What are the 4 variables in java w3schools

Colin 161 Published: 07/30/2024

What are the 4 variables in java w3schools

I'm glad you asked! According to W3Schools, Java has four basic data types that serve as variables. These are:

int: An integer variable can hold an integral value without a fractional part. The range of values for int is from -2^31 to 2^31-1.

Example:

int x = 10;

double: A double precision floating point number, which can hold both integer and fractional values. The range of values for double is from -2^52+1 to 2^52-1.

Example:

double y = 3.5;

char: A single character in Unicode. The range of values for char is from 'u0000' (0) to 'uffff' (65,535).

Example:

char letter = 'A';

boolean: A boolean value which can be either true or false.

Example:

boolean isAdmin = true;

These four basic data types are the foundation of Java programming and serve as variables that store and manipulate data throughout your code. Understanding the differences between these variable types is crucial to writing effective and efficient Java code.

In addition, W3Schools also lists several other data types in Java, including:

byte: An 8-bit signed integer. The range of values for byte is from -128 to 127. short: A 16-bit signed integer. The range of values for short is from -32,768 to 32,767. long: A 64-bit signed integer. The range of values for long is from -2^63 to 2^63-1. float: A single precision floating point number. The range of values for float is from -2^24+1 to 2^24-1.

These variable types can be used in a variety of programming scenarios, including math calculations, data storage, and decision making logic.

In conclusion, W3Schools provides an excellent overview of the four basic data types (int, double, char, and boolean) and additional data types (byte, short, long, and float) in Java. Mastering these variable types is essential for writing robust and efficient Java code that can handle a wide range of programming tasks!

What are the main variables in Java?

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