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A "Hello, World!" program is usually a simple computer program that emits (or displays) to the screen (often the console ) a message similar to "Hello, World!". A small piece of code in most general-purpose programming languages , this program is used to illustrate a language's basic syntax .
The syntax of Java is the set of rules defining how a Java program is written and interpreted. The syntax is mostly derived from C and C++. ... "Hello, World" ...
Java is a high-level, class-based, object-oriented programming language that is designed to have as few implementation dependencies as possible. It is a general-purpose programming language intended to let programmers write once, run anywhere (), [16] meaning that compiled Java code can run on all platforms that support Java without the need to recompile. [17]
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@Stateless public class HelloWorldService {public String sayHello {return "Hello, world!" With the annotation as given above the bean isn't a truly pure POJO anymore, but since annotations are merely passive metadata this has far fewer harmful drawbacks compared to the invasiveness of having to extend classes and/or implement interfaces. [ 6 ]
The following source code is for a Whitespace "Hello, world!" program. For clarity, it is annotated with S, T and L before each space, tab, and linefeed.
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@M.Bitton: Java is apparently not standardized by an ISO standard. The § Examples says at its head the examples are limited to standardized programming languages. For more details read discussion § Do we really need examples of "Hello, World" in that many select languages? ‑‑ K (🗪 | ) 19:25, 31 August 2023 (UTC)
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