[JAVA] [Programming learning] Logic comparison by language part.1 ("Hello World")

Since I started learning various languages in parallel on a certain programming learning site, I will summarize what kind of code each will be and how it will be different when trying to obtain the same output in each language as the output of the learning content. I will go.

1."Hello World." Display "Hello World." Stored in variable message

Ruby

helloworld.rb

message = "Hello World."
puts message

$ ruby helloworld.rb
Hello World.

Python3

helloworld.py

message = "Hello World."
print(message)

$ python helloworld.py
Hello World.

Swift

helloworld.swift

var message = "Hello World."
print(message)

(playground)
Hello World.

Java

helloworld.java

public class helloworld {
	public static void main(String[] args){
		 System.out.println("Hello World.");
	}
}

(eclipse console)
Hello World.

C＃

helloworld.cs

using System;
public class Hello{
    public static void Main(){
        Console.WriteLine("Hello World.");
    }
}

(Assumption that the exe file is created by compiling Execute using'mono'in the execution environment at hand)

$ mono helloworld.exe
Hello World.

Reference articles, etc.

About C # execution environment preparation on mac Compile and run C # code on Mac

About java development / execution environment preparation on mac [Mac] How to easily install Java development environment all at once