Current workaround is usage of method pointer operator (.&) instead. But it's not the same actually: method pointer returns Closure which has to be casted to required functional interface, but method ...

In Java 8 we can also use double colon (::) as the method reference. By using double colon (::) operator we can easily convert normal method into lambda expression. The below example will show you how ...

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

Quickly learn how to use the Java ternary operator and see how this simple programming construct can help make your conditional logic, if statements and return statements clearer and more concise.

Attempt to invoke virtual method 'double java.lang.Double.doubleValue ()' on a null object reference #20983 ...

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.