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 static, and it didn’t work. Below is the compile error I am getting from using Map.Entry()::getKey() : My code Answer The method arguments are of type Map<String, String> and the return type is
Tag: method-reference
Java Consumer MethodReference for nonstatic methods
Code snippet: } Which type of functionalInterface can I use instead SomeConsumer? The main issue here is that it is not static field, and the object I will only know in runtime. I tried to use BiConsumer, however it tells me that I can not refer to non static method in this way. Answer From your usage here: It is
Java compiler: How can two methods with the same name and different signatures match a method call?
I have this class called Container: and the class called Token: and finally a test class for the Token class The test compiles and runs just fine in eclipse. When building on the commad line a compile error is raised: The compilation also fails when I change line 21 to one of When I change the line to one of