how to fix 'java.lang.NullPointerException' problem?
49
What is a NullPointerException, and how do I fix it?
480
What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it?
81518
Find out what variable is throwing a NullPointerException programmatically
3889
Why am I getting a NoClassDefFoundError in Java?
80631
NullPointerException but compiling?
5052
RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
132398
What is null in Java?
93104
What is a NumberFormatException and how can I fix it?
81565
getClass().getResource() always returning null
35016
java.lang.NullPointerException at org.primefaces.component.datatable.feature.FilterFeature.filter
156400
NullReferenceException when using NUnit
33103
How come invoking a (static) method on a null reference doesn't throw NullPointerException?
3984
How to fix 'android.os.NetworkOnMainThreadException'?
157952
java.lang.ClassNotFoundException: org.hibernate.HibernateException
87728
ArgumentNullException or NullReferenceException from extension method?
64200
Can Java's NullPointerException be changed to report on which variable was null?
33474
I can read from /dev/null; how to fix it?