Null pointer exception is an “exception” (error) that is particularly common when programming in Java. For a beginner, this is a confusing and daunting message to receive, but it can be just ...

When a null pointer exception occurs, the stack trace stored by the Java runtime environment can help us to locate the cause of the exception. In this paper, firstly, we propose an automatically null ...

Learn what causes null pointer exceptions in Java, how to identify them, and how to fix them with simple techniques and best practices. Also, learn how to test and learn more about them.

In Item #43 of the Second Edition of Effective Java (Item #27 in the First Edition), Joshua Bloch recommends returning empty arrays or empty collections rather than returning null.

The error 500: Java.lang.nullpointerexception is an error that is faced by some developers when executing their code. Moreover, end-users also encounter ...

Null pointer exception is a commonly occurring error in Java programs, and many static analysis tools can identify such errors. However, most of existing tools ...

Jetty version 11.0.1 Java version 11 OS type/version MacOX Description I'm using this code verbatim to run an embedded Jetty server. HTTP calls work totally fine. However, HTTPS calls start failing ...

Summary I am getting null pointer exception when I try to run extent reports using selenium with Java Expected Behavior System should not display Null Pointer exception and should display the exten ...