public class ExtensionMethodExample { public String test() { int[] intArray = {5, 3, 8, 2}; java.util.Arrays.sort(intArray); String iAmNull = null; return Extensions.or(iAmNull, Extensions.toTitleCase("hELlO, WORlD!")); } } class Extensions { public static <T> T or(T obj, T ifNull) { return obj != null ? obj : ifNull; } public static String toTitleCase(String in) { if (in.isEmpty()) return in; return "" + Character.toTitleCase(in.charAt(0)) + in.substring(1).toLowerCase(); } }