htmltable.java

JAVA Servlet2.3外文书籍源码

package basicServlets;

/**
 * Title:        Professional Java Servlet Programming - Chapter 2
 * Description:  Class to output a standard 2 column HTML table.
 * Copyright:    Copyright (c) 2001
 * Company:
 * @author Andrew Harbourne-Thomas
 * @version 1.0
 */
public class HTMLTable
{
  private StringBuffer head;
  private StringBuffer rows;
  private StringBuffer foot;

  /**
   * Initalises the StringBuffer Objects.
   */
  public HTMLTable()
  {
    head = new StringBuffer();
    head.append("<table width=\"90%\" align=\"center\">");
    head.append("<tr><th width=\"50%\" bgcolor=\"lightgrey\">Attribute</td>");
    head.append("<th width=\"50%\" bgcolor=\"lightgrey\">Value</td></tr>");

    rows = new StringBuffer();

    foot = new StringBuffer();
    foot.append("</table>");
  }

  /**
   * Appends the attribute and value in a row to the HTML table StringBuffer.
   *
   * @param attribute The first column value.
   * @param value The second column value.
   */
  public void appendTitleRow(String attribute)
  {
    rows.append("<tr><td colspan=2><b><u>").append(attribute);
    rows.append("</u></b></td></tr>");
  }

  /**
   * Appends the attribute and value in a row to the HTML table StringBuffer.
   *
   * @param attribute The first column value.
   * @param value The second column value.
   */
  public void appendRow(String attribute, String value)
  {
    rows.append("<tr><td>").append(attribute);
    rows.append("</td><td><code>").append(value).append("</code></td></tr>");
  }

  /**
   * Appends the attribute and value in a row to the HTML table StringBuffer.
   *
   * @param attribute The first column value.
   * @param value The second column value.
   */
  public void appendRow(String attribute, int value)
  {
    appendRow(attribute, new Integer(value).toString());
  }

  /**
   * Appends the attribute and value in a row to the HTML table StringBuffer.
   *
   * @param attribute The first column value.
   * @param value The second column value.
   */
  public void appendRow(String attribute, boolean value)
  {
    appendRow(attribute, new Boolean(value).toString());
  }

  /**
   * Overrides Object.toString method to present a String representation
   * of the HTML table built up.
   *
   * @return value The second column value.
   */
  public String toString()
  {
    return head.append(rows).append(foot).toString();
  }

  /**
   * Presents a StringBuffer representation of the HTML table built up.
   *
   * @return value The second column value.
   */
  public StringBuffer toStringBuffer()
  {
    return head.append(rows).append(foot);
  }
}