now course list is sorted

src/io/scheduler/data/Course.java

@@ -9,7 +9,7 @@
 import com.j256.ormlite.table.DatabaseTable;
 
 @DatabaseTable(tableName = "courses")
-public class Course {
+public class Course implements Comparable<Course> {
 
 	public static final String CODE_FIELD_NAME = "code";
 	public static final String NAME_FIELD_NAME = "name";
@@ -178,4 +178,9 @@ public boolean hasCoRequisiteRestriction(Schedule s) throws SQLException {
 	public boolean hasCoRequisite() {
 		return coReq != null;
 	}
+
+	@Override
+	public int compareTo(Course o) {
+		return toString().compareTo(o.toString());
+	}
 }

src/io/scheduler/gui/OptionSUClass.java

@@ -40,7 +40,7 @@
 public class OptionSUClass {
 	private int option;
 	private DefaultListModel<SUClass> listModelSUClass;
-	private DefaultListModel<Course> listModelCourse;
+	private SortedListModel<Course> listModelCourse;
 	private DefaultListModel<Meeting> listModelMeeting;
 	private JList<Course> jListCourse;
 	private JList<SUClass> jListSUClass;
@@ -284,7 +284,7 @@ private JScrollPane createScrollMeeting() {
 	}
 
 	private JScrollPane createScrollCourse() {
-		listModelCourse = new DefaultListModel<Course>();
+		listModelCourse = new SortedListModel<Course>();
 		jListCourse = new JList<Course>(listModelCourse);
 		jListCourse.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
 		JScrollPane returnVal = new JScrollPane(jListCourse);
@@ -296,7 +296,7 @@ private void fillScrollCourse() {
 		for (SUClass suClass : filteredSuClasses) {
 			Course course = suClass.getCourse();
 			if (course != null && !listModelCourse.contains(course)) {
-				listModelCourse.addElement(course);
+				listModelCourse.add(course);
 			}
 		}
 		if (!listModelCourse.isEmpty()) {

src/io/scheduler/gui/SortedListModel.java

@@ -0,0 +1,77 @@
+package io.scheduler.gui;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.SortedSet;
+import java.util.TreeSet;
+
+import javax.swing.AbstractListModel;
+
+public class SortedListModel<E> extends AbstractListModel<E> {
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = 6150903636354738067L;
+	SortedSet<E> model;
+
+	public SortedListModel() {
+		model = new TreeSet<E>();
+	}
+
+	@Override
+	public int getSize() {
+		return model.size();
+	}
+
+	@Override
+	@SuppressWarnings("unchecked")
+	public E getElementAt(int index) {
+		return (E) model.toArray()[index];
+	}
+
+	public void add(E element) {
+		if (model.add(element)) {
+			fireContentsChanged(this, 0, getSize());
+		}
+	}
+
+	public void addAll(E elements[]) {
+		Collection<E> c = Arrays.asList(elements);
+		model.addAll(c);
+		fireContentsChanged(this, 0, getSize());
+	}
+
+	public void clear() {
+		model.clear();
+		fireContentsChanged(this, 0, getSize());
+	}
+
+	public boolean contains(E element) {
+		return model.contains(element);
+	}
+
+	public Object firstElement() {
+		return model.first();
+	}
+
+	public Iterator<E> iterator() {
+		return model.iterator();
+	}
+
+	public E lastElement() {
+		return model.last();
+	}
+
+	public boolean removeElement(E element) {
+		boolean removed = model.remove(element);
+		if (removed) {
+			fireContentsChanged(this, 0, getSize());
+		}
+		return removed;
+	}
+
+	public boolean isEmpty() {
+		return model.isEmpty();
+	}
+}