Question

public JTable(Object rowData[][], Object columnNames[])
Object rowData[][] = { { "Row1-Column1", "Row1-Column2", "Row1-Column3"},
                       { "Row2-Column1", "Row2-Column2", "Row2-Column3"} };
Object columnNames[] = { "Column One", "Column Two", "Column Three"};
JTable table = new JTable(rowData, columnNames);

我想知道我们是否可以使用链接列表。

Answer 1

以下是使用List<List<String>>代替Object[][]的示例。我使用了一种方法来创建DefaultTableModel并将模型设置为JTable

public DefaultTableModel createModel(List<List<String>> list, String[] columnNames) {

    DefaultTableModel model = new DefaultTableModel(columnNames, 0);
    for (List<String> row : list) {
        model.addRow(row.toArray());
    }

    return model;
}

请参阅DefaultTableModel javadoc

另请参阅我使用Stack

的this answer

完整的跑步计划：

import java.awt.BorderLayout;
import java.util.*;
import javax.swing.*;
import javax.swing.table.DefaultTableModel;

public class TestTable {

    private String[] colNames = { "Col 1", "Col2", "Col3", "Col4", "Col5" };

    private DefaultTableModel model;
    private JTable table;
    private MyStack myStack = new MyStack();
    private List<List<String>> list;


    public TestTable() {
        list = myStack.getList();

        model = createModel(list, colNames);
        table = new JTable(model);


        JFrame frame = new JFrame();
        frame.add(new JScrollPane(table), BorderLayout.CENTER);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }

    public DefaultTableModel createModel(List<List<String>> list, String[] columnNames) {

        DefaultTableModel model = new DefaultTableModel(columnNames, 0);
        for (List<String> row : list) {
            model.addRow(row.toArray());
        }

        return model;
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                new TestTable();
            }
        });
    }
}

class MyStack {
    public List<List<String>> list = new ArrayList<List<String>>();

    public MyStack() {
        int k = 1;
        for (int i = 0; i < 20; i++) {
            List<String> innerList= new ArrayList<String>();
            for (int j = 0; j < 5; j++) {
                innerList.add(String.valueOf( i * k * (j + 1)));
            }
            k++;
            list.add(innerList);
        }
    }

    public List<List<String>> getList() {
        return list;
    }
}

Answer 2

根据Java Docs，它也可以接受向量：http://docs.oracle.com/javase/7/docs/api/javax/swing/JTable.html

另外请注意，您可以将linkedList转换为像yourLinkedList.toArray()这样的单维数组，然后使用单个循环将其复制到二维数组（如果您愿意，可以将其复制到嵌套循环中）。

JTable构造函数可以接受除数组之外的其他数据结构吗？

2 个答案: