我的要求是顯示網格中的StockQuote符號(流數據)。 對此已選擇JTable
。DefaultTableModel setValueAt引發ArrayIndexOutOfboundsException
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Random;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.Timer;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.table.DefaultTableModel;
public class Preethi {
protected void initUI() {
final Random random = new Random();
final DefaultTableModel model = new DefaultTableModel(new String[] { "Id", "Name", "Desg", "Sal" }, 0);
final JTable table = new JTable(model);
table.setFillsViewportHeight(true);
JFrame frame = new JFrame(Preethi.class.getSimpleName());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JScrollPane scrollpane = new JScrollPane(table);
frame.add(scrollpane, BorderLayout.CENTER);
frame.pack();
frame.setVisible(true);
Random ran = new Random(12);
ran.nextFloat();
String str = new String("sss");
String[] socrates = {str, str, str };
model.addRow(socrates);
System.out.println(model.getRowCount());
System.out.println(model.getColumnCount());
model.setValueAt(new Object[]{"ewqeq","rtgre","gfdgd","mbmnb"}, 1, 4);
}
public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException,
UnsupportedLookAndFeelException {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new Preethi().initUI();
}
});
}
}
第一個錯誤:您的Employee類具有靜態變量和靜態getter,但實例設置器。這是沒有意義的。整個擺脫靜態。 –
什麼是問題? – Amarnath