613 I am trying to do something in Java and I need something to wait / delay for an amount of seconds in a while loop.

1 Java now supports optionals in 1.8, I'm stuck with programming on android so I'm using nulls until I can refactor the code to use optional types.

May 24, 2016 · Afaik, Java and most typed languages don't overload methods or functions based on return type. For instance public int getValue(String name){} is indistinguishable from public boolean …

Jan 13, 2017 · 52 The reason you cannot do this is that functions must be methods attached to a class. Unlike JavaScript and similar languages, functions are not a data type. There is a movement to make …

Jan 30, 2009 · Well, as for how you actually do it in Java, it's very simple, because Java already provides a function for that, in the Math class: value = Math.abs(value); Yes, doing it without …

19 No. Java methods can only return one result (void, a primitive, or an object), and creating a struct -type class like this is exactly how you do it. As a note, it is frequently possible to make classes like …

Mar 6, 2017 · I am wondering when to use static methods? Say if I have a class with a few getters and setters, a method or two, and I want those methods only to be invokable on an instance object of the …

More answers on how to use a Lambda function, or pass it as a parameter: simple example parameter as a function java.

Dec 28, 2016 · In order to make use of a return a value from a function you must assign it to a variable or use it as a test condition, etc.

Dec 4, 2009 · 139 Java 8 introduced CompletableFuture, available in the package java.util.concurrent.CompletableFuture, which can be used to make an async call :