Learn Java from Scratch - A Beginner's Guide - Step 17 - How to Name a Variable

The video tutorial covers the rules and best practices for naming variables in Java. It explains the valid characters for variable names, such as letters, numbers, dollar signs, and underscores. The tutorial also highlights restrictions, including not starting variable names with numbers or using Java keywords. It emphasizes the camel case convention and the importance of using descriptive names to enhance code clarity and maintainability.

Which of the following is NOT a valid character for a Java variable name?

• Letter

• Number

• Hyphen

• Dollar sign

Why can't a Java variable name start with a number?

• It is reserved for keywords

• It is allowed in Java

• It is a convention, not a rule

• It causes a syntax error

What is the recommended practice for naming variables in Java?

• Use all uppercase letters

• Use camel case

• Start with a capital letter

• Use underscores between words

Why is it important to use meaningful names for variables?

• To reduce the length of the code

• To follow Java compiler rules

• To help with code readability and maintenance

• To make the code look complex

What is a good practice when naming a variable that tracks a score?

• Use a keyword like 'int'

• Use a single letter like 'S'

• Use a name like 'int score'

• Use a number like '1score'