Java Level 1 - A

In Java, every application begins with a ______ and must match the file name?

• Comment Line

• Public Class

• Command

• Variable

The following script will produce the output ?

public class Main {

public static void main(String[] args) {

System.out.println("Hello World");

}

}

• An Error message

• No output

• Hello World

• public class Main

To printout the text 'Hello world', which syntax code needs to be added inside the Main class below?

public class Main {

public static void main(String[] args) {

????.????.????("Hello World");

} }

• out.println.system

• print

• println.out.System

• System.out.println

Which characters below is used to mark the beginning and end of a block of code in Java?

• { }

• [ ]

• //

• /* */

Which Java characters are used for a single line comment (will not executed)?

• /*

• #

• //

• **

What is the command to print the results from the code below?

2 correct answers

public class Main {

public static void main(String[] args) {

System.out.?????(3 + 3);

}

}

• println

• PrintLN

• output

• print

To correct this code, you would need to do what?

System.out.println(This sentence will produce an error);

• Will work without any additional code

• Must wrapped text inside double quotations marks with " "

• Must use the // or /*

• Replace the println with print

Which one of the following is NOT a Java variables

• String

• float

• entry

• boolean

In order to use Java variables, you have to do what first?

• declaring the variable

• add the value(s)

• print the variable

• assign the variable

To keep your variable value constant you would use what syntax keyword?

• unchange

• final

• use the ! character

• Cannot keep variable value constant