public class ExampleClass { @Override public String toString() { return "This is an example class."; } @Deprecated public void deprecatedMethod() { // This method is deprecated, do not use it. } public void processData(@NotNull String data) { // Process the data } @SuppressWarnings("unchecked") public List getData() { // Get data from source return new ArrayList(); } @FunctionalInterface public interface ExampleFunctionalInterface { void performAction(); } }