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How to run java program.md

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How to run java program.md

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#CMD Guide for running programs

Ok although running JAVA programs on CMD looks old fashioned an gives us the feeling that we are coding in 80's :p I suggest using software for JAVA programming like Netbeans IDE or Eclipse. These softwares will give you a feel like of a professional coder and will make up your mood for coding more !!

I have a bad and slow internet. What to do? Oh so thats the problem? Usually netbeans and eclipse softwares are 250+ MB and can take time when downloaded over a bad internet connection. But there is a way you can code in modern way without using crappy old fashioned notepad. Download the software Sublime text 2. It is just like notepad but isn't old fashioned and its only 2Mb. Happy Coding

How to run program on cmd once i wrote the program? Ok so you wrote a JAVA program on Notepad or Sublime Text or whatever, now you need to run it on cmd.

  1. You need to download JDK ( JAVA Development Kit ) in order to run programs. It is must needed software to run your programs if you want to use Command Prompt.

  2. Once you downloaded the JDK for you system, then open the Command Prompt, make sure the program must be saved with the name format [name].java. The .java extension is necessary and save your program inside jdk/bin.

  3. Copy the address/directory of jdk/bin and it will be something like C:\Program Files\Java\jdk1.8.0_45\bin

  4. Now you need to set this directory on our cmd so for setting directory on cmd we use cd [directory and in the above case it will be like cd C:\Program Files\Java\jdk1.8.0_45\bin

  5. Once the directory is set, then you need to compile your program so to compile use javac [programname] like for example javac calculator.java and it will compile your code and show you error if there are some.

  6. Now for running the code type in java [classname] REMEMBER THAT JAVA IS CASE SENSITIVE SO YOUR CLASS NAME SHOULD BE SAME WHEN YOU TYPE IN THAT COMMAND for example java Calculator. Hit enter and BOOM your program will run..

HAPPY CODING ~