validatevalue.html

来自「java类库详细讲解」· HTML 代码 · 共 192 行

HTML
192 行
字号 
<HTML>
<HEAD>
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
<TITLE>Preventing Invalid Values in a Cell in a JTable Component
(Java Developers Almanac Example)
</TITLE>
<META CONTENT="Patrick Chan" NAME="AUTHOR">
<META CONTENT="Code Examples from The Java Developers Almanac 1.4" NAME="DESCRIPTION">
<META CONTENT="Addison-Wesley/Patrick Chan" NAME="OWNER">
<META CONTENT="3/20/02" NAME="revision">
<STYLE TYPE="text/css">
<!--     BODY CODE  {font-family: Courier, Monospace;           font-size: 11pt}    TABLE, BODY          {font-family: Verdana, Arial, Helvetica, sans-serif;           font-size: 10pt}    PRE   {font-family: Courier, Monospace;           font-size: 10pt}    H3    {font-family: Verdana, Arial, Helvetica, sans-serif;           font-size: 11pt}    A.eglink {text-decoration: none}    A:hover.eglink {text-decoration: underline}    -->
</STYLE>
</HEAD>
<BODY>
<TABLE CELLSPACING="0" CELLPADDING="0" BORDER="0">
<TR>
<TD rowspan="3"><A HREF="/?l=ex"><IMG BORDER="0" ALIGN="BOTTOM" HSPACE="10" SRC="/egs/almanac14a.jpg"></A></TD><TD VALIGN="top"><font face="Times" size="6"><b>The Java Developers Almanac 1.4</b></font>
<br>
        Order this book from <a href="/cgi-bin/scripts/redirect.pl?l=ex&url=http://www.amazon.com/exec/obidos/ASIN/0201752808/xeo">Amazon</a>.
    </TD>
</TR>
<TR>
<TD align="right" valign="bottom">
<FORM method="get" action="/cgi-bin/search/find.pl">
<INPUT size="25" name="words" type="text"><INPUT value="Search" type="submit">
</FORM>
</TD>
</TR>
</TABLE>
<HR color="#6666cc">
<DIV ALIGN="LEFT">
<A HREF="/">Home</A>
    &gt;
    <A HREF="../index.html">List of Packages</A>
    &gt;
    <B><A HREF="../javax.swing.table/pkg.html">javax.swing.table</A></B><font color="#666666" SIZE="-2">
        &nbsp;[62 examples]
        </font>
        &gt;
        <B><A HREF="../javax.swing.table/pkg.html#Editing">Editing</A></B><font color="#666666" SIZE="-2">
            &nbsp;[8 examples]
            </font>
</DIV><P>
  <h3>
    e953.  
    Preventing Invalid Values in a Cell in a JTable Component</h3>

This example demonstrates how to modify a custom table cell editor to
prevent invalid values from being saved.  See
<a href="../javax.swing.table/CustEdit.html" class="eglink"><font size="-1"><b>e952</b> Creating a Custom Table Cell Editor in a JTable Component</font></a> for more information about table
cell editors.


<pre>
    
    public class MyTableCellEditor extends AbstractCellEditor implements TableCellEditor {
        // See <a href="../javax.swing.table/CustEdit.html" class="eglink"><font size="-1"><b>e952</b> Creating a Custom Table Cell Editor in a JTable Component</font></a>
        // for other methods that need to be implemented.
    
        // This method is called just before the cell value
        // is saved. If the value is not valid, false should be returned.
        public boolean stopCellEditing() {
            String s = (String)getCellEditorValue();
    
            if (!<font color="#0066ff"><i>isValid(s)</i></font>) {
                // Should display an error message at this point
                return false;
            }
            return super.stopCellEditing();
        }
    }
</pre>
<P><table width="600" CELLSPACING="0" CELLPADDING="2" BORDER="0">
<tr>
<td bgcolor="#6666cc" align="center"><font color="#ffffff">
            &nbsp;Related Examples
        </font></td>
</tr>
</table>


e952. <a class="eglink" href="CustEdit.html?l=rel">
    Creating a Custom Table Cell Editor in a JTable Component
</a>
<br>

e954. <a class="eglink" href="CustEditClick.html?l=rel">
    Setting the Activation Click Count for a Table Cell Editor in a JTable Component
</a>
<br>

e955. <a class="eglink" href="StopEdit.html?l=rel">
    Programmatically Starting and Stopping Cell Editing in a JTable Component
</a>
<br>

e956. <a class="eglink" href="AnchorEdit.html?l=rel">
    Creating a Text Field That Mirrors the Value in the Anchor Cell in a JTable Component
</a>
<br>

e957. <a class="eglink" href="NoEdit.html?l=rel">
    Disabling User Edits in a JTable Component
</a>
<br>

e958. <a class="eglink" href="ComboBox.html?l=rel">
    Using a JComboBox in a Cell in a JTable Component
</a>
<br>

e959. <a class="eglink" href="Spinner.html?l=rel">
    Using a List JSpinner as a Cell Editor in a JTable Component
</a>
<br>


<table width="600" CELLSPACING="0" CELLPADDING="2" BORDER="0">
<tr>
<td align="left">
<br>
        See also: 
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Cells">
    Cells
</a>&nbsp;&nbsp;

<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Column%20Heads">
    Column Heads
</a>&nbsp;&nbsp;

<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Columns">
    Columns
</a>&nbsp;&nbsp;

<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Events">
    Events
</a>&nbsp;&nbsp;

<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Layout">
    Layout
</a>&nbsp;&nbsp;

<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Rows">
    Rows
</a>&nbsp;&nbsp;

<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Scrolling">
    Scrolling
</a>&nbsp;&nbsp;

<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Selection">
    Selection
</a>&nbsp;&nbsp;

<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Sorting">
    Sorting
</a>&nbsp;&nbsp;

<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Table%20Model">
    Table Model
</a>&nbsp;&nbsp;

<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Tool%20Tips">
    Tool Tips
</a>&nbsp;&nbsp;

</td>
</tr>
</table>

<br>

<br>
<FONT FACE="Verdana, Arial, Helvetica, sans-serif" SIZE="0">
&copy; 2002 Addison-Wesley.
</FONT>
</BODY>
</HTML>

validatevalue.html - 源码说明

本页面展示了「java类库详细讲解」中的 validatevalue.html 源码文件，采用 HTML 编程语言编写，共 192 行代码。您可以在线阅读完整代码内容，也可以返回资源详情页下载完整源码包进行本地学习和开发。

虫虫下载站收录了大量与java相关的技术资源，包括源代码、技术文档、电路图等，是电子工程师和嵌入式开发者的专业学习平台。

⌨️ 快捷键说明

复制代码Ctrl + C
搜索代码Ctrl + F
全屏模式F11
增大字号Ctrl + =
减小字号Ctrl + -
显示快捷键?