WindowCloser, Exception 1FE, elementsAndMass errors in this code - help?
Hi. I got the following code from Java Programming for Absolute Beginners. I think this book was written for JDK 5, and maybe the issues surrounding this have to do with the fact tha I entered it into JDK 6, but I'm not sure. I've entered it into Eclipse, and am getting messages like: WindowCloser cannot be resolved to a type, Syntax error on token 1F, and elementsAndMass cannot be resolved. I would appreciate any help you could offer.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
public class LabView extends JFrame {
//#1
private JTextArea frameTextArea;//create a text area
private Container frameContainer;//for the content pane
private JScrollPane scrollForTextArea;//scrollbar
private BorderLayout frameLayout;
final int width = 640, height = 480;
//#2
private JMenuBar bar;
private JMenu fileMenu, editMenu, helpMenu, programMenu;
private JMenuItem saveText, closeApp, clearText,
aboutThisApp,
programA,
programB,
programC;
//#3
public LabView(String title) {
//call to JFrame constructor
super(title);
//call initialization
init();
}
public void init() {
//#4
//use the WindowCloser class
addWindowListener(new WindowCloser());
//#5
//set up the window for the operating system
setLookAndFeel();
//#6
//get the content pane
frameContainer = getContentPane();
//create an instance of a JTextArea
frameTextArea = new JTextArea("\n \t Element \t Weight \n", 18, 70);
//configure the JTextArea
frameTextArea.setEditable(false);
frameTextArea.setLineWrap(true);
//set the text area in the scroll pane
scrollForTextArea = new JScrollPane(frameTextArea);
//#7
//create an instance of a border layout
frameLayout = new BorderLayout();
frameContainer.add(scrollForTextArea, BorderLayout.CENTER);
//size the JFrame and set it to visible
setVisible(true);
setSize(height, width);
//#8 add a menu
makeMenu();
//#9
//this will provide both
//if the lineWrap() method is false
pack();
showElements();
}
//--setLookAndFeel()-
//#5.1
public void setLookAndFeel() {
try {
String lookAndFeel = UIManager.getSystemLookAndFeelClassName();
UIManager.setLookAndFeel(lookAndFeel);
}
catch(Exception 1FE) {
//process exception
}
}
//#8.1makeMenu()--
public void makeMenu() {
//create a menu bar
bar = new JMenuBar();
//create a file menu
fileMenu = new JMenu("File");
fileMenu.setMnemonic('S');
closeApp = new JMenuItem("Close");
closeApp.setMnemonic('C');
//add the File items to File menu
fileMenu.add(saveText);
fileMenu.add(closeApp);
//create Edit menu
editMenu = new JMenu("Edit");
editMenu.setMnemonic('E');
//with menu items
clearText = new JMenuItem("Clear Text");
clearText.setMnemonic('X');
//add the Edit items to the Edit menu
editMenu.add(clearText);
//create Help menu
helpMenu = new JMenu("Help");
helpMenu.setMnemonic('H');
//with menu items
aboutThisApp = new JMenuItem("About...");
aboutThisApp.setMnemonic('A');
//add the Help items to the Help menu
helpMenu.add(aboutThisApp);
//create Programs menu
programMenu = new JMenu("Programs");
programMenu.setMnemonic('P');
//with menu items
programA = new JMenuItem("Program A");
programB = new JMenuItem("Program B");
programC = new JMenuItem("Program C");
//add the Programs menu items to Programs menu
programMenu.add(programA);
programMenu.add(programB);
programMenu.add(programC);
//add File, Edit, Help, and Programs to bar
bar.add(fileMenu);
bar.add(editMenu);
bar.add(helpMenu);
bar.add(programMenu);
//add the menu bar to the content pane
setJMenuBar(bar);
}//end makeMenu
//#9.1--showElements-
public void showElements() {
//create a string
String elementsAtomicMass =
"Oxygen,15.9994,Fluorine,18.9984032,"+
"Neon,20.1797,Zinc,65.39,"+
"Magnesium,24.3050,Aluminum,26.981528,"+
"Silicon,28.0855,Phosphorus,30.973761,"+
"Sulfur,32.065,Chlorine,35.453,"+
"Potassium,39.0983,Calcium,40.078,"+
"Vanadium,50.9415,Manganese,54.938049,"+
"Yttrium,88.90585,Germanium,72.64,"+
"Barium,137.327,Bismuth,208.98038,"+
"Calcium,40.078,";
//split the string into array elements
String elementsandMass[] = elementsAtomicMass.split(",\\s");
//increment by 2s to see both columns
//subtract 1 to allow counting by 2s
for(int cntr = 0; cntr < elementsAndMass.lenth - 1; cntr += 2) {
frameTextArea.append("\n\t");
frameTextArea.append(elementsAndMass[cntr]
+ "\t"
+ elementsAndMass[cntr+1]
);
}
}
//#3.1-main()
public static void main(String args[]) {
new LabView("Lab View A");
}
}
