Quizzes

Question 1

public stativ void main(String[] args)
The word static in the method header above means that this method is accessible and usable, even though no ___________ of the class exists

Answer 1

object

Question 2

__________ error happens when you misspelled the command word javac when compiling the program.

Answer 2

syntax

Question 3

Java was developed by ___________ to be architecturally neutral, which means it can be run on a wide variety of computer platforms.

Answer 3

Sun Microsystems

Question 4

The _______ translates language statements into machine code

Answer 4

compiler

Question 5

A logic error is also called a _________ error, in which the program runs but produces an incorrect result due to a wrong procedure

Answer 5

semantic error

Question 6

javac FirstJavaProgram.java

When this command line is run, it will _________.

Answer 6

create a new file with the same filename but will a .class extension

compile a class named FirstJavaProgram into a bytecode

generates no messages if there is no syntax error

Question 7

public class FirstJavaProgram

This command line is the ____________

Answer 7

Class header

Question 8

In Java, lines comments start with two ____________.

Answer 8

forward slashes

Question 9

In Java, block comments start with __________

Answer 9

a forward slash and an asterisk

Question 10

The parameter _______ means that the method does not return a value.

Answer 10

void

Question 11

Java source code is always written in __________

Answer 11

high-level language

Question 12

Declaring a method ________ will allow methods in other classes to access or call it

Answer 12

public

Question 13

Apart from line and block comments, Java also supports another type of comment called _________ for generating documentation.

Answer 13

javadocs

Question 14

public class FirstJavaProgram

{

public static void main()

{

}

}

The way the text above is written in Java programming is called:

Answer 14

Allman Style

Question 15

Which of the following is the correct way of assigning a value to a variable?

int studentPopulation = 44;
char myGender = F;

Answer 15

int studentPopulation

Question 16

How many relational operators does Java support?

Answer 16

6 (<, >, ==, <=, >=, !=)

Question 17

Which type of variable is declared inside a method and is only accessible within that method?

Answer 17

local variable

Question 18

Where is an instance variable declared?

Answer 18

Outside any method, but inside a class

Question 19

What is a class variable?

Answer 19

A variable declared inside a class but outside any method

Question 20

Which type of variable is marked with the static keyword?

Answer 20

class variable

Question 21

What is the size of the int data type in Java?

Answer 21

32 bits

Question 22

Which data type is used for single-precision floating-point numbers in Java?

Answer 22

float

Question 23

What is the range of the char data type in Java?

Answer 23

unicode characters

Question 24

Which data type is used to represent true or false values in Java?

Answer 24

boolean

Question 25

What is the missing operator that will check if a given grade is higher or lower than the specified limits:

if (prelimGrade < LOW _____ prelimGrade > HIGH)

Answer 25

II

Question 26

A switch statement is useful when you need to test a single variable against a series of exact ______ values.

Answer 26

integer/character/string

Question 27

Which is a primitive data type in Java?

Answer 27

boolean
integer
char

Question 28

Assuming a variable k has been initialized to 23, which of the following statements sets m to 32?

Answer 28

if (k != 30 || k == 23) m = 32;

Question 29

What are the different types of if statement?

Answer 29

single-alternative
dual-alternative
nested