java

public class Test {
public static void main(String[] args) {
System.out.println("hello world");
    }
}


yml

foo:
  en: hello world!
  zh: 你好世界!


conf

foo.en=hello world!
foo.zh=你好世界!


json

[
  {
"lang": "en-us",
"value": "hello world!"
  },
  {
"lang": "zh-cn",
"value": "你好世界!"
  }
]


xml

<note>
<to>George</to>
<from>John</from>
<heading>Reminder</heading>
<body>Don't forget the meeting!</body>
</note>


vue

<template>
  <h3>{{ message }}</h3>
</template>
<script>
export default {
  data: () => ({
    message: 'hello world!',
  }),
}
</script>


html

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Hello World!</title>
</head>
<body>
    Hello World!
</body>
</html>


js

window.onload = function () {
  let to = 'world'
  console.log(`hello ${to}`)
}


css

body {
--bg-color: lightblue;
background-color: var(--bg-color);
}


bash

echo 'hello world!'


diff

+ 人闲桂花落，
- 夜静春山空。
! 月出惊山鸟，
# 时鸣春涧中。


py

print('Hello World!')


go

package main
import "fmt"
func main() {
fmt.Printf("Hello World!\n God Bless You!");
}


ruby

puts "Hello world!"


c

#include <stdio.h>
int main(void)
{
printf("\nhello world!");
return 0;
}


php

<?php
echo "hello world!";
?>