A method to solve the problem of MyEclipse10.7 deployment error throwing null pointer anomaly _java

Describe the problem first:

(1) In MyEclipse servers view in MyEclipse 10.7.0 in some cases, may not open. Attempting to open a view will cause NPE to be logged.

Could not create the View:an unexpected exception is thrown. Java.lang.NullPointerException at Com.genuitec.eclipse.ast.deploy.core.Deployment. (Unknown Source) at Com.genuitec.eclipse.ast.deploy.core.ModuleDeployment. (Unknown Source) at Com.genuitec.eclipse.ast.deploy.core.WebDeployment. (Unknown source) at Com.genuitec.eclipse.ast.deploy.core.Deployment.create (Unknown source) at Com.genuitec.eclipse.ast.deploy.core.DeploymentManager.loadFromPreferences (Unknown Source) at Com.genuitec.eclipse.ast.deploy.core.DeploymentManager.init (Unknown Source) at Com.genuitec.eclipse.ast.deploy.core.DeploymentManager. (Unknown source) at Com.genuitec.eclipse.ast.deploy.core.DeploymentManager.getDefault (Unknown source) at  
Com.genuitec.eclipse.ast.deploy.core.ui.servertreeviewer$servertreecontentprovider.inputchanged (Unknown Source) At Org.eclipse.jface.viewers.ContentViewer.setInput (contentviewer.java:276) at Org.eclipse.jface.viewers.StructuredViewer.setInput (Structuredviewer.java:1690) at Com.genuitec.eclipse.ast.deploy.core.ui.ServerTreeViewer. (Unknown source) at Com.genuitec.eclipse.ast.deploy.core.ui.ServerView.createPartControl (Unknown source) at Org.eclipse.ui.internal.ViewReference.createPartHelper (viewreference.java:375) at Org.eclipse.ui.internal.ViewReference.createPart (viewreference.java:229) at Org.eclipse.ui.internal.WorkbenchPartReference.getPart (workbenchpartreference.java:595) at Org.eclipse.ui.internal.PartPane.setVisible (partpane.java:313) at Org.eclipse.ui.internal.ViewPane.setVisible (  
viewpane.java:534) at org.eclipse.ui.internal.presentations.PresentablePart.setVisible (presentablepart.java:180) At Org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select (presentablepartfolder.java:270) at Org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select (lefttorighttaborder.java:65) at Org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart (tabbedstackpresentation.java:473 )  
At Org.eclipse.ui.internal.PartStack.refreshPresentationSelection (partstack.java:1245) at Org.eclipse.ui.internal.PartStack.createControl (partstack.java:662) at Org.eclipse.ui.internal.PartStack.createControl (partstack.java:570) at  
 Org.eclipse.ui.internal.PartSashContainer.createControl (partsashcontainer.java:568)

As shown below:

(2) If any of the above errors are resolved according to the following 3 steps:
1, first close the myeclipse work space.

2, and then delete the workspace under the "/.metadata/.plugins/org.eclipse.core.runtime/.settings/com.genuitec.eclipse.ast.deploy.core.prefs ”

This file. Some information about the deployment project is stored in this file. There is no error in deleting the information on this deployed project.

3, restart the start MyEclipse can be resolved. The lovely cat has appeared again!

The above is about MyEclipse10.7 deployment of the error solution, I hope to help you learn.