Java:JTable 中的控制台输出

Question

程序应在 JTable 中列出卷。

例如:我从 vollist.java 类获得此输出。

while (volumeIter.hasNext()) {
    volume = volumeIter.next();
    System.out.println(volume.getName());
}

控制台输出:

vol1
vol2
vol3
...

如何在我的 JTable 中获取此控制台输出。

table = new JTable();
table.setModel(new DefaultTableModel(
    new Object[][] {
        {null, vollist.volname(null), null, null, null},
        {null, vollist.volname(null), null, null, null},
        {null, vollist.volname(null), null, null, null},
    },
    new String[] {
        "Nr:", "Volume Name", "TotalSize [MB]", "Used [MB]", "Status"
    }
));

只显示 row1 -> vol1 row2 -> vol1 ......我怎样才能得到像控制台 row1 -> vol1 row2 -> vol2 (向上计数)那样的输出

Answer 1

定义并实现您的 TableModel(在本例中扩展 AbstractTableModel)

这更广泛，但是是 OOP 强类型。

class VolumeTableModel extends AbstractTableModel {
    private String[] columnNames = {"Nr:", "Volume Name", "TotalSize [MB]", "Used [MB]", "Status"};
    private ArrayList<Volume> volumes;

    public VolumeTableModel(ArrayList<Volume> volumes) {
        this.volumes = volumes;
    }

    public VolumeTableModel() {
        volumes = new ArrayList<Volume>();
    }

    public void addVolume(Volume volume) {
        volumes.add(volume);
        fireTableRowsInserted(volumes.size()-1, volumes.size()-1);
    }

    public int getColumnCount() {
        return columnNames.length;
    }

    public int getRowCount() {
        return volumes.size();
    }

    public String getColumnName(int col) {
        return columnNames[col];
    }

    public Object getValueAt(int row, int col) {
        Volume volume = volumes.get(row);
        switch (col) {
            case 0: return volume.number;
            case 1: return volume.name;
            case 2: return volume.totalSize;
            case 3: return volume.usedSize;
            case 4: return volume.status;
            default: return null;
        }
    }

    public Class getColumnClass(int col) {
        return String.class;
        //or just as example
        switch (col) {
            case 0: return Integer.class;
            case 1: return String.class;
            case 2: return Integer.class;
            case 3: return Integer.class;
            case 4: return String.class;
            default: return String.class;
        }
    }
}

并将其指定为表的 TableModel

//if you have the Volume ArrayList
VolumeTableModel myTableModel = new VolumeTableModel(volumesArrayList);
//if you dont have the Volume ArrayList
VolumeTableModel myTableModel = new VolumeTableModel();
myTableModel.addVolume(volume);
JTable table = new JTable(myTableModel);

一些来源来自 http://docs.oracle.com/javase/tutorial/uiswing/components/table.html#data