今日捣鼓OCR引擎Tesseracat，发现中文识别错误率很高，所以想自己训练数据，参考文章需要用到jTessBoxEditor。下载后发现用自带的openjdk无法正常运行jar文件。出现错误：
Exception in thread "AWT-EventQueue-0" java.awt.HeadlessException
at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:204)
at java.awt.Window.<init>(Window.java:536)
at java.awt.Frame.<init>(Frame.java:420)
at java.awt.Frame.<init>(Frame.java:385)
at javax.swing.JFrame.<init>(JFrame.java:189)
at net.sourceforge.tessboxeditor.Gui.<init>(Unknown Source)
at net.sourceforge.tessboxeditor.GuiWithMRU.<init>(Unknown Source)
at net.sourceforge.tessboxeditor.GuiWithEdit.<init>(Unknown Source)
at net.sourceforge.tessboxeditor.GuiWithSpinner.<init>(Unknown Source)
at net.sourceforge.tessboxeditor.GuiWithFont.<init>(Unknown Source)
at net.sourceforge.tessboxeditor.GuiWithLaF.<init>(Unknown Source)
at net.sourceforge.tessboxeditor.GuiWithTools.<init>(Unknown Source)
at net.sourceforge.tessboxeditor.GuiWithGenerator.<init>(Unknown Source)
at net.sourceforge.tessboxeditor.GuiWithTrainer.<init>(Unknown Source)
at net.sourceforge.tessboxeditor.GuiWithValidator.<init>(Unknown Source)
at net.sourceforge.tessboxeditor.GuiWithValidator$1.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
所以特地安装Oracle的JDK，又遇到问题：
sudo dnf install jdk-8u241-linux-x64.rpm
问题: conflicting requests
- nothing provides /bin/basename needed by jdk-11.0.6-2000:11.0.6-ga.x86_64
- nothing provides /bin/cp needed by jdk-11.0.6-2000:11.0.6-ga.x86_64
- nothing provides /bin/ls needed by jdk-11.0.6-2000:11.0.6-ga.x86_64
- nothing provides /bin/mkdir needed by jdk-11.0.6-2000:11.0.6-ga.x86_64
- nothing provides /bin/mv needed by jdk-11.0.6-2000:11.0.6-ga.x86_64
- nothing provides /bin/pwd needed by jdk-11.0.6-2000:11.0.6-ga.x86_64
- nothing provides /bin/sort needed by jdk-11.0.6-2000:11.0.6-ga.x86_64
(try to add '--skip-broken' to skip uninstallable packages)
正确步骤：
# cd jdk path
sudo rpm -Uvh jdk-8u241-linux-x64.rpm
sudo alternatives --config java
# cd jar path
sudo java -Xms128m -Xmx1024m -jar jTessBoxEditor.jarJDK软件包下载：
链接: https://pan.baidu.com/s/1_H0TolU68wZGhda5SnqMbQ 提取码: 66ai
来源：oschina
链接：https://my.oschina.net/wffger/blog/3162451