Troubles with inner classes in swing-panel

Question

hi,
I'm having troubles using innner classes as ActionListeners in my swing-panel. I keep getting compile-time errors:
C:\Java programmer\DocGenerator\ListPanel.java:53: cannot resolve symbol
symbol : class Actionlistener
location: class ListPanel.RemoveListener
     class RemoveListener implements Actionlistener {
^
C:\Java programmer\DocGenerator\ListPanel.java:33: addActionListener(java.awt.event.ActionListener) in javax.swing.AbstractButton cannot be applied to (ListPanel.RemoveListener)
          removeButton.addActionListener(new RemoveListener());
^
2 errors
Here is the source code:
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
class ListPanel extends JPanel implements ListSelectionListener{
     private JButton addButton = new JButton("add");     
     private JButton removeButton = new JButton("remove");
     private JButton resetButton = new JButton("reset");
     private JList list;
     private DefaultListModel listModel;
     public ListPanel(){
          listModel = new DefaultListModel();
          listModel.addElement("nummer1");
          listModel.addElement("nummer2");
          list = new JList(listModel);
          list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
          list.setSelectedIndex(0);
          list.addListSelectionListener(this);
          JScrollPane listScrollPane = new JScrollPane(list);
          setLayout(new GridLayout(1,2));
          JPanel buttons = new JPanel();
          buttons.setLayout(new GridLayout(3,1));
//          addButton.addActionListener(this);
          removeButton.addActionListener(new RemoveListener());
//          resetButton.addActionListener(this);
          buttons.add(addButton);
          buttons.add(removeButton);
          buttons.add(resetButton);
          list.setBorder(BorderFactory.createLineBorder(Color.black,3));
          add(buttons);
          add(list);
     public void actionPerformed(ActionEvent e){
          System.out.println(e);
     public void valueChanged(ListSelectionEvent e){
     class RemoveListener implements Actionlistener {
          public void actionPerformed(ActionEvent e){
               int index = list.getSelectedIndex();
               listModel.remove(index);
               int size = listModel.getSize();
               if(size==0){
                    addButton.setEnabled(false);
               } else {
                    if (index==listModel.getSize())
                         index--;
                    list.setSelectedIndex(index);

Answer 1

Both of the errors is because Actionlistener is not the same as ActionListener. Note the capital 'L' there!