Java 版本 8 更新 20 引入了一个繁琐的步骤，必须通过一系列复杂的步骤来验证小程序是否合法。甲骨文是这样说的：
Medium (removed from Java 8 Update 20 and later versions) </br>
Only unsigned applications that request all permissions are blocked. All
other applications are allowed to run with security prompts. Selecting
the Medium security level is not recommended and will make your
computer more vulnerable should you run a malicious application.
我如何恢复旧的行为？
也就是说，如何运行 Java 小程序 ( IcedTea ) 而不必遵循以下步骤。