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Hi, guys,

Below is our first code in java

public class Hello {
public static void main(String args[]) {
System.out.println("Hello World");
System.out.println("Welcome to code bode");

}
}

Here are details of the first java code

Packages

1)Packages groups related classes
2)Think of it has a folder structure for maintaining classes
3)We can maintain code properly and avoid name conflicts within classes.
4)name convention e.g. com.codebode.projects

Class
1)Java is based on OOP so functionality is written inside the class
2)public allows it to be an accessible outside package
3)Public Class name should be same as file name
4)syntax : class className

Main Method
1)first point of execution(Entry point in java programs)
2)you must have exactly one main method of this signature within the same class
3)Public – method should be visible to JVM
4)Static – Needs to be called without object creation
5)void – JVM does not expect any return value
6)String args[] – arguments passed from the command line

Printing statements
1)syntax to print statements
2)System.out.print - : prints without line break
3)System.out.println -: prints and gives line break


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