This Bugzilla instance is a read-only archive of historic NetBeans bug reports. To report a bug in NetBeans please follow the project's instructions for reporting issues.

Bug 268080 - NullPointerException at javax.swing.plaf.basic.BasicScrollPaneUI$Handler.mouseWheelMoved
Summary: NullPointerException at javax.swing.plaf.basic.BasicScrollPaneUI$Handler.mous...
Status: NEW
Alias: None
Product: ide
Classification: Unclassified
Component: Code (show other bugs)
Version: 8.1
Hardware: All All
: P3 normal (vote)
Assignee: issues@ide
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-09-18 04:16 UTC by bryandario8
Modified: 2017-01-18 20:32 UTC (History)
2 users (show)

See Also:
Issue Type: DEFECT
Exception Reporter: 219836

Attachments
stacktrace (2.69 KB, text/plain)
2016-09-18 04:16 UTC, bryandario8 		Details
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description bryandario8 2016-09-18 04:16:15 UTC 
Build: NetBeans IDE 8.1 Beta (Build 201508041349)
VM: Java HotSpot(TM) Client VM, 25.65-b01, Java(TM) SE Runtime Environment, 1.8.0_65-b17
OS: Windows 10

User Comments:
GUEST: .

GUEST: ???????????

GUEST: this message keep apearing to me

GUEST: .

GUEST: ???

GUEST: Opened a fullscreen app that had different display resolution than my main monitor. NetBeans was resized when I alt-tabbed to it and after maximizing it again it would give me this error.

GUEST: I was programming and I saw a red line around the notification icon, then I saw this random error. I don't know what the hell is going on.

GUEST: .

GUEST: I scroll up or down and it gives the error. I don't know if it's because I minimized blocks of code.

GUEST: message.log:
<Please provide a description of the problem or the steps to reproduce>-------------------------------------------------------------------------------
>Log Session: Sunday, September 13, 2015 6:33:17 AM CEST
>System Info: 
  Product Version         = NetBeans IDE 8.1 Beta (Build 201508041349) (#5687e691c7fc)
  Operating System        = Windows 10 version 10.0 running on amd64
  Java; VM; Vendor        = 1.8.0_60; Java HotSpot(TM) 64-Bit Server VM 25.60-b23; Oracle Corporation
  Runtime                 = Java(TM) SE Runtime Environment 1.8.0_60-b27
  Java Home               = C:\Program Files\Java\jdk1.8.0_60\jre
  System Locale; Encoding = de_DE (nb); Cp1252
  Home Directory          = C:\Users\carschrotter
  Current Directory       = C:\Program Files\NetBeans 8.1 Beta
  User Directory          = C:\Users\carschrotter\AppData\Roaming\NetBeans\8.1beta
  Cache Directory         = C:\Users\carschrotter\AppData\Local\NetBeans\Cache\8.1beta
  Installation            = C:\Progra

bryandario8: Exception appears for no reason. NullPointerException

GUEST: <Please provide a description of the problem or the steps to reproduce>s




Stacktrace: 
java.lang.NullPointerException
   at javax.swing.plaf.basic.BasicScrollPaneUI$Handler.mouseWheelMoved(BasicScrollPaneUI.java:866)
   at java.awt.AWTEventMulticaster.mouseWheelMoved(AWTEventMulticaster.java:532)
   at java.awt.AWTEventMulticaster.mouseWheelMoved(AWTEventMulticaster.java:531)
   at java.awt.Component.processMouseWheelEvent(Component.java:6623)
   at java.awt.Component.processEvent(Component.java:6307)
   at java.awt.Container.processEvent(Container.java:2236)
Comment 1 bryandario8 2016-09-18 04:16:17 UTC 
Created attachment 162096 [details]
stacktrace