?? tf_edittextfield.html
字號:
<HTML>
<HEAD>
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
<TITLE>Modifying Text in a JTextField 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">
<!-- CODE {font-family: Courier, Monospace; font-size: 12pt} PRE {font-family: Courier, Monospace; font-size: 11pt} BODY {font-size: 10pt} -->
</STYLE>
</HEAD>
<BODY>
<TR>
<TD></TD>
</TR>
<TABLE CELLSPACING="0" CELLPADDING="0" BORDER="0">
<TR>
<TD><A HREF="/?l=ex"><IMG BORDER="0" ALIGN="BOTTOM" HSPACE="10" SRC="../almanac14a.jpg"></A></TD><TD VALIGN="MIDDLE">
<H1>The Java Developers Almanac 1.4</H1>
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>
</TABLE>
<HR>
<TABLE CELLSPACING="0" CELLPADDING="0" BORDER="0">
<TR>
<TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif">
<DIV ALIGN="LEFT">
<FONT FACE="Verdana, Arial, Helvetica, sans-serif" SIZE="3"><A HREF="../../index.html">Home</A>
:
<A HREF="../index.html">List of Packages</A>
:
<B><A HREF="../javax.swing.text/pkg.html">javax.swing.text</A></B><font color="#666666" SIZE="-1">
[ examples]
</font></FONT>
</DIV>
<P></P>
<h3>
e899.
Modifying Text in a JTextField Component</h3>
<pre>
// Create the text field
JTextField tf = new JTextField(<font color="#0066ff"><i>"Initial Text"</i></font>);
Document doc = tf.getDocument();
try {
// Insert some text at the beginning
int pos = <font color="#0066ff"><i>0</i></font>;
doc.insertString(pos, <font color="#0066ff"><i>"some text"</i></font>, null);
// Insert some text after the 5th character
pos = <font color="#0066ff"><i>5</i></font>;
doc.insertString(pos, <font color="#0066ff"><i>"some text"</i></font>, null);
// Append some text
doc.insertString(doc.getLength(), <font color="#0066ff"><i>"some text"</i></font>, null);
// Delete the first 5 characters
pos = <font color="#0066ff"><i>0</i></font>;
int len = <font color="#0066ff"><i>5</i></font>;
doc.remove(pos, len);
// Replace the first 3 characters with some text
pos = <font color="#0066ff"><i>0</i></font>;
len = <font color="#0066ff"><i>3</i></font>;
doc.remove(pos, len);
doc.insertString(pos, <font color="#0066ff"><i>"new text"</i></font>, null);
} catch (BadLocationException e) {
}
</pre>
<P></P>
<FONT FACE="Verdana, Arial, Helvetica, sans-serif" SIZE="0">
© 2002 Addison-Wesley.
</FONT></FONT></TD>
</TR>
</TABLE>
<br>
<hr>
<FORM method="get" action="/cgi-bin/search/find.pl">
<table width="100%">
<tr>
<b>Search</b>:
<INPUT size="40" name="words" type="text"><INPUT value="Search" name="submit" type="submit">
</tr>
<tr>
<font size="-1">
(e.g. "cache", "parse xml dom", "java.lang.String", "java.lang.String.substring", "String.substring", "substring")
</font>
</tr>
</table>
</FORM>
</BODY>
</HTML>
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -