How to Install Java on Windows, Linux and macOS?

The Java Runtime Environment (JRE) is a software package that enables Java-based applications to run seamlessly across platforms.

The official Reference Implementations for Java SE 7 (JSR 336) are based solely upon open-source code available from the JDK 7 Project in the OpenJDK Community. Binaries are provided for both the linux-x64 and windows-i386 platforms.

To start coding in Java, you first need to install the Java Development Kit (JDK) on your system. This article provides detailed steps for installing Java on Windows 7, 8, 10, 11, Linux Ubuntu, and macOS.

下載適用於所有作業系統的 Java 此下載適用於需要 Java 才能在桌上型或筆記型電腦上執行應用程式的一般使用者。 Java 8 會與您的作業系統整合，以單獨執行安裝的 Java 應用程式。 如果系統要求您安裝 Java 以執行桌面應用程式，那您最有可能需要的便是此版本。

使用下列的簡要說明來手動下載與安裝適用於 Windows 電腦的 Java (亦稱作 Java Runtime Environment 或 JRE)

Download the Java including the latest version 17 LTS on the Java SE Platform. These downloads can be used for any purpose, at no cost, under the Java SE binary code license.

Go to the Oracle Java Archive page. Thank you for downloading this release of the Java TM Platform, Standard Edition Development Kit (JDK TM). The JDK is a development environment for building applications, applets, and components using the Java programmi