However, for legitimate, offline development and testing on a 64-bit Windows 10 machine, you can still obtain Java 9 from official archives. This guide will show you exactly how – safely and correctly.

, please share what legacy application you're running — there might be a modern alternative.

: Create a new System Variable named JAVA_HOME and set its value to the root JDK folder path (without the \bin at the end). Java SE 9 Archive Downloads - Oracle

Oracle has removed Java 9 from public downloads. Here are your options:

Navigate to this page using Chrome, Edge, or Firefox on your Windows 10 64-bit PC.

Whether you are maintaining a legacy application, studying the history of Java modularization, or testing software compatibility, finding a safe and working download link for Java 9 can be surprisingly difficult. Since Java 9 is an older, non-Long-Term-Support (non-LTS) release, it is no longer featured on the main download pages of Oracle.