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Questions and Answers
What is a key design goal of the Java programming language?
What is a feature of the Java runtime that is not typically available in traditional compiled languages?
What is the current latest version of Java as of March 2024?
Who originally developed Java?
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What is the license under which most of Java's technologies were relicensed in 2007?
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In what year was the Java language project initiated by James Gosling, Mike Sheridan, and Patrick Naughton?
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What was the original purpose of the Java language?
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What was the name of the oak tree-inspired language before it was renamed Java?
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What was the main feature of Java that made it popular among developers?
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In what year was Java 2 (J2SE 1.2) initially released?
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Study Notes
Java Overview
- Java is a high-level, class-based, object-oriented programming language designed to have minimal implementation dependencies.
- It is a general-purpose language that allows programmers to write once, run anywhere (WORA), meaning compiled Java code can run on all platforms that support Java without the need to recompile.
Key Features
- Java applications are typically compiled to bytecode that can run on any Java virtual machine (JVM) regardless of the underlying computer architecture.
- Java has fewer low-level facilities than C and C++.
- The Java runtime provides dynamic capabilities such as reflection and runtime code modification, which are typically not available in traditional compiled languages.
History
- Java was originally developed by James Gosling at Sun Microsystems in 1991.
- It was initially designed for interactive television, but was later renamed Java after Java coffee.
- Java was released in May 1995 as a core component of Sun's Java platform.
- Sun Microsystems released the first public implementation as Java 1.0 in 1996.
Versions
- As of March 2024, Java 22 is the latest version.
- Java 8, 11, 17, and 21 are previous LTS versions still officially supported.
JVM
- Oracle offers its own HotSpot Java Virtual Machine.
- The official reference implementation is the OpenJDK JVM, which is free open-source software and used by most developers and is the default JVM for almost all Linux distributions.
Popularity
- Java has been a very popular programming language since its release.
- It 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.
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Description
Learn about Java, a general-purpose language that allows programmers to write once, run anywhere, with minimal implementation dependencies. Discover its key features and more.
