Java-jar execution of Eclipse export jar package error handling

1. Error 1

F:\>java-jar Remotelogin.jar
Exception in Thread "awt-eventqueue-0" Java.lang.noclassdeffounderror:com/alibaba/fastjson/json
At Com.diantusoft.LoginWindow.getFingerPrintFromDB (loginwindow.java:819)
At Com.diantusoft.LoginWindow.login (loginwindow.java:630)
At Com.diantusoft.loginwindow.access$8 (loginwindow.java:577)
At com.diantusoft.loginwindow$13.mouseclicked (loginwindow.java:509)
At Java.awt.Component.processMouseEvent (component.java:6528)
At Javax.swing.JComponent.processMouseEvent (jcomponent.java:3324)
At Java.awt.Component.processEvent (component.java:6290)
At Java.awt.Container.processEvent (container.java:2234)
At Java.awt.Component.dispatchEventImpl (component.java:4881)
At Java.awt.Container.dispatchEventImpl (container.java:2292)
At Java.awt.Component.dispatchEvent (component.java:4703)
At Java.awt.LightweightDispatcher.retargetMouseEvent (container.java:4898)
At Java.awt.LightweightDispatcher.processMouseEvent (container.java:4542)
At Java.awt.LightweightDispatcher.dispatchEvent (container.java:4462)
At Java.awt.Container.dispatchEventImpl (container.java:2278)
At Java.awt.Window.dispatchEventImpl (window.java:2750)
At Java.awt.Component.dispatchEvent (component.java:4703)
At Java.awt.EventQueue.dispatchEventImpl (eventqueue.java:751)
At java.awt.eventqueue.access$500 (eventqueue.java:97)
At Java.awt.eventqueue$3.run (eventqueue.java:702)
At Java.awt.eventqueue$3.run (eventqueue.java:696)
At java.security.AccessController.doPrivileged (Native Method)
At Java.security.protectiondomain$1.dointersectionprivilege (protectiondomain.java:75)
At Java.security.protectiondomain$1.dointersectionprivilege (protectiondomain.java:86)
At Java.awt.eventqueue$4.run (eventqueue.java:724)
At Java.awt.eventqueue$4.run (eventqueue.java:722)
At java.security.AccessController.doPrivileged (Native Method)
At Java.security.protectiondomain$1.dointersectionprivilege (protectiondomain.java:75)
At Java.awt.EventQueue.dispatchEvent (eventqueue.java:721)
At Java.awt.EventDispatchThread.pumpOneEventForFilters (eventdispatchthread.java:201)
At Java.awt.EventDispatchThread.pumpEventsForFilter (eventdispatchthread.java:116)
At Java.awt.EventDispatchThread.pumpEventsForHierarchy (eventdispatchthread.java:105)
At Java.awt.EventDispatchThread.pumpEvents (eventdispatchthread.java:101)
At Java.awt.EventDispatchThread.pumpEvents (eventdispatchthread.java:93)
At Java.awt.EventDispatchThread.run (eventdispatchthread.java:82)
caused By:java.lang.ClassNotFoundException:com.alibaba.fastjson.JSON
At Java.net.URLClassLoader.findClass (urlclassloader.java:381)
At Java.lang.ClassLoader.loadClass (classloader.java:424)
At Sun.misc.launcher$appclassloader.loadclass (launcher.java:331)

Workaround: Use export, Java-Runnable jar file instead Export-java jar file on your proj ECT (right mouse click).

2. Error 2:could not find Main method from given launch configuration

Reason: Choose the wrong launch configuration, naturally can not find the main method, choose to choose the one that includes the main method of the class as launch

Java-jar execution of Eclipse export jar package error handling