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Java

object-oriented programming language

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Java is a computer programming language designed to work across different types of computers and devices by running on a universal platform called the Java Virtual Machine. It matters because its flexibility and reliability have made it one of the most widely used languages for building everything from business software to mobile applications.

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Java is a high-level, general-purpose, memory-safe, object-oriented programming language. It is intended to let programmers write once, run anywhere (WORA), meaning that compiled Java code can run on all platforms that support Java without the need to recompile. Java applications are usually compiled to bytecode that can run on any Java virtual machine (JVM) regardless of the underlying computer architecture. The syntax of Java is similar to C and C++, but has fewer low-level facilities than either of them. The Java runtime provides dynamic abilities (such as reflective programming (reflection) and runtime code modification) usually unavailable in traditional compiled languages.

Java gained popularity shortly after its release, and has been a popular programming language since then. Java was the third most popular programming language in 2022 according to GitHub. Although still widely popular, there has been a gradual decline in use of Java in recent years with other languages using JVM gaining popularity.