incorrectversionexception.java

Skin Look And Feel 1.2.10, 给你的java程序换肤, 支持大量通用皮肤文件.

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 * Skin Look And Feel 1.2.10 License.
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 *       "This product includes software developed by L2FProd.com
 *        (http://www.L2FProd.com/)."
 *    Alternately, this acknowlegement may appear in the software itself,
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package com.l2fprod.gui.plaf.skin;

/**
 * Thrown when a Theme Pack requires a SkinLF version greater than the current.
 * <br>
 *
 *
 * @author    $Author: l2fprod $
 * @created   27 avril 2002
 * @version   $Revision: 1.3 $, $Date: 2004/08/13 19:26:21 $
 */
public final class IncorrectVersionException extends Exception {

  /**
   * Constructor for the IncorrectVersionException object
   *
   * @param required  Description of Parameter
   * @param current   Description of Parameter
   */
  public IncorrectVersionException(String required, String current) {
    super("Incorrect Skin Look And Feel version, " +
        "current version is " + current + ", required version is " + required);
  }

  /**
   * Check if the current version is bigger or equals to the required
   * version. If this is not the case an
   * <code>IncorrectVersionException</code> is thrown.
   * 
   * @param current Description of Parameter
   * @param required Description of Parameter
   * @exception IncorrectVersionException if the current version does not fit
   */
  public static void checkRequiredVersion(String current, String required)
    throws IncorrectVersionException {
    java.util.StringTokenizer currentToken =
      new java.util.StringTokenizer(current, ".");
    java.util.StringTokenizer requiredToken =
      new java.util.StringTokenizer(required, ".");

    int currentCount = currentToken.countTokens();
    int requiredCount = requiredToken.countTokens();

    int min = Math.min(currentCount, requiredCount);

    for (int i = 0; i < min; i++) {
      String cTok = currentToken.nextToken();
      String rTok = requiredToken.nextToken();
      
      int cValue = Integer.parseInt(cTok);
      int rValue = Integer.parseInt(rTok);
      
      // the current version is bigger than the required
      if (cValue > rValue) {
        break;
      }
      if (cValue < rValue) {
        throw new IncorrectVersionException(required, current);
      }
      if ((i == min - 1) && (currentCount < requiredCount)) {
        throw new IncorrectVersionException(required, current);
      }
    }

  }
  
}