I'm having a hard time getting a text file to open up when I right click on a row in my JTable. I'm currently using JOptionPane.showMessageDialog to show the text file but it's not working.
The error's I'm getting:
Exception in thread "AWT-EventQueue-0" java.lang.OutOfMemoryError: Java heap space
at java.util.Arrays.copyOf(Unknown Source)
at java.lang.AbstractStringBuilder.expandCapacity(Unknown Source)
at java.lang.AbstractStringBuilder.ensureCapacityInternal(Unknown Source)
at java.lang.AbstractStringBuilder.appendNull(Unknown Source)
at java.lang.AbstractStringBuilder.append(Unknown Source)
at java.lang.StringBuilder.append(Unknown Source)
at RowPopup$1.actionPerformed(JtableTest.java:183)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.AbstractButton.doClick(Unknown Source)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(Unknown Source)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$500(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
Here's my code:
import javax.swing.table.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
import java.awt.*;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
public class JtableTest {
public static void main(String[] args) {
Runnable r = new Runnable() {
public void run() {
new JtableTest ().createUI();
}
};
EventQueue.invokeLater(r);
}
void createUI() {
try {
JFrame frame = new JFrame();
frame.setLayout(new BorderLayout());
JTable table = new JTable();
String readLine = null;
File file = new File ("JtableTestDB.txt");
FileReader reader = new FileReader(file);
BufferedReader bufReader = new BufferedReader(reader);//Need to close this
List<Dentry> dataList = new ArrayList<Dentry>();
while ((readLine = bufReader.readLine()) != null) {
String[] splitData = readLine.split(";");
Dentry dentry = new Dentry();
dentry.setName(splitData[0]);
dentry.setNumbers(Arrays.copyOfRange(splitData, 1, splitData.length));
dataList.add(dentry);
}
DatabaseTableModel tableModel = new DatabaseTableModel();
tableModel.setList(dataList);////////////
table.setModel(tableModel);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new JScrollPane(table));
frame.setTitle("File to JTable");
frame.pack();
frame.setVisible(true);
final RowPopup pop=new RowPopup(table);
table.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent me)
{
//determine if right clicked
if(SwingUtilities.isRightMouseButton(me))
{
pop.show(me.getComponent(), me.getX(), me.getY());
}
}
});
} catch(IOException ex) {}
}
class Dentry {
private String name;
private String[] number;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getNumber(int index) {
String value = null;
if (index >= 0 && index < number.length) {
value = number[index];
}
return value;
}
public void setNumbers(String... number) {
this.number = number;
}
}
class DatabaseTableModel extends AbstractTableModel {
private List<Dentry> list = new ArrayList<Dentry>();
private String[] columnNames = {"1", "2", "3", "4", "5", "6"};
public void setList(List<Dentry> list) {
this.list = list;
fireTableDataChanged();
}
@Override
public String getColumnName(int column) {
return columnNames[column];
}
public int getRowCount() {
return list.size();
}
public int getColumnCount() {
return columnNames.length;
}
public Object getValueAt(int rowIndex, int columnIndex) {
switch (columnIndex) {
case 0:
return list.get(rowIndex).getName();
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
return list.get(rowIndex).getNumber(columnIndex - 1);//return list.get(rowIndex).getNumber(columnIndex);
default:
return null;
}
}
}
}
//public class PopupInRows extends JFrame {
// public PopupInrows()
class RowPopup extends JPopupMenu {
public RowPopup(JTable table) {
JMenuItem view=new JMenuItem("View all Moves");
//When View is clicked
view.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
//JOptionPane.showMessageDialog(view, "View");
try
{
String filetext="",filecontent="";
File file=new File("JtableTestDB2.txt");
FileReader fr=new FileReader(file);
BufferedReader br=new BufferedReader(fr);
StringBuilder sb=new StringBuilder();
while(fr !=null)
{
filetext=br.readLine();
sb.append(filetext);
sb.append("\n");
}
filecontent=sb.toString();
JOptionPane.showMessageDialog(null,"File is"+filecontent);
}
catch(Exception ex){}
}
});
//Add Items to Popup
add(view);
//add(new Jseparator()); //this would make a line and sep
}
}
