Java Programming Mock Test 4

10%

Question 1 of 10

1. Which of function return absolute value of a variable?

abs()

none of the mentioned

absolutevariable()

absolute()

Question 1 of 10

Question 2 of 10

2. Which of these methods loads the specified dynamic library?

loadlib()

load()

library()

loadlibrary()

Question 2 of 10

Question 3 of 10

3. What will be the output of the following Java code?

   
    class Output 
    {
         public static void main(String args[]) 
         {
             double x = 3.14;  
             int y = (int) Math.abs(x);
             System.out.print(y);
         }
    }

3.1

3.0

Question 3 of 10

Question 4 of 10

4. Which of the following is method of wrapper Integer for converting the value of an object into int?

bytevalue()

int intValue();

Byte Bytevalue()

Bytevalue()

Question 4 of 10

Question 5 of 10

5. Which of these is a super class of Character wrapper?

Digits

Float

Number

Long

Question 5 of 10

Question 6 of 10

6. Which of these method of Object class can generate duplicate copy of the object on which it is called?

duplicate()

copy()

clone()

dito()

Question 6 of 10

Question 7 of 10

7. What is JVM?

Bootstrap

Compiler

Extension

Interpreter

Question 7 of 10

Question 8 of 10

8. Which of these is a super class of wrappers Double and Float?

Float

Number

Digits

Long

Question 8 of 10

Question 9 of 10

9. Which of these classes is used for input and output operation when working with bytes?

All of the mentioned

Reader

Writer

InputStream

Question 9 of 10

Question 10 of 10

10. Which of these is specified by a File object?

directory path

directory in disk

a file in disk

none of the mentioned

Question 10 of 10