Is there a way to convert a LambdaExpression to a String

I want to convert a LambdaExpression like pos -> pos.x < 5 && pos.y < 5 to a String which looks like this: "pos.x < 5 && pos.y < 5" Is this possible in Java? …

Why use lambda over normal methods?

So suppose my application does lots of repetitive work, for example let’s say my application checks lots of various Lists if they’re empty or not. There are two methods by which I can accomplish this …

Java 8 convert for loop and summing of values to stream/lambda?

I have some String inputs that I am looping over that I am trying to convert to java 8 stream/lambdas but was having some issues. My boilerplate code looks like this: public static int count(List<…

Java 8 find element matching in a list of objects where each object has another object

I have two classes: class SampleClass { private String testString; private List

Lambda expresions and “? :” operator in Java 14

Good day to everyone, I have a question regarding the usage of the ? : operator in the lambda expressions, especially in the switch statements. Could you kindly clarify, why the below code would not …

Java 8 lambda expression or old way

Hello guys I’ve got question about Java 8 lambda expression. For example I want to delete following id from class. UserEntity userEntity = userEntityOptional.get(); for(Long permission_id : …

Why is this lambda expression cast using an ampersand?

recently I stumbled over the following code in the Java Comparator class: public static <T, U extends Comparable> Comparator comparing( Function<? super …

How do you call a method from within a Collector in Java 8 Streaming?

I have a bit of code that is working functionally as I want it to: private Map> localMethod(List branchList) { Map

For loop inside for loops code optimisation

I have an loop inside loop to remove the elements from the seconde loop, and what is present in the list has to perform certain actions. I wish to optimize the iteration and comparisons, can it be …

Switching Keys in a Map of Maps

How would you use Java 8 streams to swap keys in this map of maps? Or at least clean up this mess a little bit… Map<Type1, Map> to Map<Type2, Map<Type1, String&…