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    Thrown when an application is trying to use or access an object whose reference equals to null. You are probably trying to use a reference that points to no location in memory as though it were referencing an object.

Solutions on the web

via by Unknown author, 1 year ago
via GitHub by tazmaniax
, 8 months ago
This exception has no message.
via Jive Software Open Source by wroot, 1 year ago
via JIRA by wroot, 1 year ago
via Jive Software Open Source by wroot, 1 year ago
java.lang.NullPointerException: 	at java.util.Hashtable.put(	at javax.swing.text.SimpleAttributeSet.addAttribute(	at javax.swing.text.StyleConstants.setFontFamily(	at	at	at	at	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(	at sun.reflect.DelegatingMethodAccessorImpl.invoke(	at java.lang.reflect.Method.invoke(	at	at apple.launcher.LaunchRunner.callMain(	at apple.launcher.JavaApplicationLauncher.launch(