Re: file reader returning null when file is not null content

On May 2, 10:06 pm, markspace <nos...@nowhere.com> wrote:


o,


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]