Ad:

Java Discussion Thread
Unsolved
Views: 1628

Feb 18th, 2008

Regular GUI design help

Expand Post »

hey all, the noob is back. and with more questions that you guys will probably make fun of me for but...whatever.

I am creating a GUI design where there are four labels (it doesn't need functionality) with an OK, HELP and CANCEL button on the right side. i haven't started on the buttons yet because I've got a error already.

the error is "invalid method declaration" on the line 18 LabelFrame() part. but it's weird because this is a part where i'm still copying everything from the book (because the buttons are the real exercise). any suggestions. or do i need to finish the test program to get it to work?

Okay...Go ahead

Java Syntax (Toggle Plain Text)
import java.awt.FlowLayout; // specifies how components will be arranged
import javax.swing.JFrame; // provides basic window features
import javax.swing.JLabel; // displays text, images
import javax.swing.SwingConstants;
 
 
public class GUIEx extends JFrame
{
  private JLabel label1; // just text (snap to grid)
  private JLabel label2; // just text (show grid)
  private JLabel label3; // just text (X:)
  private JLabel label4; // just text (Y:)
 
  //Label  frames
  public LabelFrame()
  {
    super( "Align" );
    setLayout( new FlowLayout() ); // set frame layout
 
    // label1
    label1 = new JLabel( "Snap to Grid");
    label1.setToolTipText( "Snaps onto Grid Lines");
    add(label1); // adds the label to the JFrame
    label1.setVerticalTextPosition(SwingConstants.LEFT);
    label1.setHorizontalTextPosition(SwingConstants.TOP);
 
    // label2
    label1 = new JLabel( "Show Grid");
    label1.setToolTipText( "Shows the gridlines in your workspace");
    add(label2); // adds the label to the JFrame
    label1.setVerticalTextPosition(SwingConstants.LEFT);
    label1.setHorizontalTextPosition(SwingConstants.BOTTOM);
 
    // label3
    label1 = new JLabel( "X: ");
    label1.setToolTipText( "The X axis");
    add(label3); // adds the label to the JFrame
    label1.setVerticalTextPosition(SwingConstants.CENTER);
    label1.setHorizontalTextPosition(SwingConstants.TOP);
 
    // label4
    label1 = new JLabel( "Y: ");
    label1.setToolTipText( "The Y axis");
    add(label4); // adds the label to the JFrame
    label1.setVerticalTextPosition(SwingConstants.CENTER);
    label1.setHorizontalTextPosition(SwingConstants.BOTTOM);
  } // ends JLabel constructors
} // ends class
import java.awt.FlowLayout; // specifies how components will be arranged
import javax.swing.JFrame; // provides basic window features
import javax.swing.JLabel; // displays text, images
import javax.swing.SwingConstants;


public class GUIEx extends JFrame
{
  private JLabel label1; // just text (snap to grid)
  private JLabel label2; // just text (show grid)
  private JLabel label3; // just text (X:)
  private JLabel label4; // just text (Y:)

  //Label  frames
  public LabelFrame()
  {
    super( "Align" );
    setLayout( new FlowLayout() ); // set frame layout

    // label1
    label1 = new JLabel( "Snap to Grid");
    label1.setToolTipText( "Snaps onto Grid Lines");
    add(label1); // adds the label to the JFrame
    label1.setVerticalTextPosition(SwingConstants.LEFT);
    label1.setHorizontalTextPosition(SwingConstants.TOP);

    // label2
    label1 = new JLabel( "Show Grid");
    label1.setToolTipText( "Shows the gridlines in your workspace");
    add(label2); // adds the label to the JFrame
    label1.setVerticalTextPosition(SwingConstants.LEFT);
    label1.setHorizontalTextPosition(SwingConstants.BOTTOM);

    // label3
    label1 = new JLabel( "X: ");
    label1.setToolTipText( "The X axis");
    add(label3); // adds the label to the JFrame
    label1.setVerticalTextPosition(SwingConstants.CENTER);
    label1.setHorizontalTextPosition(SwingConstants.TOP);

    // label4
    label1 = new JLabel( "Y: ");
    label1.setToolTipText( "The Y axis");
    add(label4); // adds the label to the JFrame
    label1.setVerticalTextPosition(SwingConstants.CENTER);
    label1.setHorizontalTextPosition(SwingConstants.BOTTOM);
  } // ends JLabel constructors
} // ends class

Similar Threads

Help required for Sun Certified Java Developer Exam(SCJD) in Java
Web programmers making more then software programmers? in IT Professionals' Lounge
CTFMON32 Hijackthis in Viruses, Spyware and other Nasties

leroi green

Reputation Points: 10

Solved Threads: 0

Junior Poster in Training

Offline

93 posts
since Oct 2007

Permalink

Feb 18th, 2008

Re: Regular GUI design help

The class is called GUIEx and you have a method called LabelFrame() in which you call super().
Meaning that super(), should called only inside the constructor and LabelFrame is not a constructor since the class's name is GUIEx

javaAddict

Sponsor

Featured Poster

Reputation Points: 1014

Solved Threads: 446

Nearly a Senior Poster

Offline

3,259 posts
since Dec 2007

Permalink

Feb 21st, 2008

Re: Regular GUI design help

okay, i've been following along a little on the chap 11 pages and it leads you to write a testing program. both will compile for me but then not run...not sure exactly where to go & i've gone thru the index a couple times (2 double check myself).

where am i screwing up?

Java Syntax (Toggle Plain Text)
 import java.awt.FlowLayout; // specifies how components will be arranged
import javax.swing.JFrame; // provides basic window features
import javax.swing.JLabel; // displays text, images
import javax.swing.SwingConstants;
 
 
public class LabelFrame extends JFrame
{
  private JLabel label1; // just text (snap to grid)
  private JLabel label2; // just text (show grid)
  private JLabel label3; // just text (X:)
  private JLabel label4; // just text (Y:)
 
 
  //Label  frames
  public LabelFrame()
  {
    super( "Align" );
    setLayout( new FlowLayout() ); // set frame layout
 
    // label1
    label1 = new JLabel( "Snap to Grid");
    label1.setToolTipText( "Snaps onto Grid Lines");
    add(label1); // adds the label to the JFrame
    label1.setVerticalTextPosition(SwingConstants.LEFT);
    label1.setHorizontalTextPosition(SwingConstants.TOP);
 
    // label2
    label1 = new JLabel( "Show Grid");
    label1.setToolTipText( "Shows the gridlines in your workspace");
    add(label2); // adds the label to the JFrame
    label1.setVerticalTextPosition(SwingConstants.LEFT);
    label1.setHorizontalTextPosition(SwingConstants.BOTTOM);
 
    // label3
    label1 = new JLabel( "X: ");
    label1.setToolTipText( "The X axis");
    add(label3); // adds the label to the JFrame
    label1.setVerticalTextPosition(SwingConstants.CENTER);
    label1.setHorizontalTextPosition(SwingConstants.TOP);
 
    // label4
    label1 = new JLabel( "Y: ");
    label1.setToolTipText( "The Y axis");
    add(label4); // adds the label to the JFrame
    label1.setVerticalTextPosition(SwingConstants.CENTER);
    label1.setHorizontalTextPosition(SwingConstants.BOTTOM);
  } // ends JLabel constructors
} // ends class
 import java.awt.FlowLayout; // specifies how components will be arranged
import javax.swing.JFrame; // provides basic window features
import javax.swing.JLabel; // displays text, images
import javax.swing.SwingConstants;


public class LabelFrame extends JFrame
{
  private JLabel label1; // just text (snap to grid)
  private JLabel label2; // just text (show grid)
  private JLabel label3; // just text (X:)
  private JLabel label4; // just text (Y:)


  //Label  frames
  public LabelFrame()
  {
    super( "Align" );
    setLayout( new FlowLayout() ); // set frame layout

    // label1
    label1 = new JLabel( "Snap to Grid");
    label1.setToolTipText( "Snaps onto Grid Lines");
    add(label1); // adds the label to the JFrame
    label1.setVerticalTextPosition(SwingConstants.LEFT);
    label1.setHorizontalTextPosition(SwingConstants.TOP);

    // label2
    label1 = new JLabel( "Show Grid");
    label1.setToolTipText( "Shows the gridlines in your workspace");
    add(label2); // adds the label to the JFrame
    label1.setVerticalTextPosition(SwingConstants.LEFT);
    label1.setHorizontalTextPosition(SwingConstants.BOTTOM);

    // label3
    label1 = new JLabel( "X: ");
    label1.setToolTipText( "The X axis");
    add(label3); // adds the label to the JFrame
    label1.setVerticalTextPosition(SwingConstants.CENTER);
    label1.setHorizontalTextPosition(SwingConstants.TOP);

    // label4
    label1 = new JLabel( "Y: ");
    label1.setToolTipText( "The Y axis");
    add(label4); // adds the label to the JFrame
    label1.setVerticalTextPosition(SwingConstants.CENTER);
    label1.setHorizontalTextPosition(SwingConstants.BOTTOM);
  } // ends JLabel constructors
} // ends class

Java Syntax (Toggle Plain Text)
 import javax.swing.JOptionPane;
 
public class LTester
{
  public static void main( String args[])
  {
    LabelFrame labelFrame = new LabelFrame(); // create a frame for you
    labelFrame.setSize( 375, 180); // make the box the size you want
    labelFrame.setVisible(true); //display frame
   } // end main
} // end class LTester
 import javax.swing.JOptionPane;

public class LTester
{
  public static void main( String args[])
  {
    LabelFrame labelFrame = new LabelFrame(); // create a frame for you
    labelFrame.setSize( 375, 180); // make the box the size you want
    labelFrame.setVisible(true); //display frame
   } // end main
} // end class LTester

leroi green

Reputation Points: 10

Solved Threads: 0

Junior Poster in Training

Offline

93 posts
since Oct 2007

Permalink

Feb 21st, 2008

Re: Regular GUI design help

I believe you have these SwingConstants backwards in the two lines below. I ran your code through NetBeans and it gave me exceptions on these lines:

Java Syntax (Toggle Plain Text)
    label1.setVerticalTextPosition(SwingConstants.LEFT);
    label1.setHorizontalTextPosition(SwingConstants.TOP);
    label1.setVerticalTextPosition(SwingConstants.LEFT);
    label1.setHorizontalTextPosition(SwingConstants.TOP);

Swapping the positions of LEFT and TOP in the above lines got me farther in the code. TOP goes with Vertical and LEFT with HORIZONTAL, not the way you have it. Try swapping them for label1 and the other labels.

VernonDozier

Featured Poster

Reputation Points: 2614

Solved Threads: 687

Posting Expert

Offline

5,375 posts
since Jan 2008

Permalink

Feb 21st, 2008

Re: Regular GUI design help

thanx. will do now

Click to Expand / Collapse Quote originally posted by VernonDozier ...

I believe you have these SwingConstants backwards in the two lines below. I ran your code through NetBeans and it gave me exceptions on these lines:
Java Syntax (Toggle Plain Text)
    label1.setVerticalTextPosition(SwingConstants.LEFT);
    label1.setHorizontalTextPosition(SwingConstants.TOP);
label1.setVerticalTextPosition(SwingConstants.LEFT); label1.setHorizontalTextPosition(SwingConstants.TOP);
Swapping the positions of LEFT and TOP in the above lines got me farther in the code. TOP goes with Vertical and LEFT with HORIZONTAL, not the way you have it. Try swapping them for label1 and the other labels.

leroi green

Reputation Points: 10

Solved Threads: 0

Junior Poster in Training

Offline

93 posts
since Oct 2007

This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.

Previous Thread in Java Forum Timeline: Array of Strings???

Next Thread in Java Forum Timeline: java.io.FileNotFoundException

DaniWeb Message

Cancel Changes

User Name
Password