Question

我已经开始了一个小小的项目来学习如何提取Web数据并学习如何使用Java表。第一次使用表格和2D数组，所以我可能会以错误的方式解决这个问题。我试图从站点提取数据并将其输入到表中，到目前为止我已经能够获取数据。我将数据输入到一个由逗号和新行（csv）分隔的字符串中，称为scheduleCsv

Sun 02-16-14 09:45 PM,1,REAL TIRED,JUST WACK AT IT,2 - 4,
Sun 02-23-14 08:10 PM,1,BALLERS,REAL TIRED,4 - 11,
Sun 03-02-14 09:00 PM,1,REAL TIRED,EL TRI,1 - 7,
Sun 03-09-14 05:50 PM,1,GO GO POWER RANGERS,REAL TIRED,4 - 9,
Sun 03-16-14 06:40 PM,1,REAL TIRED,GAME OF GROANS,
Sun 03-23-14 09:00 PM,1,HUNGOVER HAT TRICKS,REAL TIRED,
Sun 03-30-14 07:25 PM,1,REAL TIRED,PRESTIGE WORLD WIDE,
Sun 04-06-14 04:20 PM,1,REAL TIRED,BALLERS,

是否可以将此数据输入JTable？我尝试了几种不同的方法来搜索，到目前为止都没有成功。我有另一个数组指定列名

String[] columnNames = {"Date","Field", "Home Team","Visitor Team", "Score"};

我的表格设置如此

final JTable scheduleTable = new JTable(data,columnNames);

我相信＆＃34;数据＆＃34;应该是2D数组..？

Answer 1

根据数据的获取方式，这应该不会那么困难：

如果您有一个字符串，则将其拆分为"\n"以获取单独的行
如果您有单独的行，请按,拆分以获取单独的列

一个例子：

import java.util.Arrays;

import javax.swing.JFrame;
import javax.swing.JTable;
import javax.swing.SwingUtilities;

public class TableContentsTest
{
    public static void main(String[] args)
    {
        SwingUtilities.invokeLater(new Runnable()
        {
            @Override
            public void run()
            {
                createAndShowGUI();
            }
        });
    }

    private static void createAndShowGUI()
    {
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        String[] columnNames = {"Date","Field", "Home Team","Visitor Team", "Score"};
        String[][] contents = createTableContents();
        JTable table = new JTable(contents, columnNames);

        f.getContentPane().add(table);
        f.setSize(400,400);
        f.setLocationRelativeTo(null);
        f.setVisible(true);

    }
    public static String[][] createTableContents()
    {
        String input = 
            "Sun 02-16-14 09:45 PM,1,REAL TIRED,JUST WACK AT IT,2 - 4,"+"\n"+
            "Sun 02-23-14 08:10 PM,1,BALLERS,REAL TIRED,4 - 11,"+"\n"+
            "Sun 03-02-14 09:00 PM,1,REAL TIRED,EL TRI,1 - 7,"+"\n"+
            "Sun 03-09-14 05:50 PM,1,GO GO POWER RANGERS,REAL TIRED,4 - 9,"+"\n"+
            "Sun 03-16-14 06:40 PM,1,REAL TIRED,GAME OF GROANS,"+"\n"+
            "Sun 03-23-14 09:00 PM,1,HUNGOVER HAT TRICKS,REAL TIRED,"+"\n"+
            "Sun 03-30-14 07:25 PM,1,REAL TIRED,PRESTIGE WORLD WIDE,"+"\n"+
            "Sun 04-06-14 04:20 PM,1,REAL TIRED,BALLERS,"+"\n";

        String[] lines = input.split("\n");
        String result[][] = new String[lines.length][];
        for (int i=0; i<lines.length; i++)
        {
            result[i] = Arrays.copyOf(lines[i].split(","), 5);
        }
        return result;
    }
}

Answer 2

正如Max谷歌所说，有很多很好的教程。例如： http://docs.oracle.com/javase/tutorial/uiswing/components/table.html

要读取cvs文件，我建议你加载到List而不是数组。

如何将数据转换为2D数组以放入表中

2 个答案: