I have previously blogged on how Groovy and ActionScript provide demonstrations of switching on Strings functionality that has not been available in Java. JDK 7 changes this for Java by ...

String[ ] – An array of configuration parameters to be used by the application can be passed into the main function as arguments. args – The configuration parameters passed into the main function in ...

Function<Integer, String> functionClass = new FunctionClass(); System.out.println(functionClass.apply(2)); When you run the above code, the output would be four. Java Function interface example.