Generic cast
/* * Copyright (C) 2001-2003 Colin Bell * colbell@users.sourceforge.net * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ import java.io.*; import java.text.NumberFormat; import java.util.regex.Matcher; import java.util.regex.Pattern; /** * General purpose utilities functions. * * @author <A HREF="mailto:colbell@users.sourceforge.net">Colin Bell</A> */ public class Utilities { /** * This is taken from Eammon McManus' blog: * http://weblogs.java.net/blog/emcmanus/archive/2007/03/getting_rid_of.html This prevents you from having * to place SuppressWarnings throughout your code. * * @param <T> * the return type to cast the object to * @param x * the object to cast. * @return a type-casted version of the specified object. */ @SuppressWarnings("unchecked") public static <T> T cast(Object x) { return (T) x; } }
1. | Java generic: Use a wildcard. | ||
2. | Java generic: Bounded Wildcard arguments | ||
3. | Use a wildcard. | ||
4. | Bounded Wildcard arguments. | ||
5. | Generic structure with constraints | ||
6. | Return an implementation of a Comparable |