compiling and running java programs

user2613113

I have downloaded Java for Java.com. Completed some code in Notepad. I cannot find where to compile the code and test it.

KatAlive

Hi,

To make it very easy, i suggest you to download IDE like Eclipse or Netbeans, they are very useful, also because they include all Javadocs and suggestions meanwhile you're writing the code.

Then, if you wanna continue to use notepad :

1. Save the file as YourFileName.java
2. open command prompt (cmd) on Windows, if you are Mac OS then open Terminal.
3. To compile the program, type the following command :

java YourFileName.java

If you get this error : “javac’ is not recognized as an internal or external command, operable program or batch file“, you need to set the path before compilation; so :

• Open command prompt (cmd), go to the place where you have installed java on your system and locate the bin directory, copy the complete path and write it in the command like this.

set path=C:\Program Files\Java\jdk1.8.0_121\bin

When the PATH is ok, try again STEP 3 to compile and then run program with :

java FirstJavaProgram

That's it.

Regards,

Carlo.