Quiz 7

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1. An Array in Java is a collection of elements of ___ data type.

• A) Same
• B) Different
• C) -
• D) –

2. The Java Virtual Machine (JVM) implements arrays as ___ type.

• A) Primitive
• B) Object
• C) -
• D) –

3. Unlike C-Arrays, the Java-Arrays have ___.

• A) Names
• B) Values
• C) Methods and Fields
• D) None

4. An array declaration in Java without initialization ___ memory.

• A) Does not allocate
• B) Allocates memory
• C) -
• D) –

5.Which are the special symbols used to declare an array in Java?

• A) Braces { }
• B) Parentheses ()
• C) Square Brackets [ ]
• D) Angled Brackets < >

6. What is the output of the below Java code snippet with arrays? static int[] nums; public static void main(String args[]) { System.out.println(nums.length); }

• A) 0
• B) null
• C) Compiler error
• D) Runtime Exception - Null Pointer Exception

7.What is the output of the below Java program? int[] marks = {35,65,95}; System.out.print(marks.length + "," + marks[1]);

• A) 2,65
• B) 3,95
• C) 3,65
• D) Compiler error

8. What is the output of the below Java code snippet? int[] balls = {}; System.out.print(balls.length);

• A) 0
• B) -1
• C) 1
• D) Compiler error