Java 错误：无法找到或加载主类 sun.applet.AppletViewer

Error: Could not find or load main class sun.applet.AppletViewer

提问by Charles Xavier

I'm using eclipse and I'm creating this java appletbut I keep getting below error when I tried to run an applet. I know it's deprecated in the new version (I even tired 1.8) but is there something I can use to make it work?

我正在使用 eclipse 并且我正在创建它，java applet但是当我尝试运行小程序时，我一直遇到以下错误。我知道它在新版本中已被弃用（我什至厌倦了 1.8）但是有什么我可以用它来使它工作的吗？

Error: Could not find or load main class sun.applet.AppletViewer Caused by: java.lang.ClassNotFoundException: sun.applet.AppletViewer

错误：无法找到或加载主类 sun.applet.AppletViewer 导致：java.lang.ClassNotFoundException：sun.applet.AppletViewer

回答by Tanmoy Bhowmick

I think you are using jdk-13currently install jdk-8and open Eclipse and go to Window->Preferences->Add->nextand find your jvm folder(/usr/lib/jvm) and from there select jdk-8, after adding jdk-8 remove the jdk-13 from Preferences.

我认为您正在使用jdk-13当前安装jdk-8并打开 Eclipse 并转到 Window->Preferences->Add->next并找到您的 jvm 文件夹（/usr/lib/jvm），然后从那里选择jdk-8，添加 jdk-8 后，从首选项中删除 jdk-13。

after that it will start working, if error Exception in thread "main" java.awt.AWTError: Assistive Technology not found: org.GNOME.Accessibility.AtkWrapper

之后它将开始工作，如果错误 Exception in thread "main" java.awt.AWTError: Assistive Technology not found: org.GNOME.Accessibility.AtkWrapper

comes (linux) then simply run this command : sudo sed -i -e '/^assistive_technologies=/s/^/#/' /etc/java-*-openjdk/accessibility.properties

来（linux）然后只需运行此命令： sudo sed -i -e '/^assistive_technologies=/s/^/#/' /etc/java-*-openjdk/accessibility.properties

it should work. thankyou..

它应该工作。谢谢你..