query: Java NullPointer Exception with Jpanel
positive_passages.docid: 49
positive_passages.text: What is a NullPointerException, and how do I fix it?
negative_passages.docid: 58054
negative_passages.text: When is it OK to catch NullPointerException?
negative_passages.docid: 29271
negative_passages.text: *.xhtml url-pattern causes java.lang.NullPointerException at com.sun.faces.context.flash.ELFlash.loggingGetPhaseMapForReading
negative_passages.docid: 49613
negative_passages.text: Setting a background image on a JFrame using Swing
negative_passages.docid: 130819
negative_passages.text: Nullpointerexception while setting a bean
negative_passages.docid: 147879
negative_passages.text: Exception when taking a heapdump using JMAP
negative_passages.docid: 9396
negative_passages.text: NullPointerException on AlarmManager.setRepeating() - ElapsedRealTime - Android
negative_passages.docid: 121948
negative_passages.text: Java GUI repaint() problem?
negative_passages.docid: 124773
negative_passages.text: NullPointerException when calling service in onResume
negative_passages.docid: 158788
negative_passages.text: Call to getLayoutInflater() in places not in activity
negative_passages.docid: 113358
negative_passages.text: JPanel & components change position automatically
negative_passages.docid: 133039
negative_passages.text: Simplest way to set image as JPanel background
negative_passages.docid: 46857
negative_passages.text: Compiler warning: null reference exception
negative_passages.docid: 35129
negative_passages.text: Why does String.valueOf(null) throw a NullPointerException?
negative_passages.docid: 140738
negative_passages.text: Does setting Java objects to null do anything anymore?
negative_passages.docid: 98780
negative_passages.text: Test Method throwing null pointer exception on custom setting
negative_passages.docid: 11537
negative_passages.text: What is IndexOutOfBoundsException? How can I fix it?