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| public class JTableDoubleExemple {
public static void main(String[] args) {
JFrame frame = new JFrame("Démo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Object[][] data = new Object[3][4];
for(int i=0; i<data.length; i++) {
for(int j=0; j<data[i].length; j++) {
if ( i%2 == 1 ) {
data[i][j]=250000000.519d;
}
else {
data[i][j]=250000000d;
}
}
}
String[] columns = {"A","B","C","D"};
JTable table = new JTable(data, columns);
DefaultTableCellRenderer decimalFormatRenderer = new DefaultTableCellRenderer() {
private DecimalFormat format = new DecimalFormat("#,##0.00");
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
value = format.format(value);
return super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
}
};
table.getColumnModel().getColumn(0).setCellRenderer(decimalFormatRenderer);
DefaultTableCellRenderer numberFormatRenderer = new DefaultTableCellRenderer() {
private NumberFormat format = NumberFormat.getInstance();
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
value = format.format(value);
return super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
}
};
table.getColumnModel().getColumn(1).setCellRenderer(numberFormatRenderer);
DefaultTableCellRenderer stringFormatRenderer = new DefaultTableCellRenderer() {
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
value = String.format("%f",value);
return super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
}
};
table.getColumnModel().getColumn(2).setCellRenderer(stringFormatRenderer);
DefaultTableCellRenderer stringFormatRenderer2 = new DefaultTableCellRenderer() {
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
value = String.format("%4.2f",value);
return super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
}
};
table.getColumnModel().getColumn(3).setCellRenderer(stringFormatRenderer2);
frame.add(table);
frame.setSize(600, 400);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
} |
