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Questions and Answers
What is a key design goal of the Java programming language?
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 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?
What is the current latest version of Java as of March 2024?
Who originally developed Java?
Who originally developed Java?
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What is the license under which most of Java's technologies were relicensed in 2007?
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?
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?
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?
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?
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?
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.
