Accessing a different class using ActionPerformed

Question

hi
im trying to access a method in a different class using
public void actionPerformed (ActionEvent e) {
          if(e.getSource() == AuthorCombo) {
               ComboAction();
          else if(e.getSource() == SearchButton){
                    SearchSystem();
}and then using
public class Book extends ViewPanel{
public void SearchSystem(){// this is used to get the information from
                  //the combo boxs whixh can latter show
                  //the data in the text area
tempBookNoList.clear();
          for(int a=0; a<AuthorList.size(); a++) {
                              if(((String)AuthorCombo.getSelectedItem()
                              ==AuthorList.get(a))
                              &&((String)BookCombo.getSelectedItem()
                              ==BookList.get(a))) {
                                   tempBookNoList.add((String)BookNoList.get(a));
                    String result = (String)tempBookNoList.get(a);
                    InfoArea.setText ((String)tempBookNoList.get(a));
}          }//End neither random situation.to manipulate some data within the other class
i keep getting the error
.\ViewPanel.java:314: cannot resolve symbol
symbol : method SearchSystem ()
location: class ViewPanel
                    SearchSystem();
^
1 error
can anyone help me spot the problem

Answer 1

in that case i do not know what could be the cause in this program
the only area i think it could be is when the SearchSystem method in the Book class gets using the Action Performed method in the Viewpanel method, shown below
public class Book extends ViewPanel{
public void SearchSystem(){// this is used to get the information from
                  //the combo boxs whixh can latter show
                  //the data in the text area
          for(int a=0; a<AuthorList.size(); a++) {
                              if(((String)AuthorCombo.getSelectedItem()
                              ==AuthorList.get(a))
                              &&((String)BookCombo.getSelectedItem()
                              ==BookList.get(a))) {
                              InfoArea.setText((String)BookNoList.get(a));
               }which is called using
public void actionPerformed (ActionEvent e) {
          if(e.getSource() == AuthorCombo) {
               ComboAction();
          else if(e.getSource() == SearchButton){
                    theBook.SearchSystem();
}but i cant see this being a problem as it all compiles