使JTextField保持与JTable列相同的大小

import javax.swing.DefaultCellEditor;
import javax.swing.JTable;
import javax.swing.JTextField;

public class CustomCellEditor extends DefaultCellEditor {
    public CustomCellEditor() {
        super(new JTextField());
    }

    @Override
    public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
        JTextField textField = (JTextField) super.getTableCellEditorComponent(table, value, isSelected, row, column);
        int columnWidth = table.getColumnModel().getColumn(column).getWidth();
        textField.setPreferredSize(new Dimension(columnWidth, textField.getPreferredSize().height));
        return textField;
    }
}

JTable table = new JTable();
TableColumn column = table.getColumnModel().getColumn(columnIndex);
column.setCellEditor(new CustomCellEditor());