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.

Ever come across the null pointer exception in Java? We explain what this error message means, why it happens, and how to avoid the billion-dollar mistake.

java.lang.NullPointerException at org.eclipse.swtchart.internal.compress.Compress.getCompressedXSeries (Compress.java:92) at org.eclipse.swtchart.internal.series ...

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 ...