Pre Java 8: The closest Java has to delegates are single method interfaces. You could use an anonymous inner class. interface StringFunc { String func(String s); } void doSomething(StringFunc funk) { System.out.println(funk.func(“whatever”)); } doSomething(new StringFunc() { public String func(String s) { return s + “asd”; } }); doSomething(new StringFunc() { public String func(String s) { … Read more
There’s Arrays.fill(myArray, null); Not that it does anything different than you’d do on your own (it just loops through every element and sets it to null). It’s not native in that it’s pure Java code that performs this, but it is a library function if maybe that’s what you meant. This of course doesn’t allow … Read more
A simple option is to manually keep track of time using millis(). You would use two variables: one to store elapsed time one to store the wait/delay time you need In the draw() method you would check if the difference between the current time (in millis.) and the previously stored time is greater(or equal) to … Read more
First take a look at this related QA: Mandelbrot Set – Color Spectrum Suggestions? The main idea is to use histogram to distribute the color gradients more effectively to used indexes instead of uniformly wasting many colors on unused indexes. Also it uses a specific visually pleasing gradient function: RGB values of visible spectrum Dynamic … Read more
What needs to happen when mousePressed == ebtn is all the stuff in the Frame will be removed and a Highscores Screen will be loaded The demo. below of a nested CardLayout adds an ActionListener instead of a MouseListener. It reacts to both mouse and keyboard input. There are a multitude of other ways to … Read more