Java is a popular programming language used for developing applications and software. It is known for its platform independence, meaning it can be run on any device or operating system that has a Java Virtual Machine installed. Java is also used extensively in web development, particularly for creating dynamic and interactive web pages. Its object-oriented programming features make it a popular choice for building complex software systems. Additionally, Java has a large and active developer community, which provides a wealth of resources and support for those learning to use the language.