Weka 3.8.6异常求助：Explorer加载缓慢无响应

我在用Weka 3.8.6时碰到了问题：

• 打开Explorer模块时，应用加载特别慢，几乎无响应，而且几乎没有报错信息
• 启动控制台版本时，只会弹出这些警告：

Environment variable 'JAVA_OPTS' does not exist!
Environment variable 'CLASSPATH' does not exist!
WARNING: A terminally deprecated method in java.lang.System has been called
WARNING: System::setSecurityManager has been called by weka.gui.GUIChooserApp (file:/C:/Program%20Files/Weka-3-8-6/weka.jar)
WARNING: Please consider reporting this to the maintainers of weka.gui.GUIChooserApp
WARNING: System::setSecurityManager will be removed in a future release

有没有朋友遇到过类似的情况？求帮忙解决，谢谢！

内容的提问来源于stack exchange，提问作者kenzn2