Hello World Program in Java

Hi folks Dinesh Krishnan(Online Java Trainer) here To write and execute the simple Hello World Program in Java Language. First make sure you have following requirements on your machine.

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  • JDK(Java Development Kit)
  • JRE(Java Runtime Environment)
  • Text Editor

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Step 1: Open the any text editor such as (Subline Editor, NotePad++ and etc).
Step 2: Type the following code in the text editor

public class HelloWorld {
public static void main(String[] args) {
System.out.println("Hello World");
}
}

Step 3: Save the file as HelloWorld.java (Note: Make sure your file name and class name are same).
Step 4: Open the Command prompt or Terminal on your machine and point the directory where the HelloWorld.java file was saved.
Step 5: Compile the file by executing the command such as javac HelloWorld.java then you can see class file that is generated in same directory name as HelloWorld.class
Step 6: Run the program by the command such as java HelloWorld

Finally you can see the output as “Hello World” in the console.

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