How can I use an old java applet with an expired certificate?

Question

We have been using a java applet from a 3rd party vendor for years. The vendor no longer exists. The certificate is expired and java is showing a warning message every time users access the applet.

Is there some way to mark the certificate or the JAR as being trusted so it doesn't keep warning users?

Answer 1

为自己获取一个新的代码签名证书，并亲自对JAR文件进行签名。