Java Interview questions and answers from your first java program.

java interview questions and answers with example.
In this tutorial, I am going to show you. how to start coding with java and with this we will discuss some java interview questions and answers which will be related to your first java program.

How to set an environment for developing java program.
How to set the path for javac and java.
Write your first program with java.
Java Interview question and answer from your first java program.
Requirement for java development at your system.
Java development tools(JDK).

An editor like notepad, notepad++ etc and you can use any Ide.

There are lots of IDE tools available in the market like eclipse, Netbeans etc.

How to install JDK:

It’s very simple to download the latest version of JDK from “Download JDK ”

And follow the following steps.

Now easy to your work we need to set a path for javac and java.

How to set path in java for javac and java:

Java interview questions and answers from your first java program.
Can a class name is “main” in Java or same as the main method name.
No, Java is case sensitive so we can keep the class name as “Main” but it will not “main”.

Should the main class name same as a file name?

Yes, the file name should we same as the main class name.

If a class is public than its necessary to save with the same name otherwise there will be compile time error.

If class is not public and you save the file with another name then it compiles successfully but it will give you a runtime error “Error: Could not find or load main class Main”

Can we change the position of public static void main?

Yes, There is some different way to write the main method for details please watch below the video.

why the main method is static.

The main method is static because according to the static properties. “we can call a method directly by name without object creation” so the main method is directly called by JVM.

Can we write multiple public classes in the single file.

No. we can’t write because In a single file we can write only one public class.

The System is a class. Out is a static variable in this system class. and print() is a method.

[duanedonaldson]

Your web links are outdated as of OCT 2021 and it also appears that you have updated the name of the blog post so during a search of your webpage, Java Interview questions and answers from your first java program is no longer the exact name, but the new name is Core java interview questions and answers from first Java program. Would you mind going through all of your YouTube videos and updating your links in the description area above or pinning a new comment at the top of this comment section to include the proper links?