What is Java

The dominant language of large-company backend systems, and the original language of Android apps.

In plain terms

Banks, insurers, and most of the Fortune 500 run Java backends, usually with the Spring framework. Android development used Java before Kotlin took over. Java experience skews toward larger organizations and long-running systems. Java and JavaScript are separate languages with no shared history, despite the names.

What it tells you about a developer

Java depth signals enterprise backend experience: big codebases, formal process, systems that stay up. Java developers convert easily to C# or Kotlin. Spring experience specifically maps to large-company work.

Facts

Type
Language
Released
1995
Used in
Backend, Mobile

They can pick up quickly

Read the lesson on Java More in What the tech words mean