java - 如何设置TableLayout的单元格垂直和水平对齐方式

Question

有没有办法在 TableLayout 的单元格中设置对齐方式？

如果我想将单元格中的组件设置为例如右下角？

Answer 1

这是使用 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();
    }
}

结果: