insertrow.html
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<TITLE>Inserting a Row in a JTable Component
(Java Developers Almanac Example)
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<B><A HREF="../javax.swing.table/pkg.html#Rows">Rows</A></B><font color="#666666" SIZE="-2">
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<h3>
e908.
Inserting a Row in a JTable Component</h3>
To insert a row of data to a <code>JTable</code> component, you need to insert it
to its table model. A simple implementation of a table model that
supports the insertion of row data is <code>DefaultTableModel</code>.
<P>
When inserting a row using <code>DefaultTableModel.insertRow()</code>, the position
of the new row must be specified. Positions are locations between
rows. For example, if there are 2 rows in a table, there are 3
possible positions -- 0, 1,and 2. Inserting a row at position 0 makes the
new row the first row. Inserting a row at position 2 makes the new
row the last row.
<P> When inserting a row with fewer values than columns, the
left-most fields in the new row are populated with the supplied values
(left-to-right) and the fields without values are set to null. When
inserting a row with more values than columns, the extra values are
ignored.
<pre>
DefaultTableModel model = new DefaultTableModel();
JTable table = new JTable(model);
// Create a couple of columns
model.addColumn(<font color="#0066ff"><i>"Col1"</i></font>);
model.addColumn(<font color="#0066ff"><i>"Col2"</i></font>);
// Create the first row
model.insertRow(0, new Object[]{<font color="#0066ff"><i>"r1"</i></font>});
// Insert a row so that it becomes the first row
model.insertRow(0, new Object[]{<font color="#0066ff"><i>"r2"</i></font>});
// Insert a row at position p
int p = <font color="#0066ff"><i>2</i></font>;
model.insertRow(p, new Object[]{<font color="#0066ff"><i>"r3"</i></font>});
// Insert a row before the second row
int r = <font color="#0066ff"><i>1;</i></font>
model.insertRow(r, new Object[]{<font color="#0066ff"><i>"r4"</i></font>});
// the new row is now the second row
// Insert a row after the second row
r = <font color="#0066ff"><i>1</i></font>;
model.insertRow(r+1, new Object[]{<font color="#0066ff"><i>"r5"</i></font>});
// the new row is now the third row
// Append a row
model.insertRow(model.getRowCount(), new Object[]{<font color="#0066ff"><i>"r5"</i></font>});
</pre>
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Related Examples
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e906. <a class="eglink" href="GetSize.html?l=rel">
Getting the Number of Rows and Columns in a JTable Component
</a>
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e907. <a class="eglink" href="AppendRow.html?l=rel">
Appending a Row to a JTable Component
</a>
<br>
e909. <a class="eglink" href="RemoveRow.html?l=rel">
Removing a Row from a JTable Component
</a>
<br>
e910. <a class="eglink" href="MoveRow.html?l=rel">
Moving a Row in a JTable Component
</a>
<br>
e911. <a class="eglink" href="CopyRow.html?l=rel">
Copying a Row or Column in a JTable Component
</a>
<br>
e912. <a class="eglink" href="RowHeight.html?l=rel">
Setting the Height of a Row in a JTable Component
</a>
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e913. <a class="eglink" href="Stripe.html?l=rel">
Shading Rows and Columns in a JTable Component
</a>
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<table width="600" CELLSPACING="0" CELLPADDING="2" BORDER="0">
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<td align="left">
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See also:
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Cells">
Cells
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Column%20Heads">
Column Heads
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Columns">
Columns
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Editing">
Editing
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Events">
Events
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Layout">
Layout
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Scrolling">
Scrolling
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Selection">
Selection
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Sorting">
Sorting
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Table%20Model">
Table Model
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Tool%20Tips">
Tool Tips
</a>
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