Windows Defender detects and removes this threat.
This threat is a malicious web page designed to lure you into downloading other malware, including Worm:Win32/Ainslot.A. It needs you to have Java installed before it can infect your PC. The malicious web page tries to get you to download Java by claiming you need it to view the page properly.
A link to the page can be sent to you in a spam email message.