Run your First Java Program

How to Compile and Run your First Java Program

Simple Java Program:

Create a java project in IDE. Create package in src and java class in that package.

public class demoFirstProgram {
  public static void main(String[] args){
    System.out.println("This is my first program in java");
  }//End of main
}

Explanation of the Code:

public static void main(String[] args)  {

This is our next line in the program, lets break it down to understand it:
public: This makes the main method public that means that we can call the method from outside the class.

static: We do not need to create object for static methods to run. They can run itself.

void: It does not return anything.

main: It is the method name. This is the entry point method from which the JVM can run your program.

(String[] args): Used for command line arguments that are passed as strings.
System.out.println("This is my first program in java");

This method prints the contents inside the double quotes into the console and inserts a newline after.

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Thanks.