jodd.util.StringPool Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of extractor Show documentation
Show all versions of extractor Show documentation
Web Data Extractor - Extract data from common web format. like HTML,XML,JSON.
// Copyright (c) 2003-present, Jodd Team (http://jodd.org)
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
package jodd.util;
/**
* Pool of String constants to prevent repeating of
* hard-coded String literals in the code.
* Due to fact that these are public static final
* they will be inlined by java compiler and
* reference to this class will be dropped.
* There is no performance gain of using this pool.
* Read: http://java.sun.com/docs/books/jls/third_edition/html/lexical.html#3.10.5
*
* - Literal strings within the same class in the same package represent references to the same
String object.
* - Literal strings within different classes in the same package represent references to the same
String object.
* - Literal strings within different classes in different packages likewise represent references to the same
String object.
* - Strings computed by constant expressions are computed at compile time and then treated as if they were literals.
* - Strings computed by concatenation at run time are newly created and therefore distinct.
*
*/
public interface StringPool {
String JODD = "jodd";
String AMPERSAND = "&";
String AND = "and";
String AT = "@";
String ASTERISK = "*";
String STAR = ASTERISK;
String BACK_SLASH = "\\";
String COLON = ":";
String COMMA = ",";
String DASH = "-";
String DOLLAR = "$";
String DOT = ".";
String DOTDOT = "..";
String DOT_CLASS = ".class";
String DOT_JAVA = ".java";
String EMPTY = "";
String EQUALS = "=";
String FALSE = "false";
String SLASH = "/";
String HASH = "#";
String HAT = "^";
String LEFT_BRACE = "{";
String LEFT_BRACKET = "(";
String LEFT_CHEV = "<";
String NEWLINE = "\n";
String N = "n";
String NO = "no";
String NULL = "null";
String OFF = "off";
String ON = "on";
String PERCENT = "%";
String PIPE = "|";
String PLUS = "+";
String QUESTION_MARK = "?";
String EXCLAMATION_MARK = "!";
String QUOTE = "\"";
String RETURN = "\r";
String TAB = "\t";
String RIGHT_BRACE = "}";
String RIGHT_BRACKET = ")";
String RIGHT_CHEV = ">";
String SEMICOLON = ";";
String SINGLE_QUOTE = "'";
String BACKTICK = "`";
String SPACE = " ";
String TILDA = "~";
String LEFT_SQ_BRACKET = "[";
String RIGHT_SQ_BRACKET = "]";
String TRUE = "true";
String UNDERSCORE = "_";
String UTF_8 = "UTF-8";
String US_ASCII = "US-ASCII";
String ISO_8859_1 = "ISO-8859-1";
String Y = "y";
String YES = "yes";
String ONE = "1";
String ZERO = "0";
String DOLLAR_LEFT_BRACE= "${";
String CRLF = "\r\n";
String HTML_NBSP = " ";
String HTML_AMP = "&";
String HTML_QUOTE = """;
String HTML_LT = "<";
String HTML_GT = ">";
// ---------------------------------------------------------------- array
String[] EMPTY_ARRAY = new String[0];
byte[] BYTES_NEW_LINE = "\n".getBytes();
}