java programing shikhe,- Java programming tutorial(HINDI)

Java programming language ki value(mahatva)

Aaj ke iss technology ke yug me insaan apna har kaam Computer se kar raha hai.Chahe wo school ho ya college,koi company ho ya dukan.Ghar,office, bazaar, khel, time-pass,etc. harr ,jahaan par computer ya mobile hai.Aaj koi bhi aadami chahe wo budha ho ya bachcha, chahe wo educated ho ya anpadh, har koi aaj Android mobile chala raha hai.Android phone na sirf ek phone hai balki ye ek Portable Computer bhi hai, jiske madhyam se hum log apne anek kaam ko aasaan bana lete hai.Android phone ka app store jise hum log Google Play Store ke naam se jaante hai, isme laakhon apps hai.

To iss tarah se apps banane wale ghar baithe Android apps bana kar acche paise kama rahe hai.Android mobile me apps banane ke liye aapko Java programming ki acchi knowladge honi zaroori hai.

Android mobile ke saare apps, softwares, Java programming language se hi banaye jaate hai.Yahaan par aap sabhi apna thoda time dekar kuch hi dino me Java program ko puri tarah se sikh sakte hain.

To chaliye ye jaante hai ki Java programming sikhne se pehle aapko kin-kin chijon ki jaroorat hai.

Java environment Setup.

Java programming se pehle aapko apne pc me Java environment setup karna padega.

• 1.JDK(Java development kit).

• 2.Textpad(text editor).

1.JDK

Sabse pehle to aap apne computer me JDK-7(Java devlopment kit) download kare. JDK(java development kit) ek pc software hai jo ki sabhi operating system pe maujood hai.

JDK download karne ke liye aapko Oracle ke website pe jana hoga,niche diye huye link se aap free me JDK-7 download kar sakte hai.

• JDK-7(Java development kit) CLICK TO DOWNLOAD

Download link par click karte hi apke saamne ye screen aa jaayega



Jaisa ki aap uper dekh sakte hai, oracle ke official website ka JDK-7 download page open ho gaya.Ab niche aaiye or dekhiye ki JDK ka download link hoga,jo ki bohot saare platforms ke liye hoga.Agar aap windows 7 pc user hai to apne system ke hisab se 32bit/64bit dono me se jo aapka system hai us version ko download kar lijiye.. Iss download ko aap niche diye huye photo se bhi samajh sakte hain.



JDK download karne me yadi koi pareshani ho rahi hai to comment ke madhyam se mujhe bataiye.

To iss tarah se aap JDK(Java development kit) safalta purvak download kar payenge.

Ab chalte hai Textpad ki taraf.Textpad ek text editor software hai, jo ki lagbhag sabhi platforms pe maujood hai.

2.Textpad(text editor).

Textpad ek texteditor software hai,jo lagbhag sabhi platforms pe available hai.Textpad ka use hum Java ke program,s ko likhne me karenge. Iske alaawa bhi textpad kisi aur text editors ke mukaabale accha hai, kyu ki textpad ke ander hum Java program ko likhne ke sath hi usko Compile bhi kar sakte hai.To chaliye jaante hai ki Textpad ko kaise download kare.

Textpad download karne ke liye sabse pehle aapko Textpad ke official website par jana hoga,uske baad wahaan download section me apne computer operating system ke hisaab se 32bit/64bit, aapka operating system jo bhi ho download kar lein.Textpad ko aap niche diye link se bhi download kar sakte hai.

• Textpad:CLICK TO DOWNLOAD

To ab iss download link ko click karte hi aapke saamne Textpad ka official website open ho jayega, page open hone ke baad aapko uper ke section me download ka ek tab dikhega, download ke tab par click kariye, jaisa ki niche photo me bataya gaya hai.



Textpad ke download tab click karne ke baad aapke saamne ek naya window open ho jayega, iss window me textpad ke saare platforms ke liye downloads available honge.To aapko apne computer ke requirment ke hisaab se, agar aap windows 7 user hain to window ke 32bit/64bit dono version list me diye gaye hai. to aap apne system ke hisab se download link par click kar textpad ko download kariye,jaisa ki niche photo me dikhaya gaya hai.



To iss prakaar aap safalta purvak Textpad ko download kar payenge. Textpad download karne ke baad isko install kariye. Installation complite hone ke baad Textpad ko open kariye...That's it!

To doston ab aap sabhi ne JDK(Java development kit) or Textpad download kar liya.Ab aapka computer ek Java development hub ban chuka hai.

Ab aapke pass Java development environment hai,ab aap Java program sikh kar Java apps or program bana sakte hai.To chaliye ab Java ki study shuru karte hain.

Java ka parichaya

Introduction of Java

Origin of Java

Java ek object-oriented language hai.Java ka janm(origin) 1990 me hua. San 1990, me Sunmicrosystems Inc.(US) ko software banane ka ek project mila.Ye project chote-chote electronic machines ke liye tha jo ki remote ke madhyam se control kiya ja sakta ho.Saal 1991, me 5 aadmi-Bill Joy, James Gosling, Mike Sheradin, Patrick Naughton or kuch logo ne milkar "Colorado" me ek meeting rakhi,jo ki iss project ke sambandh me tha. Meeting ke baad sabhi logon ko apne apne knowladge ke hisab se project ko start karne ke liye kaam de diya gaya.James Gosling ne C or C plus plus language ke dwara is project(software) ko develop karne ke baare me socha.Lekin C or C plus plus ke sath problem ye thi ki ye dono language system dependent the, matlab ki C or C plus plus ke dwara banaya gaya software sabhi machine me nahi chal sakta tha, to James Gosling ne is problem se baahar aane ke liye ek naye programming lauguage ko develop karne me joot gaye.Naya language puri tarah se system indepndent tha, or ye kisi bhi platform/computer or machine me chal sakta tha. Shuruaat me is naye language ka naam Oak rakha gaya, lekin ye naam(Oak) pehele se he kisi aur company ko registered tha to kuch samay ke baad iss naye lauguage ka naam JAVA rakha gaya.

JAVA hi kyu? koi aur naam kyu nahi?

Wo isliye, kyu ki iss naye language ko banate(developing) time,James Gosling or unke team ke sabhi members coffee bohot hi jyada piya karte the.Achi quality ka coffee puri duniya me JAVA ISLAND se export kiya jata hai, isliye sab ne milkar iss naye language ka naam JAVA rakh diya.

Java ke features

Editions of Java(Java ke parts)

Sun microsystema Inc. ne Java ko 3 parts me vibhajit kar diya hai.

• 1.JavaSE

• 2.Java EE

• 3.Java ME

1.Java SE

Java SE Java ka Standard Edition hai.Java SE ka upyog chote-mote apps banane ke liye kiya jata hai.

2.Java EE

Java EE Java ka Enterprise Edition hai. Iska upyog khas taur par business se related software's banane me kiya jata hai.

3.Java ME

Java ME. Ye java ka Micro Edition hai.Ye khas taur par developers ke liye hai jo chote-chote portable devices ke liye apps banate hai. Java ab puri duniya me phail chuka hai, iske piche ek bada karan hai, wo ye ki, Java puri tarah se system independent language hai-matlab ye ki java language ke dwara banaye gaye apps or programs kisi bhi computer/platform/operating system me badi hi aaraam se chal sakta hai.

Aaj hum Java ke kuch root points ko learn karenge, jiske baad Java ke saath hum badi hi aasaani se apps or programs bana sakte hain.Java ek obeject-oriented language hai, matlab ki, Java apne program ko banane me object's or classe's ka use karta hai.To chaliye ab mai aap sabhi ko Java ke base structure ke bare me batata hoon.

Base structure of Java

Java ka base structure,jise hum root structure bhi bol sakte hai,ke andar, object,class,methods(functions),or variables aate hai.To chaliye inn root structure's ke baare me jaaniye.

• 1.object

• 2.class

• 3.methods

• 4.variables

Uper likhe list me aapne dekha ki inn 4 structure's ko jaan kar aap ek simple Java program bana sakte hain.To chaliye ab in 4 ko details se samajhate hain.

1.What is an object?

Ye object kya hota hai?

Ab aap soch rahe honge ki ye object hota kya hai?

Ek object kuch bhi ho sakta hai.Matlab ki koi bhi chij jo is duniya me maujood ho or jise hum physically dekh sakte hai, wo sabhi object's hai.Example ke liye--Tree,pen,book,Ram,etc.

Ummid hai ki uper diye udaahrano se ek object kya hota hai, ye aap samajh gaye honge.Agar kisi bhi type ka koi bhi confusion ho to please comment kare.Ab mai aapko class ke baare me batata hoon.

2.What is a class in Java?

Java me class kya hota hai?

Ye class kya hota hai?class se hum ye jaan sakte hai ki koi bhi chij ya vastu ya human kis samooh ka hai.class ka use mukhya roop se kisi samudaya ya kisi group ya aise vastuon ke sangrah se liya ja sakta hai,jo mukhya roop se ek jaise hi ho..Example ke liye hum book ko le sakte hain.Book ka matlab kitab hota hai..Agar mai ye kahu ki kisi school ke kisi student ke english ke book ke bare me baat karu to iska matlab hai ki,wo book kisi special ladke ka hai.To yahaan ek book ke baare me baat hui.To ye ek book ko hum object bol sakte hai, lekin agar mai ye kahu kibooks ko learn karne se knowlage badhta hai to yahaan baat kisi object ki nahi ho rahi hai, yahaan books ka matlab duniya ke saare books se hai.

Ek class ke ander mukhyatah ek hi type ke bohot saare objects hote hai.Jaise example ke taur par--Men, ek class hai,jiske andar duniya ke saare males(aadami) aa jate hain.To ab aap class ka matlab samajh gaye honge. kisi bhi prakaar ka koi problem ho to niche comment karke bataiye.

Ab aage hum metnod's ke baare me jaanenge.

3.What is a method in Java?

Java me method ka kya matlab hota hai?

Jaise maan lijiye ki dog ek class hai.Ab iss class ke ander duniya ke saare dogs aa jate hain,lekin in saare dogs ki activity to ek jaise hi hai.Jaise ki--barking,running,eating,etc.. To ye jo activities hain (barking,running,eating) inko methods ke dwara write kiya jataa hai, matlab ki Java ke saare tasks alag-alag methods ke dwara program kiya jata hai.

Ab hum variables ke baare me janenge.

4.What is variable in Java?

Java me variable ka kya matlab hota hai?

Kisi bhi object ke baare me diya gata koi descripition variable kahlaata hai.

Niche diye hue chart se aap object,class,method,or variables ko achi tarah se samajh sakte hain.

Root structure Details
Name	Ram
Age	25
Gender	Male
Height	5.8_ft
Activity	Running,talking,eating,fithting,etc.

So,uper diye gaye chart ke anusaar.

• 1.Class-Male

• 2.Object-Ram

• 3.Variables-(Name-Ram,Age-25,Height-5.8ft)etc.

• 4.Methods-(Activity-Running,walking,talking,eating)etc.

To ab aap sabhi ne Java ke root structure's ke baare me achi tarah se samajh liya, agar iske baad bhi mann me koi confusion ho to niche comment box me comment kare.

To chaliye ab aage badhte hain,Java ke root structure's ke baare me jaan lene ke baad,Java ki programming ab aap sabhi ke liye aasaan ho gayi hai.

Ab hum ye dekhenge ki Java ke ye root structure's kaam kaise karte hain.

Jaisa ki hum sub jaante hain ki in root structures objects,class,methods,or variables ek type ka nirdesh/order/instruction hota hai, jo program ke andar in root structures ke dwara likha jata hai.Program ko likhne ke baad hum ise .java extension ke naam se save kar lenge.Niche Java program ka ek example diya gaya hai,dhyan se observe kare.

 

Ab iss code ko apne Textpad open karke usme type kariye.Jaisa ki niche photo me dikhaya gaya hai.

Code ko type karne ke baad aap usse save kar lijiye..jaisa ki niche photo me dikhaya gaya hai.

 

Save ka option click karte hi aapke saamne ek windows open ho jayegi, window open hote hi sabse pehle aapko save karne se pehle uska naam change karke (hello.java) kar dena hai,uske baad save option par click kariye,jaisa ki niche photo me dikhaya gaya hai.

 

Textpad me code save karne ke baad,Tool option par click kariye..jaisa ki niche photo me dikhaya gaya hai.

 

Tool par click karte hi aapke saamne kuch options aa jayengi unme se aapko pehle apne code ko Compile karna hai, to Compile ka option click kare ,uske baad aap apne code ko ussi Tool option me jaakar Run kariye,tab uska jo result (output) hai wo aapke screen par aa jaayega.. Jaisa ki niche photo me dikhaya gaya hai.

Aaj aapne kya-kya sikha.

Aaj aapne sabse pehle Java ka parichaya liya.Uske baad aapne Java ke origin(janm) ke baare me jaana or Iss program ka naam Java kyu hai, ye sab baatein aaj aapne sikh liya.. Aage chalte hue aapne apne PC me Java environment setup kaise hota hai ye dekha. Phir aage Java ke root structures object,class,method, or variables ko achi tarah se samajh liya, sath hi sath aaj aapne apne text editor me Java ka simple program hello world bhi write or compile kiya..

To ab to aap sabhi ko Java ke structure ko samajhane me koi dikkat nahi hui, kisi bhi confusion ko aap comment karke door kar sakte hain.