In the package directive’s absence, those classes and interfaces belong to the unnamed package (the directory the JVM regards as the current directory—the directory where a Java program begins ...

Java Supplier interface tutorial. As you can see, the code for the class that implements Java’s Supplier interface is fairly simple. The only requirements are the class declaration and the ...

So a more concise lambda expression that implements this Java Function interface would look like this: Function<Integer, String> conciseLambda = (Integer x)-> { return Integer.toString(x*x); }; System ...