Java 8 med JTable giver problemer/Error
Java 8 med JTable giver problemer/ErrorJeg har installeret Java 8 (jdk-8u25-windows-i586.exe) med tilhørende jre fra Oracle.
Herefter kan jeg ikke anvende JTable i mine programmer.
Jeg anvender Windows 7 32 bit
Som udviklingsmiljø anvendes Eclipse 3.70 Indigo.
og som sagt jdk-8u25-windows-i586.exe
Følgende fejl får jeg:
import javax.swing.JTable; Giver Error
import javax.swing.table.*; Er Ok
JTable tableView = new JTable(sorter); Giver Error uanset hvilken import der anvendes.
Når jeg læser dokumentationen (jdk-8u25-docs-all.zip) står der:
- at klassen "Class JTable" / "javax.swing.JTable" findes.
(\jdk-8u25-docs-all\api\javax\swing\JTable.html)
- I afsnittet "\jdk-8u25-docs-all\api\index.html" står der:
javax.swing.table >> Provides classes and interfaces for
dealing with javax.swing.JTable.
(og i dette afsnit er javax.swing.JTable ikke nævnt.)
Når jeg prøver Oracle demo-programmer (jdk-8u25-windows-i586-demos.zip) fåes følgende:
- For eksempel når jeg prøver programmet: TableExample3.java i
"\jdk1.8.0_25 Demo\demo\jfc\TableExample\src.zip\" giver det
fejl ved linien "JTable tableView = new JTable(sorter);"
ligesom de øvrige eksempler giver fejl med JTable.
Er der nogle der har en løsning / workaround på ovennævnte problem.
For letheds skyld er nedenstående en kopi af TableExample3.java,
hvor linien "JTable tableView = new JTable(sorter);" giver fejl.
import javax.swing.*;
import javax.swing.table.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.Dimension;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.UIManager.LookAndFeelInfo;
/**
* An example showing the JTable with a dataModel that is not derived
* from a database. We add the optional TableSorter object to give the
* JTable the ability to sort.
*
* @author Philip Milne
*/
public class TableExample3 {
public TableExample3() {
JFrame frame = new JFrame("Table");
frame.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
// Take the dummy data from SwingSet.
final String[] names = { "First Name", "Last Name", "Favorite Color",
"Favorite Number", "Vegetarian" };
final Object[][] data = {
{ "Mark", "Andrews", "Red", new Integer(2), Boolean.TRUE },
{ "Tom", "Ball", "Blue", new Integer(99), Boolean.FALSE },
{ "Alan", "Chung", "Green", new Integer(838), Boolean.FALSE },
{ "Jeff", "Dinkins", "Turquois", new Integer(8), Boolean.TRUE },
{ "Amy", "Fowler", "Yellow", new Integer(3), Boolean.FALSE },
{ "Brian", "Gerhold", "Green", new Integer(0), Boolean.FALSE },
{ "James", "Gosling", "Pink", new Integer(21), Boolean.FALSE },
{ "David", "Karlton", "Red", new Integer(1), Boolean.FALSE },
{ "Dave", "Kloba", "Yellow", new Integer(14), Boolean.FALSE },
{ "Peter", "Korn", "Purple", new Integer(12), Boolean.FALSE },
{ "Phil", "Milne", "Purple", new Integer(3), Boolean.FALSE },
{ "Dave", "Moore", "Green", new Integer(88), Boolean.FALSE },
{ "Hans", "Muller", "Maroon", new Integer(5), Boolean.FALSE },
{ "Rick", "Levenson", "Blue", new Integer(2), Boolean.FALSE },
{ "Tim", "Prinzing", "Blue", new Integer(22), Boolean.FALSE },
{ "Chester", "Rose", "Black", new Integer(0), Boolean.FALSE },
{ "Ray", "Ryan", "Gray", new Integer(77), Boolean.FALSE },
{ "Georges", "Saab", "Red", new Integer(4), Boolean.FALSE },
{ "Willie", "Walker", "Phthalo Blue", new Integer(4), Boolean.FALSE },
{ "Kathy", "Walrath", "Blue", new Integer(8), Boolean.FALSE },
{ "Arnaud", "Weber", "Green", new Integer(44), Boolean.FALSE }
};
// Create a model of the data.
@SuppressWarnings("serial")
TableModel dataModel = new AbstractTableModel() {
// These methods always need to be implemented.
public int getColumnCount() {
return names.length;
}
public int getRowCount() {
return data.length;
}
public Object getValueAt(int row, int col) {
return data[row][col];
}
// The default implementations of these methods in
// AbstractTableModel would work, but we can refine them.
@Override
public String getColumnName(int column) {
return names[column];
}
@Override
public Class getColumnClass(int col) {
return getValueAt(0, col).getClass();
}
@Override
public boolean isCellEditable(int row, int col) {
return (col == 4);
}
@Override
public void setValueAt(Object aValue, int row, int column) {
data[row][column] = aValue;
}
};
// Instead of making the table display the data as it would normally
// with:
// JTable tableView = new JTable(dataModel);
// Add a sorter, by using the following three lines instead of the one
// above.
TableSorter sorter = new TableSorter(dataModel);
JTable tableView = new JTable(sorter);
sorter.addMouseListenerToHeaderInTable(tableView);
JScrollPane scrollpane = new JScrollPane(tableView);
scrollpane.setPreferredSize(new Dimension(700, 300));
frame.getContentPane().add(scrollpane);
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
// Trying to set Nimbus look and feel
try {
for (LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (Exception ex) {
Logger.getLogger(TableExample3.class.getName()).log(Level.SEVERE,
"Failed to apply Nimbus look and feel", ex);
}
new TableExample3();
}
}
Hilsen Erik Steen
