How Java Program Works In Details Step By Step

How Java Program Work? / Java Program Life Cycle

OOPS concepts in Java

Java tutorials for beginners

Java basics concepts

Java Objects and Classes

What is Inheritance in Java?

What is Abstraction in Java?

What is Interface in Java?

What is Abstract Class in Java?

What is Polymorphism in Java?

What is Encapsulation in Java?

Java programming example

How Java Program Work?

Hello World in Java

Java basics for beginners

How to run Java Class in command prompt?

Java Object Class and Instance

Basics concept in Java

Step 1: Write Java Program.

Step 2: Compile java file to class file and generate byte code.

Step 3: Byte code translate to machine code and run on JVM.

                  

                   

Steps to write, compile and run java program using command prompt.

     (i). Save the program. After using a text editor, such as NotePad, to create your Java program, save the program with a .java extension.

(ii). Open Command Prompt.

(iii). Navigate to the correct folder.
(iv). Set path.

(v). Compile the program.

(vi). Run the program.

Create class as Demo and save as Demo.java in correct folder.Class name and file name should be same.

public class Demo {

public static void main(String args[]){
System.out.println("First java program is successes");
}

}

Set path in Java

Right click on My computer and click on  properties option.

Click on Advanced system settings.

Click on Environment Variables.

Set JAVA_HOME (to java home path)

Example:  C:\Program Files\Java\jdk1.8.0_111

Set PATH(Path to Java bin directory)

Example:  C:\Program Files\Java\jdk1.8.0_111\bin

Compile the program with command javac Demo.java

Run the program in command prompt 

Example: java Demo(Class name)

Output will be showing on command prompt on press enter button after writing the run command.