Get a deep dive into using method references in your Java programs, including stream operations, event listeners, and constructors and factories.

some crashes reported in our prod app, tried to reproduce it but not able to, also these crashes are not consistent in behaviour. Fatal Exception: java.lang.NullPointerException: Attempt to invoke ...

Here's everything you need to know about Java operators and operator types, and how to use them to write expressions for your Java programs.

Java's default constructor allows developers to create instances of classes when no other constructors are explicitly defined. The default constructor in Java takes no arguments -- it simply ...

Java.Lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Class java.lang.Object.getClass ()' on a null object reference #88 ...

by Vladimir Ananyev Issue How to get reference keys from topology objects and later bind back to them? Solution General Information: Inventor requires internal associativity to be able to update ...

In Java, objects are passed by reference, and all methods are virtual, so object slicing will not occur inadvertently. Even if you upcast an object, its real type is not forgotten, that's the ...