如何設置TableLayout的單元格垂直和水平對齊方式

Question

有沒有一種方法可以在TableLayout的單元格中設置對齊方式？

如果要將單元格中的組件設置為例如右下角？

Answer 1

這是使用TableLayoutConstraints的示例：

import javax.swing.JButton;
import javax.swing.JFrame;
import layout.TableLayout;
import layout.TableLayoutConstraints;

public class TableLayoutCellAlignmentExample {

    public static void main(String args[]) {

        JFrame frame = new JFrame("Example of TableLayout");
        frame.setSize(700, 400);

        double size[][] = {{200,200,200}, // Columns
            {100,100,100}}; // Rows

        frame.setLayout(new TableLayout(size));


        String[] labels = {
            "should be TOP LEFT",
            "should be TOP CENTER",
            "should be TOP RIGHT",
            "should be MIDDLE LEFT",
            "should be MIDDLE CENTER",
            "should be MIDDLE RIGHT",
            "should be BOTTOM LEFT",
            "should be BOTTOM CENTER",
            "should be BOTTOM RIGHT",
        };

        frame.add(new JButton(labels[0]), new TableLayoutConstraints(0, 0, 0, 0, TableLayout.LEFT, TableLayout.TOP));
        frame.add(new JButton(labels[1]), new TableLayoutConstraints(1, 0, 1, 0, TableLayout.CENTER, TableLayout.TOP));
        frame.add(new JButton(labels[2]), new TableLayoutConstraints(2, 0, 2, 0, TableLayout.RIGHT, TableLayout.TOP));
        frame.add(new JButton(labels[3]), new TableLayoutConstraints(0, 1, 0, 1, TableLayout.LEFT, TableLayout.CENTER));
        frame.add(new JButton(labels[4]), new TableLayoutConstraints(1, 1, 1, 1, TableLayout.CENTER, TableLayout.CENTER));
        frame.add(new JButton(labels[5]), new TableLayoutConstraints(2, 1, 2, 1, TableLayout.RIGHT, TableLayout.CENTER));
        frame.add(new JButton(labels[6]), new TableLayoutConstraints(0, 2, 0, 2, TableLayout.LEFT, TableLayout.BOTTOM));
        frame.add(new JButton(labels[7]), new TableLayoutConstraints(1, 2, 1, 2, TableLayout.CENTER, TableLayout.BOTTOM));
        frame.add(new JButton(labels[8]), new TableLayoutConstraints(2, 2, 2, 2, TableLayout.RIGHT, TableLayout.BOTTOM));

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
        frame.pack();
    }
}

結果：