如何将char [] []放入jTable？

Question

我很难在jTable中显示二维的char数组。 我正在使用netbeans。

有人可以指导我如何投入： char [] [] wordSet;

进入jTable。

获取错误

这是我得到的错误

(argument mismatch; char[][] cannot be converted to TableModel) constructor JTable.JTable(int,int) is not applicable (argument mismatch; char[][] cannot be converted to int) constructor JTable. JTable(Vector,Vector) is not applicable (argument mismatch; char[][] cannot be converted to Vector) constructor JTable. JTable(Object[][],Object[]) is not applicable (argument mismatch; char[][] cannot be converted to Object[][])

使用后：

JTable table = new JTable(w.getPuzzleSet(), "Puzzle");

Answer 1

使用Object而不是char。例如。而不是

char[][] charTable = {{'a', 'b', 'c'},{'d', 'e','f'}};

使用

Object[][] charTable = {{'a', 'b', 'c'},{'d', 'e','f'}};

正如@nachokk所说，你也可以使用Character

Character[][] charTable = {{'a', 'b', 'c'},{'d', 'e','f'}};

char[][]与Object[][]不同，因为char是基元。 JTable使用Object[][]和Vector构建代码，没有char[][]

示例

import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;

public class CharTable extends JPanel{
    private static final int DIM_WIDTH = 500;
    private static final int DIM_HEIGHT = 500;

    Object[][] charTable = {{'a', 'b', 'c'},{'d', 'e','f'}};
    String[] colNames = {"col1", "col2", "col3"};

    public CharTable(){
        add(new JScrollPane(new JTable(charTable, colNames)));
    }

    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D)g;
    }

    public static void createAndShowGui(){
        JFrame frame = new JFrame();
        frame.add(new CharTable());
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLocationByPlatform(true);
        frame.pack();
        frame.setVisible(true);

    }

    public Dimension getPreferredSize(){
        return new Dimension(DIM_WIDTH, DIM_HEIGHT);
    }

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

Answer 2

您可以通过执行以下操作将char [] []转换为Object [] []：

char[][] wordSet = { {'a', 'b'},{'c', 'd'} };
String[] header = {"one", "two"};

Object[][] objectSet = new Object[wordSet.length][wordSet[0].length];

for (int i = 0; i < wordSet.length; i++) {
    for (int j = 0; j < wordSet[0].length; j ++) {
        objectSet[i][j] = wordSet[i][j];
    }
}

JTable table = new JTable(objectSet, header);