Select Start -> Control Panel -> Add/Remove Programs, Here you can see the list of installed software on your computer. How do I know if Java is installed on Windows?
How do I know if I have JDK installed on Windows? To download any JRE or JDK from the Oracle download page without signing in, go to the downloads page for the version you want (such as ) and click on the Download link of your choice. While other editions like EE add extra functionality, the SE has all of the essential libraries you need.
If you’re just getting your feet wet with Java then installing either Java SE 8 or Java SE 11 is your best bet.
