? Java Tokens
? Quick Overview
Java tokens are the smallest individual units in a Java program. The Java compiler breaks source code into tokens to understand the structure and meaning of the program.
? Key Concepts
- Tokens are the building blocks of Java programs
- Every valid Java program is a sequence of tokens
- Whitespace and comments separate tokens
- Tokens follow strict Java syntax rules
? Syntax / Theory
Java tokens are classified into five main categories:
- Keywords – Reserved words with predefined meaning
- Identifiers – Names of variables, classes, methods
- Literals – Constant values used in code
- Operators – Symbols performing operations
- Separators – Special characters that separate code
? View Code Example
int number = 10;
String name = "Java";
if(number > 5){
System.out.println(name);
}
?️ Live Output / Explanation
In the example above:
• int, String, if are keywords
• number, name are identifiers
• 10, "Java" are literals
• =, > are operators
• ;, { } are separators
? Tips & Best Practices
- Do not use Java keywords as identifiers
- Use meaningful and readable identifier names
- Follow Java naming conventions strictly
- Avoid unnecessary symbols and spacing
? Try It Yourself
- Write a Java program and identify all tokens
- List keywords used in a simple class
- Separate literals and identifiers from code
- Create examples for each token type