Generic Data Structure
import java.io.*; interface Executor<E extends Exception> { void execute() throws E; } public class GenericExceptionTest { public static void main(String args[]) { try { Executor<IOException> e = new Executor<IOException>() { public void execute() throws IOException { // code here that may throw an // IOException or a subtype of // IOException } }; e.execute(); } catch(IOException ioe) { System.out.println("IOException: " + ioe); ioe.printStackTrace(); } } }