How to Run Java Program ? CMD And Eclipse

There are two ways to Run Java Program.

1. Run java program in Cmd.
2. Run java program in Eclipse Ide.

1)  Run java program in CMD

• Firstly, you could download the JDK because it is a necessary thing when you run java program

Download JDK 

• After Download set of the path in JDK    

• subsequently, make a new folder and the name the folder is "java" in your Desktop.

•  After that open the notepad(editor) which helps to write code and type the simple java program as below.

    class HelloWorld
    {
        public static void main(String[] args) 
        {
            System.out.println("Hello, World!");
            System.out.println("Welcome to java overflow");
        }
    } 
  

• copy the code and past your editor.

• After save Run java program name  >  HelloWorld.java

• you can understand first of all the file name and class name is equal because if you don't do it so you phase error so I suggest.

• Then after open the run menu you show at the image and after type CMD then press the enter.

• After that, you set the program folder pathname which is given by yourself 

• our case, this code looks like > cd Desktop > cd java

• Then type: javac HelloWorld.java 

• Show your Java folder in the .class file generate it's your HelloWorld.class,

• it's java compiler generate the .class file its "byte code" form.

• Then type  > javac HelloWorld

• Show the image in the wrong class name should be not allowed

• So type carefully and type the right name and then hit Enter. 

• Then java program run and show output your code.

• so it's all about in the Run java program in cmd

2)  Run java program in eclipse 

•  First set of the JDK  path.

•  After Download the Eclipse Ide in 👇below link (Relative your operating system)

Click to download

• After download the eclipse zip file to convert the normal file and open the setup.exe file.

• click open and  run after install and accept all agreement and license
  
  

• Click on the eclipse ide for enterprise java developers(you can also download Eclipse ide for java Developers)

• After clicking on the launch and then one by one configuration the teams and condition

• open the eclipse and show this below view👇

• Create a new java project and give the name of the run java program

• Ignore modify filename and enter don't create

• Click on the src folder and create a new java class file the same as the picture

• Copy This code and run a java application

 class HelloWorld
    {
        public static void main(String[] args) 
        {
            System.out.println("Hello, World!");
            System.out.println("Welcome to java overflow");
        }
    } 

• right-click on the src folder and run as a java application and hit the enter

• show This run button end hit enter.

• show console in the output.

• above all process to write java code in java enterprise edition so it's difficult but in the future, this is a good habit for involving a good developer category

• so above all things should be Run java program in Eclipse ide