You can have both versions installed simultaneously. Many developers do this to test cross-compatibility.
If you need 32-bit Java, you are almost certainly looking for or older.
Double-click the jre-8uXXX-windows-i586.exe file (the name may vary by version).
You cannot install 32-bit Java on macOS Ventura or Sonoma. If you need it, you must:
: Open your Command Prompt and type: java -version If it is 32-bit, the output will typically not mention "64-Bit". You can also use the -d32 flag to test support . Important Considerations
: If installing to a system location, you must use root or sudo . ⚙️ Configuration & Environment Variables Forcing java 32 bit execution - Oracle Forums