This might work in JDK 1.7.0 or later:
MultiLineTableCellRenderer r = new MultiLineTableCellRenderer(); UIDefaults d = new UIDefaults(); d.put("TextArea.borderPainter", new Painter() { @Override public void paint(Graphics2D g, Object o, int w, int h) {} }); r.putClientProperty("Nimbus.Overrides", d); r.putClientProperty("Nimbus.Overrides.InheritDefaults", false); table.setDefaultRenderer(String.class, r);
SSCCE
import java.awt.*;
import java.awt.event.*;
import java.util.ArrayList;
import java.util.List;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.plaf.*;
import javax.swing.table.*;
import javax.swing.UIManager.LookAndFeelInfo;
public class TestJTableMultiline2 {
public JComponent makeUI() {
String[] columnNames = {"A", "B", "C"};
Object[][] data = {
{"A0, Line1\nA0, Line2\nA0, Line3", "B0, Line1\nB0, Line2", "C0, Line1"},
{"A1, Line1", "B1, Line1\nB1, Line2", "C1, Line1"},
{"A2, Line1", "B2, Line1", "C2, Line1"}
};
DefaultTableModel model = new DefaultTableModel(data, columnNames) {
@Override public Class<?> getColumnClass(int column) {
return String.class;
}
@Override public boolean isCellEditable(int row, int column) {
return false;
}
};
JTable table = new JTable(model);
table.setAutoCreateRowSorter(true);
MultiLineTableCellRenderer r = new MultiLineTableCellRenderer();
UIDefaults d = new UIDefaults();
d.put("TextArea.borderPainter", new Painter() {
@Override public void paint(Graphics2D g, Object o, int w, int h) {}
});
r.putClientProperty("Nimbus.Overrides", d);
r.putClientProperty("Nimbus.Overrides.InheritDefaults", false);
table.setDefaultRenderer(String.class, r);
return new JScrollPane(table);
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override public void run() {
createAndShowGUI();
}
});
}
public static void createAndShowGUI() {
try {
for (LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch(Exception e) {
e.printStackTrace();
}
JFrame f = new JFrame("Multi-Line Cell Example 2");
f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
f.getContentPane().add(new TestJTableMultiline2().makeUI());
f.setSize(320, 240);
f.setLocationRelativeTo(null);
f.setVisible(true);
}
}
class MultiLineTableCellRenderer extends JTextArea implements TableCellRenderer {
private List<List<Integer>> rowColHeight = new ArrayList<List<Integer>>();
//private Border fhb = UIManager.getBorder("Table.focusCellHighlightBorder");
//private Border epb = BorderFactory.createEmptyBorder(2,5,2,5);
public MultiLineTableCellRenderer() {
super();
setLineWrap(true);
setWrapStyleWord(true);
setOpaque(true);
//System.out.println(fhb.getBorderInsets(this));
//setBorder(epb);
}
@Override
public Component getTableCellRendererComponent(
JTable table, Object value, boolean isSelected,
boolean hasFocus, int row, int column) {
setFont(table.getFont());
setText(value != null ? value.toString() : "");
setMargin(new Insets(2,5,2,5));
//setBorder(hasFocus ? fhb : epb);
if (isSelected) {
setForeground(table.getSelectionForeground());
setBackground(table.getSelectionBackground());
} else {
setForeground(table.getForeground());
setBackground(table.getBackground());
}
adjustRowHeight(table, row, column);
return this;
}
/**
* Calculate the new preferred height for a given row, and sets the height on the table.
* http://blog.botunge.dk/post/2009/10/09/JTable-multiline-cell-renderer.aspx
*/
private void adjustRowHeight(JTable table, int row, int column) {
//The trick to get this to work properly is to set the width of the column to the
//textarea. The reason for this is that getPreferredSize(), without a width tries
//to place all the text in one line. By setting the size with the with of the column,
//getPreferredSize() returnes the proper height which the row should have in
//order to make room for the text.
//int cWidth = table.getTableHeader().getColumnModel().getColumn(column).getWidth();
int cWidth = table.getCellRect(row, column, false).width; //Ignore IntercellSpacing
setSize(new Dimension(cWidth, 1000));
int prefH = getPreferredSize().height;
while (rowColHeight.size() <= row) {
rowColHeight.add(new ArrayList<Integer>(column));
}
List<Integer> colHeights = rowColHeight.get(row);
while (colHeights.size() <= column) {
colHeights.add(0);
}
colHeights.set(column, prefH);
int maxH = prefH;
for (Integer colHeight : colHeights) {
if (colHeight > maxH) {
maxH = colHeight;
}
}
if (table.getRowHeight(row) != maxH) {
table.setRowHeight(row, maxH);
}
}
}