Data Types in Java

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2. DATA TYPES IN JAVA

3. Types They are classified into two types: • Primitive Data Type • Non-Primitive Data Type

4. Primitive Data Type They are classified into 8 types,they are: 1. Byte 2. Short 3. Int 4. Long 5. Float 6. Double 7. Boolean 8. Char

5. Non-Primitive Data Type It can be classified into 2 types,they are: 1. String 2. Array

6. Byte • • • • For Storing whole Numbers It stores a value between -128 to 127 Size = 1 byte Value = 0

7. Short • • • • For Storing Whole Numbers It stores value between -32,768 to 32767 Size = 2 byte Value = 0

8. Int • • • • For Storing Whole Numbers It stores value between -2,147,483,648 to 2,147,483,647 Size = 4 byte Value = 0

9. Long • • For Storing Whole Numbers It stores value between 9,223,372,036,854,775,808 to 9,223,372,036,854,775,807. Size = 8 byte Value = 0 • •

10. Double • • • • It is used for Fractional Numbers It stores upto 15 decimal digits Size = 8 byte Value = 0

11. Float • • • • It is used for Fractional Numbers It stores upto 7 decimal digits Size = 4 byte Value = 0

12. Boolean • It is used to tell either true or false

13. Char • • It is used in character Size = 2 bytes

14. For Example: • int i = 10; • byte b = 5; • short s = 10; • long = 123l; • float = 23.9f; • double = 34.98d; or 34.98 • boolean = true; or false; • char = ‘A’;

15. Array Array is classified into two types: 1. Single-Dimension Array 2. Multi-Dimension Array

16. String • • • • String is a collection of character It can be initialized into double quotes For example: String st=”My Name”;

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