I'm trying to update a jTable in another class and from what i've have come up with is to make a DefaultTableModel. I understand how to make it I just don't know how to pass the reference properly through another class.
How I have it setup
public void getWeekInfo(JTable display, int wk) {
try {
file = new Scanner(log);
} catch (FileNotFoundException ex) {
Logger.getLogger(fileTimeEdit.class.getName()).log(Level.SEVERE, null, ex);
}
file.nextLine();
table = (DefaultTableModel) display.getModel();
if (file.next().equals("START") && file.nextInt() == wk) {
file.nextLine();
while (file.next().equals("SESSION")) {
table.addRow(new Object[]{file.next(), file.next(), file.next()});
file.nextLine();
}
}
else
while(!(file.next().equals("START")) && file.nextInt() != wk)
file.nextLine();
}
and in the class that holds the jTable
private void jWeek1ActionPerformed(java.awt.event.ActionEvent evt) {
//table = (DefaultTableModel) jFileData.getModel();
edit.getWeekInfo(jFileData, 1);
//edit.getWeekInfo(jFileData, (1));
}
i've tried creating the default model before passing it and changing the parameters of getWeekInfo from
getWeekInfo(JTable display, int wk)
to
getWeekInfo(DefaultTableModel display, int wk)
but I keep getting the error java.lang.NullPointerException even though I know I have created a pointer or reference, and I have not found any other question retaining to mine, which is why I don't consider this question a duplicate.
file containing jWeek1ActionPerformed
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import javax.swing.SwingUtilities;
import javax.swing.table.DefaultTableModel;
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author princ
*/
public final class timeKeepReview extends javax.swing.JFrame {
private fileTimeEdit edit;
private DefaultTableModel table;
public timeKeepReview() {
//this.table = (DefaultTableModel) jFileData.getModel();
initComponents();
disableRadioButtons();
addComponentListener(new ComponentAdapter() {
@Override
public void componentHidden(ComponentEvent e) {
}
@Override
public void componentShown(ComponentEvent e) {
}
});
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jWeekGroup = new javax.swing.ButtonGroup();
jPanel1 = new javax.swing.JPanel();
jScrollPane1 = new javax.swing.JScrollPane();
jFileData = new javax.swing.JTable();
jWeek1 = new javax.swing.JRadioButton();
jWeek2 = new javax.swing.JRadioButton();
jWeek3 = new javax.swing.JRadioButton();
jWeek4 = new javax.swing.JRadioButton();
jWeek = new javax.swing.JLabel();
jWeek5 = new javax.swing.JRadioButton();
jWeek6 = new javax.swing.JRadioButton();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jMenuBar1 = new javax.swing.JMenuBar();
jMenuFile = new javax.swing.JMenu();
jMenuEdit = new javax.swing.JMenu();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setMinimumSize(new java.awt.Dimension(500, 396));
setPreferredSize(new java.awt.Dimension(677, 476));
jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder("Six Week Data Collection"));
jFileData.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
},
new String [] {
"Date", "Time Started", "Duration"
}
) {
Class[] types = new Class [] {
java.lang.String.class, java.lang.String.class, java.lang.String.class
};
boolean[] canEdit = new boolean [] {
false, false, false
};
public Class getColumnClass(int columnIndex) {
return types [columnIndex];
}
public boolean isCellEditable(int rowIndex, int columnIndex) {
return canEdit [columnIndex];
}
});
jScrollPane1.setViewportView(jFileData);
jWeekGroup.add(jWeek1);
jWeek1.setText("1st Week");
jWeek1.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
jWeek1.setHorizontalTextPosition(javax.swing.SwingConstants.LEFT);
jWeek1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jWeek1ActionPerformed(evt);
}
});
jWeekGroup.add(jWeek2);
jWeek2.setText("2nd Week");
jWeek2.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
jWeek2.setHorizontalTextPosition(javax.swing.SwingConstants.LEFT);
jWeekGroup.add(jWeek3);
jWeek3.setText("3rd Week");
jWeek3.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
jWeek3.setHorizontalTextPosition(javax.swing.SwingConstants.LEFT);
jWeekGroup.add(jWeek4);
jWeek4.setText("4th Week");
jWeek4.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
jWeek4.setHorizontalTextPosition(javax.swing.SwingConstants.LEFT);
jWeek.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
jWeek.setText("Week Period");
jWeekGroup.add(jWeek5);
jWeek5.setText("5tn Week");
jWeek5.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
jWeek5.setHorizontalTextPosition(javax.swing.SwingConstants.LEFT);
jWeekGroup.add(jWeek6);
jWeek6.setText("6th Week");
jWeek6.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
jWeek6.setHorizontalTextPosition(javax.swing.SwingConstants.LEFT);
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(6, 6, 6)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jWeek1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jWeek4, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jWeek5, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jWeek6, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jWeek3, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 89, Short.MAX_VALUE)))
.addComponent(jWeek, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
.addGap(4, 4, 4)
.addComponent(jWeek2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 451, Short.MAX_VALUE))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addComponent(jWeek, javax.swing.GroupLayout.DEFAULT_SIZE, 35, Short.MAX_VALUE)
.addGap(7, 7, 7)
.addComponent(jWeek1, javax.swing.GroupLayout.DEFAULT_SIZE, 42, Short.MAX_VALUE)
.addGap(18, 18, 18)
.addComponent(jWeek2, javax.swing.GroupLayout.DEFAULT_SIZE, 42, Short.MAX_VALUE)
.addGap(18, 18, 18)
.addComponent(jWeek3, javax.swing.GroupLayout.DEFAULT_SIZE, 42, Short.MAX_VALUE)
.addGap(18, 18, 18)
.addComponent(jWeek4, javax.swing.GroupLayout.DEFAULT_SIZE, 42, Short.MAX_VALUE)
.addGap(18, 18, 18)
.addComponent(jWeek5, javax.swing.GroupLayout.DEFAULT_SIZE, 42, Short.MAX_VALUE)
.addGap(18, 18, 18)
.addComponent(jWeek6, javax.swing.GroupLayout.DEFAULT_SIZE, 42, Short.MAX_VALUE)
.addContainerGap())
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 0, Short.MAX_VALUE)
);
jButton1.setText("jButton1");
jButton2.setText("jButton2");
jMenuFile.setText("File");
jMenuBar1.add(jMenuFile);
jMenuEdit.setText("Edit");
jMenuBar1.add(jMenuEdit);
setJMenuBar(jMenuBar1);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGap(20, 20, 20)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jButton1)
.addComponent(jButton2))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(55, 55, 55)
.addComponent(jButton1)
.addGap(36, 36, 36)
.addComponent(jButton2))
.addGroup(layout.createSequentialGroup()
.addGap(14, 14, 14)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
.addContainerGap())
);
pack();
}// </editor-fold>
private void jWeek1ActionPerformed(java.awt.event.ActionEvent evt) {
//table = (DefaultTableModel) jFileData.getModel();
edit.getWeekInfo(jFileData, 1);
//edit.getWeekInfo(jFileData, (1));
//table.addRow(new Object[] {1,2,3});
}
public void disableRadioButtons(){
jWeek1.setEnabled(false);
jWeek2.setEnabled(false);
jWeek3.setEnabled(false);
jWeek4.setEnabled(false);
jWeek5.setEnabled(false);
jWeek6.setEnabled(false);
jFileData.setEnabled(false);
}
public void enableWeek(int wk){
jFileData.setEnabled(true);
switch(wk)
{
case 1: jWeek1.setEnabled(true); break;
case 2: jWeek2.setEnabled(true); break;
case 3: jWeek3.setEnabled(true); break;
case 4: jWeek4.setEnabled(true); break;
case 5: jWeek5.setEnabled(true); break;
case 6: jWeek6.setEnabled(true); break;
}
}
public void appendTable(String date, String time, String duration){
DefaultTableModel table = (DefaultTableModel) jFileData.getModel();
table.addRow(new Object[] {date, time, duration});
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(timeKeepReview.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(timeKeepReview.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(timeKeepReview.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(timeKeepReview.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new timeKeepReview().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JTable jFileData;
private javax.swing.JMenuBar jMenuBar1;
private javax.swing.JMenu jMenuEdit;
private javax.swing.JMenu jMenuFile;
private javax.swing.JPanel jPanel1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JLabel jWeek;
private javax.swing.JRadioButton jWeek1;
private javax.swing.JRadioButton jWeek2;
private javax.swing.JRadioButton jWeek3;
private javax.swing.JRadioButton jWeek4;
private javax.swing.JRadioButton jWeek5;
private javax.swing.JRadioButton jWeek6;
private javax.swing.ButtonGroup jWeekGroup;
// End of variables declaration
}
and the error
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at timeKeepReview.jWeek1ActionPerformed(timeKeepReview.java:226)
at timeKeepReview.access$000(timeKeepReview.java:18)
at timeKeepReview$3.actionPerformed(timeKeepReview.java:106)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.JToggleButton$ToggleButtonModel.setPressed(JToggleButton.java:308)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6533)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6298)
at java.awt.Container.processEvent(Container.java:2236)
at java.awt.Component.dispatchEventImpl(Component.java:4889)
at java.awt.Container.dispatchEventImpl(Container.java:2294)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
at java.awt.Container.dispatchEventImpl(Container.java:2280)
at java.awt.Window.dispatchEventImpl(Window.java:2746)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.awt.EventQueue$4.run(EventQueue.java:729)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
