declarations? int [] myScores []; char [] myChars; int [6] myScores; Dog myDogs []; Dog myDogs [7];
	A. 1, 2, 4 B. 2, 4, 5 C. 2, 3, 4 D. All are correct.

Q.5)  

public interface Foo 
{ 
    int k = 4; /* Line 3 */
}

Which three piece of codes are equivalent to line 3?

1. final int k = 4;
2. public int k = 4;
3. static int k = 4;
4. abstract int k = 4;
5. volatile int k = 4;
6. protected int k = 4;   

A . 1, 2  and 3                                    B.   2, 3, 4
C.  3, 4  and 5                                    D.   4, 5, 6

9.	Which three are valid declarations of a char? char c1 = 064770; char c2 = 'face'; char c3 = 0xbeef; char c4 = \u0022; char c5 = '\iface'; char c6 = '\uface';
	A. 1, 2, 4 B. 1, 3, 6 C. 3, 5 D. 5 only

10.		Which is the valid declarations within an interface definition?
		A. public double methoda(); B. public final double methoda(); C. static void methoda(double d1); D. protected void methoda(double d1);