import java.util.Scanner;
class hello_world
{
public static void main(String[] args)
{
System.out.println("welcome 2017!");
}}
## PHP
```php
class HelloWorld{
function __construct(){
echo "Hello World";
}
}
$Obj = new HelloWorld;
#include <stdio.h> int main(){ printf("hello_world\nWelcome 2017!\n"); }
#include using namespace std;
int main(){ cout<< "hello world \n Welcome 2017!\n"; }
console.log("welcome 2017!");
## Python
```python
print("welcome 2017!")
using System;
using System.Collections.Generic;
using System.Text;
namespace HelloWorld
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("welcome 2017!");
}
}
public static void main(String[] args)
{
System.out.println("welcome 2017!");
}
}
## PASCAL#
program HelloWorld;
begin
WriteLn('Hello, World');
end.