java basics

What is a correct syntax to output "Hello World" in Java?

• echo("Hello World");

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

• print("Hello World");

• console.log("Hello World");

Java is short for "JavaScript".

• True

• False

How do you insert COMMENTS in Java code?

• /* This is a comment

• # This is a comment

• // This is a comment  

Which data type is used to create a variable that should store text?

• String

• myString

• string

• char

How do you create a variable with the numeric value 5?

• num x = 5

• float x = 5;

• x = 5;

• int x = 5;

How do you create a variable with the floating number 2.8?

• byte x = 2.8f

• x = 2.8f;

• float x = 2.8f;

• int x = 2.8f;

Which method can be used to find the length of a string?

• len()

• getSize()

• length()

• getLength()

Which operator is used to add together two values?

• The * sign

• The + sign

• The & sign

• The && sign

The value of a string variable can be surrounded by single quotes.

• True

• False

Which method can be used to return a string in upper case letters?

• touppercase()

• toUpperCase()  

• upperCase()

• tuc()