对齐 JTextArea 中的文本表格表示

Question

我正在创建一个 JTextArea 并向其附加一些换行符分隔的字符串。

它看起来与输入字符串中的实际排列方式不同。

JTextAreaDemo.java

import java.awt.BorderLayout;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextArea;

/**
 *
 * @author dinesh
 */
public class TextAreaDemo {

    public static void main(String[] args) {
        String input
                = "--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------\n"
                + "| Name               | STC Port           | Tx Count (frames)  | Rx Count (frames)  | Tx Rate (fps)      | Rx Rate (fps)      | Tx Count (bits)    | Rx Count (bits)    | Tx Rate (bps)      | Rx Rate (bps) |    \n"
                + "--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------\n"
                + "| vlan105            | 12/5               | 165                | 146                | 5                  | 5                  | 168960             | 149504             | 5120               | 5120 |             \n"
                + "--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------\n"
                + "| vlan104            | 12/5               | 165                | 145                | 5                  | 5                  | 168960             | 148480             | 5120               | 5120 |             \n"
                + "--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------\n"
                + "| vlan105            | 12/6               | 159                | 146                | 5                  | 5                  | 162816             | 144832             | 5120               | 4960 |             \n"
                + "--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------\n"
                + "| vlan104            | 12/6               | 158                | 145                | 5                  | 5                  | 161792             | 143840             | 5120               | 4960 |             \n"
                + "--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------";

        JFrame myFrame = new JFrame("Text");
        JPanel pnlMain = new JPanel(new BorderLayout());
        JTextArea txtArea = new JTextArea();
        pnlMain.add(txtArea);
        txtArea.setEditable(false);
        myFrame.getContentPane().add(pnlMain);
        myFrame.setSize(400, 400);
        myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        myFrame.setVisible(true);
        txtArea.append(input);
    }
}

输出：

如您所见，文本的对齐方式看起来与实际数据不同。

实际数据：

"--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------\n"
"| Name               | STC Port           | Tx Count (frames)  | Rx Count (frames)  | Tx Rate (fps)      | Rx Rate (fps)      | Tx Count (bits)    | Rx Count (bits)    | Tx Rate (bps)      | Rx Rate (bps) |    \n"
"--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------\n"
"| vlan105            | 12/5               | 165                | 146                | 5                  | 5                  | 168960             | 149504             | 5120               | 5120 |             \n"
"--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------\n"
"| vlan104            | 12/5               | 165                | 145                | 5                  | 5                  | 168960             | 148480             | 5120               | 5120 |             \n"
"--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------\n"
"| vlan105            | 12/6               | 159                | 146                | 5                  | 5                  | 162816             | 144832             | 5120               | 4960 |             \n"
"--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------\n"
"| vlan104            | 12/6               | 158                | 145                | 5                  | 5                  | 161792             | 143840             | 5120               | 4960 |             \n"
"--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------"

我放置字符串的方式是每个单元格有 20 个字符宽度。但是，它开始偏离列方面。

我应该怎么做才能使其相应对齐？

Answer 1

出现这种情况是因为文本区域中的比例宽度字体和代码编辑器中的固定宽度字体。看起来你真正想要的是 JTable.

如果你真的需要一个文本区域，我会推荐：

txtArea.setFont(new Font("monospaced", Font.PLAIN, 12));

这将使它像在您的代码编辑器中一样显示。

对齐 JTextArea 中的文本表格表示

Aligning the textual tabular representaion in JTextArea

java

jtextarea

text-alignment