How to execute java program in OS

 


To execute Java programs on your operating system, you'll need to have the Java Development Kit (JDK) installed. Here's how to execute a Java program in different operating systems:

 

Windows

Open a command prompt by pressing the Windows key and typing "cmd" in the search bar.

Navigate to the directory where your Java program is saved using the "cd" command. For example, if your program is saved in a folder called "myPrograms" on your desktop, you would type: cd C:\Users\YourUsername\Desktop\myPrograms

Once you are in the directory where your program is saved, compile the Java program by typing the following command: javac MyProgram.java

If there are no errors, the Java compiler will create a file called "MyProgram.class".

To run the program, type the following command: java MyProgram

Mac

Open a terminal window by going to Applications > Utilities > Terminal.

Navigate to the directory where your Java program is saved using the "cd" command. For example, if your program is saved in a folder called "myPrograms" on your desktop, you would type: cd /Users/YourUsername/Desktop/myPrograms

Once you are in the directory where your program is saved, compile the Java program by typing the following command: javac MyProgram.java

If there are no errors, the Java compiler will create a file called "MyProgram.class".

To run the program, type the following command: java MyProgram

Linux

Open a terminal window by pressing Ctrl+Alt+T.

Navigate to the directory where your Java program is saved using the "cd" command. For example, if your program is saved in a folder called "myPrograms" in your home directory, you would type: cd ~/myPrograms

Once you are in the directory where your program is saved, compile the Java program by typing the following command: javac MyProgram.java

If there are no errors, the Java compiler will create a file called "MyProgram.class".

To run the program, type the following command: java MyProgram

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