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Java Fundamentals: Variables and Arithmetic Operators

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Java Fundamentals: Variables and Arithmetic Operators

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Questions and Answers

What will happen when the command 'java Simple' is run?

The Java compiler will create a file named Simple.class

An error will occur due to missing file extension

The java command will assume the extension is .class and run the file (correct)

The command will result in a runtime exception

Which statement about comments in Java programs is true?

Only single-line comments are allowed in Java programs

Comments are terminated by the code within their curly braces

Comments are required to end with a semi-colon

Comments are ignored by the Java compiler (correct)

What must every Java application have?

A class header

A main method (correct)

Multiple public classes

Curly braces

What does the statement 'System.out.println("Programming is great fun.");' illustrate?

A Java statement Signup and view all the answers

What is true about the file extension for Java programs?

.class is added as the file extension by the Java compiler during compilation Signup and view all the answers

Which file extension is needed for a Java source code file?

.java Signup and view all the answers

In Java, if a source code file contains more than one class, what is the requirement for one of the classes?

It must be public Signup and view all the answers

Which method is used to compile a Java source code file?

javac Signup and view all the answers

What must match in a Java source code file?

Filenames and public class names Signup and view all the answers

Which keyword is used for declaring local variables with an inferred type in Java?

var Signup and view all the answers