I am working on an application in Eclpise and this is the only place I could think of where I could get help. Here is the code in the class affected:
This is the error message:
Tell me if you need code from classes that work with this one.
Thanks!!
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.ArrayList;
public class Main extends JFrame {
Class newClass;
JTabbedPane tab;
JPanel panel1;
JTabbedPane tabbedPane=new JTabbedPane();
int numberStudents;
String numberOfStudents;
JPanel topPanel = new JPanel();
public int classOffset=0;
ArrayList<Class> newClasses=new ArrayList();
public Main()
{
super("Grading System");
setSize(400, 500);
setBounds(600,300,400,550);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel pane = new JPanel();
topPanel.setLayout( new BorderLayout() );
getContentPane().add(topPanel);
newClass();
JToolBar bar=new JToolBar();
JButton addClass=new JButton("class");
addClass.setIcon(new ImageIcon(getClass().getResource("/plus.png")));
addClass.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
newClass();
//JOptionPane.showMessageDialog(null, String.valueOf(selected));
}
} );
bar.add(addClass);
pane.add("North",bar);
add("North",bar);
setVisible(true);
}
private void FileManager(String string, String noOfStudents) {
// TODO Auto-generated method stub
}
public static void main(String[] args) {
Main main=new Main();
}
public void actionPerformed(ActionEvent e) {
Main newClass=new Main();
JOptionPane.showMessageDialog(null, String.valueOf(213124));
}
public void newClass()
{
File f = new File("H:/marker");
f.mkdirs();
try { f.createNewFile(); } catch (IOException e) { e.printStackTrace(); }
String buttonText[]={"Choose","Make"};
int response = JOptionPane.showOptionDialog(null, "Do you wish to choose a class, or make a new one?", "Option Dialouge", 0, JOptionPane.INFORMATION_MESSAGE,null,buttonText,buttonText[0]);
if(response==1)
{
String nameOfClass = JOptionPane.showInputDialog(null, "What do you want to name this class?", JOptionPane.QUESTION_MESSAGE);
String noOfStudents = JOptionPane.showInputDialog(null, "How many students are in the class?", JOptionPane.QUESTION_MESSAGE);
FileManager("H:\\marker\\classes\\"+nameOfClass+"\\settings.txt",noOfStudents);
newClass=new Class("H:\\marker\\classes\\"+nameOfClass,nameOfClass,noOfStudents);
tabbedPane = new JTabbedPane();
tabbedPane.addTab( newClass.returnName(), newClass );
topPanel.add( tabbedPane, BorderLayout.CENTER );
setVisible(true);
add(topPanel);
}
else if(response==0)
{
FileManager fm = new FileManager("H:\\marker\\classes");
Class newClass = null;
newClasses.add(classOffset,newClass);
//newClasses.add(newClass);
while(newClasses.get(classOffset)==null)
{
if(fm.getState()==1){
classOffset+=1;
try {
//numberOfStudents=new String(Files.readAllBytes(Paths.get("H:\\marker\\classes\\"+fm.getSelectedOption()+"\\settings.txt")));
} catch (Exception e) {e.printStackTrace();}
int temp=10;
newClass=new Class("H:\\marker\\classes\\"+fm.getSelectedOption(),fm.getSelectedOption(),temp);
fm.dispose();
tabbedPane.addTab( newClass.returnName(), newClass );
topPanel.add(tabbedPane, BorderLayout.CENTER);
setVisible(true);
add(topPanel);
}
}
}
}
}
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 1, Size: 1 at java.util.ArrayList.rangeCheck(Unknown Source) at java.util.ArrayList.get(Unknown Source) at Main.newClass(Main.java:92) at Main.<init>(Main.java:32) at Main.main(Main.java:57)
