Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.Component;

import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;

public class Main {
    public static void main(String[] argv) throws Exception {
        JTable table = new JTable();
        DefaultTableModel model = (DefaultTableModel) table.getModel();

        model.addColumn("A", new Object[] { "item1" });
        model.addColumn("B", new Object[] { "item2" });

        String[] values = new String[] { "1", "2", "3" };

        TableColumn col = table.getColumnModel().getColumn(0);
        col.setCellEditor(new MyComboBoxEditor(values));
        col.setCellRenderer(new MyComboBoxRenderer(values));
    }
}

class MyComboBoxRenderer extends JComboBox implements TableCellRenderer {
    public MyComboBoxRenderer(String[] items) {
        super(items);
    }

    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus,
            int row, int column) {
        if (isSelected) {
            setForeground(table.getSelectionForeground());
            super.setBackground(table.getSelectionBackground());
        } else {
            setForeground(table.getForeground());
            setBackground(table.getBackground());
        }
        setSelectedItem(value);
        return this;
    }
}

class MyComboBoxEditor extends DefaultCellEditor {
    public MyComboBoxEditor(String[] items) {
        super(new JComboBox(items));
    }
}