In this tutorial we will focus on executing java programs for
practice without using IDE’s like Eclipse,
NetBeans,IntelliJ and also to run java programs
without installing the JAVA Software and compile
and run using the Online Editors.
Download and install the Java from this link -> Java SE Development Kit 8 Downloads
Executing the JAVA Programs without using IDE’s such as Eclipse,Net-beans, IntelliJ Editors
Make sure the java is installed in the location.
JAVA INSTALLATION DIRECTORY LOCATION
Basic Program in JAVA.
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public class HelloWorld { public static void main(String args[]) { System.out.println("Hello World"); } } /* Commenting the below lines of code.. Objective: To print the Message "Hello World" in the console. Points to be Noted: ------------------ ClassName: HelloWorld {}- Curly Braces ()- paranthesis []- Square Brackets ; -Semi colon "" - Double Quotes . - period */ |
Compiling Java from the Command Line / Terminal on MAC or Linux.
1. To open command line Win + R keys on your keyboard. Then, type cmd or cmd.exe and press Enter
Win + R keys on your keyboard. Then, type cmd or cmd.exe and press Enter to open Command line.
2. Execute the following Command to Compile the Program.
javac HelloWorld.java
javac not recognized error:
‘javac’ is not recognized as an internal or external command, operable program or batch file error
comes when you try to compile a Java source file using javac command e.g. javac Helloworld.java
To overcome this you can give the path of the javac available in the program files.
Location of file javac available under the directory java/jdk.
Executing Java from the Command Line / Terminal on MAC or Linux.
open command line and execute the JAVA program using the follow command.
java HelloWorld
Executing the JAVA programs using Online Editors without downloading the software.
Practicing the java programs without installing the Java is easy using the below online
editor. This helps to Edit and execute the programs