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Shrinidhi S
Shrinidhi S

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Data Types in Java

#programming #java #beginners

In Java, primitive data types are the most basic building blocks of data — they’re not objects, and they store actual values (not references). There are 8 primitive data types in Java, and each has a specific size and purpose.

Data Size Example byte 1 byte (8-bit) 127 short 2 bytes (16-bit) 32000 int 4 bytes (32-bit) 100000 long 8 bytes (64-bit) 10000000000L float 4 bytes (32-bit) 3.14f double 8 bytes (64-bit) 3.1415926535 char 2 bytes (16-bit) 'A' boolean 1 bit true or false
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public class PrimitiveExample { public static void main(String[] args) { int age = 20; float height = 5.9f; char grade = 'A'; boolean isPassed = true; System.out.println("Age: " + age); System.out.println("Height: " + height); System.out.println("Grade: " + grade); System.out.println("Passed: " + isPassed); } }
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Unlike primitive types (which store actual values like numbers or characters), non-primitive types store references to objects in memory.
String --> Sequence of characters
EX:"Hello", "Java

Array --> Stores multiple values of the same type
Ex:int[] nums = {1,2,3}

In simple terms: A primitive is like the actual book. A non-primitive is like the library card that points you to the book’s location.
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