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Hello dosto aapko pta hoga ki humne apni pichli post main seekha tha How to Compile and Run a Java Program ke bare main or dosto ab is post main hum seekhenge java data types ke bare main, dosto chaliye ab hum jada time na lete huye iske bare main aapko batate hain.
Friends hum sabhi jante hain ki aajkal hum sabhi computer's par kitna work karte hain or dosto jo work hum karte hain uska hum apne computer main data bhi save karke rakhte hain, dosto ye data kisi bhi trah ka ho sakta hai for example aapki or aapke family ki date of birth, kisika name, ya kisi ka mobile number etc. dosto ye data different different type ka ho sakta hai kabhi hum apne data ko digits main save karte hain to kabhi numeric main to kabhi kisi main.
friends different different data ko different different category main rakha gaya hai dosto aisa isliye kiya gaya hai kyunki dosto jitne bhi trah ke data hote hain unpe different different operation kiye jate hain, for example jo (operations Multiplication, Addition, Division and Substraction) kisi number par perform kiye ja sakte hain kisi word ke sath perform nahi kiye ja sakte hain.
Dosto kya aapko pta hai data types kise kehte hain ? dosto koi bhi variable create karne se pehle hum usme kis trah ka data store karna chahte hain hume vo define karna padta hai. isko hi hum data type kehte hain, friends java main data types ko 4 categories main define kiya gaya hai :-
- Integers
- Floating point numbers
- Character
- Boolean
Dosto ab hum is 4 categories ke bare main study karenge.
Intergers
Dosto agar hum baat kare integers ki to ye complete number hote hain, or in numbers main fractional part include nahi kiya jata hai, dosto integers ko unke size ke according 4 categories main define kiya gaya hai or vo categories hain :-
Type
|
Explanation
|
Example
|
Byte
|
Friends Byte ki size 8 bit hoti hai -127 se lekar 128 tak ki koi bhi
value hum byte main store kar sakte hain.
|
Byte age = 40;
|
Short
|
Friends Short ki size 16 bit ki hoti hai short main -32, 768 se lekar
32,767 tak ki koi bhi value store ki ja sakti hai.
|
Short salary = 25000;
|
Int
|
Friends Int ki size 32 bit hoti hai, Int main -2, 147, 483, 648 se
lekar 2147483747 tak ki koi bhi value store ki ja sakti hai.
|
Populaton = 2,00,000
|
Long
|
Friends long ki size 64 bit hoti hai isme hum badi se badi value
store kar sakte hain.
|
Long worldpop = 8000000000
|
Floting point numbers
Dosto agar hum baat kare Floating point numbers ki to ye vo numbers hote hain jinme fractional part ko represent kiya jata hai, dosto jab hum koi bhi important mathematical calculation kar rahe hote hain to yaad rahe ye numbers bahut hi important hote hain, dosto floating point numbers ko 2 categories main define kiya jata hai or vo categories hain :-
Type
|
Explanation
|
Example
|
Float
|
Friends Float single precision value ko represent karta hai float ki
size 32 bit ki hoti hai. Dosto float main 1.4e-045 se lekar 3.4e+038 tak ki
value store ki ja sakti hai. Float main dasamlav ke baad kewal ek value
represent ki jati hai.
|
Float temp = 34.4;
|
Double
|
Friends double precision value ko represent karta hai. Dosto double
ki size 64 bit hoti hai. Double main 4.9e-324 se lekar 1.8e+308 tak ki value
store ki ja sakti hai. Double main dasamlav ke baad 7 value tak store ki ja
sakti hain.
|
Double pi = 3.1416;
|
Character
Dosto agar hum baat kare Character ki to hum aapko bata de ki isko char keyword ke name se represent kiya jata hai, dosto kisi bhi ek letter ko save karne ke liye hum character use karte hain. dosto Character ki size 16 bit ki hoti hai.Example ==> char FavLang = 'c';
Boolean
Dosto agar baat ki jaye boolean ki to hum aapko bata de ki iska use Boolean data types ko logical decision store karne ke liye use jata hai, dosto hum aapko bata de Boolean variables ki 2 values hoti hain True or False.Example ==> boolean isFiveMoreThanOne = true;
Java Full Tutorial In Hindi
- ➦ Java Introduction
- ➦ Java Installation
- ➦ First Hello Java Program
- ➦ How to Compile and Run a Java Program
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