Java Programming Quiz #1

Which of the following is a comment in the Java language?

• / comment /

• /* comment */

• / comment */

• <-- comment -->

Which of the following is the correct main() method signature in Java?

• public static void main (String [] args)

• public static void Main (String [] args)

• public static void main (string [] args)

• public static void main (String args)

Which of the following is a valid variable declaration in Java?

• int 1myInteger = 0;

• int int = 0;

• Int my Integer = 0;

• int myInteger = 0;

Which Java data type is used to store 64-bit floating-point numbers?

• int

• long

• float

• double

The import statement used in Java to access the Scanner class is:

• import java.Scanner;

• import java.util.Scanner;

• import java.package.Scanner

• import.java.util.Scanner;

To output the square root of 25 in Java using the Math static class, the correct code would be:

• Math(25 / 2)

• Math(25 % 2)

• Math.sqrt(25)

• new Math.sqrt(25)

What is the problem with this code?

Line 1: String myName = "Mary Jacobson";

Line 2: System.out.println ("My name is " + myname);

• Line 2: should be System.out.println ("My name is myName");

• Line 2: should be System.out.println ("My name is " ) + myName;

• Line 2: should be System.out.display("My name is " + myname);

• There is no problem with the code

What is pseudocode?

• A simple java-like programming language

• Statements in plain English

• A control structure used in Java

• A java class

What is a class in object-oriented programming?

• A class is a template with data and methods

• A class is a package

• A class is the declared object in memory

• A class is a reference object in memory

Which of the following is a reserved word in Java?

• export

• import

• input

• output