coderef

Java

Java SE 25 core classes by package, language features and JDK tools.
Official reference ↗

java.lang

java.lang

java.util

Collections

Utilities

java.util.function

java.util.function

java.util.stream

java.util.stream

java.util.concurrent

java.util.concurrent

I/O

java.io

java.nio.file

java.time

java.time

Networking

java.net

java.net.http

Text, Math & Regex

java.util.regex

java.math

java.text

java.sql

java.sql

Language Features

JDK Tools