Re: file reader returning null when file is not null content
On May 2, 10:06 pm, markspace <nos...@nowhere.com> wrote:
jason wrote:
if i attempt to migrate the method of FileReader to my basic desktop
application it no longer works.
Well, I can't tell you what the problem is with the program, if you
don't show it to me. All I can say is I agree the program you posted
works. The program you didn't post ... shrug, I don't know.
this desktop application
Ugh, you meant the NetBeans project type "Java Desktop Application?"
Don't use that, I don't think that JSR ever really went anywhere. It's
being maintained by one guy at Kenai now who seems to have no resources
or customers. Notice that their front page basically refers you to the
NetBeans Platform (different than the IDE) for an application framework.
https://appframework.dev.java.net/
Use the regular old "Java Application" instead, and just make regular
old Swing objects. It works fine, everybody does it. JSR 296 is, im=
o,
dead.
markspace,
thank you very much for taking the time to respond and decipher my
errors.
i was using the "Java Desktop App" for ease of introducing myself to
Java GUI's. it helped and now i am taking your recommended path.
i am having one minor issue. i cannot seem to locate components where
i would like. i have made the components yet cannot place them where i
would like. if you could assist me with this one last issue i will be
on my way to completing my goal.
my current code is below.
a snippet that more aptly explains my issue is the following:
[code] JLabel JLabel1 = new JLabel("Search: ");
//JLabel1.setHorizontalAlignment(SwingConstants.LEFT);
//JLabel1.setVerticalAlignment(SwingConstants.TOP);
JLabel1.setLocation(100, 100);
[/code]
as you can notice, i am trying to use JLabel1.setLocation to denote
the desired location of my label. this does not seem to be working.
thank you in advance for any help!
[code]
//file: PopUpColorMenu.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class PopUpColorMenu extends JFrame
implements ActionListener {
JPopupMenu colorMenu;
Component selectedComponent;
public PopUpColorMenu( ) {
super("v1.0");
setSize(500, 200);
setLocation(200, 200);
addWindowListener(new WindowAdapter( ) {
public void windowClosing(WindowEvent e) { System.exit(0); }
});
MouseListener mouseListener = new MouseAdapter( ) {
public void mousePressed(MouseEvent e) { checkPopup(e); }
public void mouseClicked(MouseEvent e) { checkPopup(e); }
public void mouseReleased(MouseEvent e) { checkPopup(e); }
private void checkPopup(MouseEvent e) {
if (e.isPopupTrigger( )) {
selectedComponent = e.getComponent( );
colorMenu.show(e.getComponent(), e.getX(), e.getY( ));
}
}
};
final Container content = getContentPane( );
JMenuBar menuBar = new JMenuBar( ); //create menu bar
JMenu File_Menu = new JMenu("File"); //create main menu item
File_Menu .setMnemonic(KeyEvent.VK_F);
JMenuItem Def_Save=new JMenuItem("Save As Default");
Def_Save.setMnemonic(KeyEvent.VK_S);
Def_Save.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent arg0){
System.out.println("SAVED");
}
});
JMenuItem Def_Restore=new JMenuItem("Restore Default");
Def_Restore.setMnemonic(KeyEvent.VK_R);
Def_Restore.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent arg0){
System.out.println("RESTORE");
}
});
JMenuItem File_Exit=new JMenuItem("Exit");
File_Exit.setMnemonic(KeyEvent.VK_X);
File_Exit.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent arg0){
//System.out.println("EXITED");
System.exit(0);
}
});
File_Menu.add(Def_Save); //add as submenu
File_Menu.add(Def_Restore);
File_Menu.add(File_Exit);
content.setLayout(new FlowLayout( ));
//menuBar.add(File_Menu);
//setJMenuBar(menuBar);
JLabel JLabel1 = new JLabel("Search: ");
//JLabel1.setHorizontalAlignment(SwingConstants.LEFT);
//JLabel1.setVerticalAlignment(SwingConstants.TOP);
JLabel1.setLocation(100, 100);
content.add(JLabel1);
JButton button1 = new JButton("Go");
button1.addMouseListener(mouseListener);
button1.setHorizontalAlignment(SwingConstants.RIGHT);
button1.setVerticalAlignment(SwingConstants.BOTTOM);
content.add(button1);
colorMenu = new JPopupMenu("Color");
colorMenu.add(("Red"));
colorMenu.add(("Green"));
colorMenu.add(("Blue"));
button1.addActionListener(new ActionListener( ) {
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
System.out.println("Maybe");
}
});
getContentPane( ).addMouseListener(mouseListener);
setVisible(true);
}
public void actionPerformed(ActionEvent e) {
String color = e.getActionCommand( );
if (color.equals("Red"))
selectedComponent.setBackground(Color.red);
else if (color.equals("Green"))
selectedComponent.setBackground(Color.green);
else if (color.equals("Blue"))
selectedComponent.setBackground(Color.blue);
}
private JMenuItem makeMenuItem(String label) {
JMenuItem item = new JMenuItem(label);
item.addActionListener( this );
return item;
}
public static void main(String[] args) {
new PopUpColorMenu( );
}
}
[/code]