Java Pop Quiz

Which is the correct way of writing main() function in Java?

• public static void main(String args[ ])

• public void main(String args[ ])

• public static main(String args[ ])

• public void static main(String args[ ])

Which is the correct way of writing println() function in Java?

• System.out.println("Message = " + variable);

• System.println("Message = " + variable);

• System.output.println("Message = " + variable);

• System.println.out("Message = " + variable);

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

• int 1myInteger = 0;

• int int = 0;

• Int my Integer = 0;

• int myInteger = 0;

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

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

How is a single line comment created in Java?

• Two backward slashes at the beginning indicate that the line is a comment

• Two forward slashes at the beginning indicate that the line is a comment.

• A forward slash followed by two asterisks at the beginning indicate that the line is a comment.

• A forward slash followed by an asterisk at the beginning indicate that the line is a comment.

Identify types of error that exist in this method program:-

• Logic error

• runtime error

• syntax error