copyrow.html
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<TITLE>Copying a Row or Column in a JTable Component
(Java Developers Almanac Example)
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<h3>
e911.
Copying a Row or Column in a JTable Component</h3>
This example demonstrates how to copy a column or row of data
in a <code>DefaultTableModel</code>.
<pre>
DefaultTableModel model = new DefaultTableModel();
JTable table = new JTable(model);
// Create some data
// Get all the table data
Vector data = model.getDataVector();
// Copy the second row
Vector row = (Vector)data.elementAt(<font color="#0066ff"><i>1</i></font>);
row = (Vector)row.clone();
// Overwrite the first row with the copy
Vector firstRow = (Vector)data.elementAt(<font color="#0066ff"><i>0</i></font>);
for (int i=0; i<row.size(); i++) {
firstRow.set(i, row.get(i));
}
// Append the copy to the end of the table.
// Note that a copy is NOT made of 'row'.
model.addRow(row);
// Copy the first column
int mColIndex = <font color="#0066ff"><i>0</i></font>;
java.util.List colData = new ArrayList(table.getRowCount());
for (int i=0; i<table.getRowCount(); i++) {
row = (Vector)data.elementAt(i);
colData.add(row.get(mColIndex));
}
// Copy it to the second column
for (int i=0; i<colData.size(); i++) {
row = (Vector)data.elementAt(i);
row.set(<font color="#0066ff"><i>1</i></font>, colData.get(i));
}
// Append a new column with copied data
model.addColumn(<font color="#0066ff"><i>"Col3"</i></font>, colData.toArray());
</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
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e907. <a class="eglink" href="AppendRow.html?l=rel">
Appending a Row to a JTable Component
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e908. <a class="eglink" href="InsertRow.html?l=rel">
Inserting a Row in a JTable Component
</a>
<br>
e909. <a class="eglink" href="RemoveRow.html?l=rel">
Removing a Row from a JTable Component
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e910. <a class="eglink" href="MoveRow.html?l=rel">
Moving a Row in a JTable Component
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e912. <a class="eglink" href="RowHeight.html?l=rel">
Setting the Height of a Row in a JTable Component
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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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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
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<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
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