I have the following code: This compiles: This doesn't: Compilation results in this: java: incompatible types: cannot infer type-variable ...
I have the following code: This compiles: This doesn't: Compilation results in this: java: incompatible types: cannot infer type-variable ...
I am trying to use a list of function references as a lookup table (avoiding the need for a long switch statement). The code worked for a list of stat ...
I have the following domain classes: And I have a list of tasks called tasks. I would like to group Task objects by project's ids. The resulting ...
I'm learning Java 8 with Lambda and Streams and method reference. And I have a question regarding the example below. I don't understand how is it p ...
I'm facing an odd issue invalid method reference And the IntelliJ IDEA even recommends to perform the auto-refactoring to get rid of the lambda ...
I have the code snippet below. But i was wondering how to try catch exception with method references. I want to write try catch block for getUserByUse ...
Java List type does not have a getSize() method. Is there a way to tell reference the size() method in EL instead? I've tried #{aList.size > 10} bu ...
I have a following program And I see the method retryAction returns int. Then how is public static Retry retry= RetryUtils::retryAction; a valid as ...
I was expecting these to be simple drop-in replacements for each other, but they're not. Clearly I'm not understanding the notation. Can anyone expla ...
Flink version is 1.10.0 codes as follow: The following error is : But if the lambda expression is written by replacing it with double colons ...
This doesn't work, because premiumStrings::contains can take any object and not just strings. One can replace it with (String s) -> premiumString ...
In the following example (also on Kotlin Playground), IntelliJ offers to change the lambda (as in the commented-out first line of main) to a method re ...
Interface Main Class ServiceA ServiceB ServiceC Here from the main class, I am calling a method of ServiceA that internally calls to th ...
The first assignment below doesn't compile, but I am not sure why, the method signature of the static method matches the functional method signature a ...
Example: Since 3 is a given number, the value returned by the function and printed on the console should be "aaa". ...
Whenever I use Map.Entry::getKey in my streams for my public methods, I get an issue around my method not being static. I even tried making my method ...
the usage of method references as listeners in an observer pattern does not work. Example: Conclusion: each referencing of the listener method with ...
Consider the following article from the JLS (§15.13.1) A method reference expression ending with Identifier is exact if it satisfies all of the fo ...
I am going through an example which pulls an Array of hidden files from current directory related to method reference which is as mentioned below ...
i just try to create thread by using method reference. so how to explain why it works. does it works just like the lambda ? ...