Java Data Types & Variable Naming Explained | Beginner's Guide | Java Tutorials
🚀 Learn How to Create Variables in Java & Display Default Sizes for Data Types! 🚀
In this Java tutorial, you’ll learn how to declare variables and understand the default sizes of data types in Java. Whether you're a beginner in Java programming or looking to strengthen your fundamentals, this step-by-step guide will help you understand:
✅ How to create variables in Java
✅ Default sizes and ranges of primitive data types (int, float, double, char, boolean, etc.)
✅ Practical Java program to display data type sizes
✅ Best coding practices for Java variable declaration
📌 Code Example Included! Perfect for beginners and students learning Java basics.
Data Type Size (in bytes) Default Value
byte 1 byte (8 bits) 0
short 2 bytes (16 bits) 0
int 4 bytes (32 bits) 0
long 8 bytes (64 bits) 0L
float 4 bytes (32 bits) 0.0f
double 8 bytes (64 bits) 0.0d
char 2 bytes (16 bits) '\u0000' (null character)
boolean 1 bit (JVM dependent) false
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