The Hello World program in different Langauges, such as HTML, Java, C++, C# and more langauges.
A "Hello, world!" program is a computer program that outputs "Hello, World!" on a display device. It is typically one of the simplest programs possible in almost all computer languages. As such it can be used to quickly compare syntax differences between various programming languages. It is also used to verify that a language or system is operating correctly. The following is a list of "Hello, world" programs in 28 of the most commonly used programming languages.