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.

Null pointer exceptions are common software faults, but they are dangerous and can cause a program to crash if they occur. In addition, it is hard to find them by simply running test cases. When a ...

Null pointer exception check Suppose in your code , your input is a complex object , and you start to read some properties in your code from it ( at any level), it's not an easy task to write a test ...

It doesn't take much Java development experience to learn firsthand what the NullPointerException is about. In fact, one person has highlighted dealing with this as the number one mistake Java ...

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 ...

When running spark-submit with slf4j-log4j12-1.7.18.jar in the ClassPath, FluentLogger works with no issues. When we use version 1.7.30 which comes with Spark3.0, Fluentlogger.getLogger throws a null ...