Downloading the Java Development Kit (JDK) 8 as a ZIP archive is a popular choice for developers who want a "portable" installation without using a standard Windows installer. While Oracle primarily promotes .exe installers, they also provide compressed archives for manual setup.
You can find the official ZIP files on the pages. Because JDK 8 is an older version, Oracle requires you to sign in to an Oracle Account to access these downloads. Java SE 8 Archive Downloads (JDK 8u211 and later) - Oracle how to download jdk 8 zip for windows