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Thread: JLabel and set Location doesn't work correctly

  1. #1
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    Default JLabel and set Location doesn't work correctly

    Hello everyone
    i'm making a programe that has buttons, labels, and text fields and i'm having a problem with JLabel where when i try to use SetLocation it works on the first three Label but its doesn't work on the fourth one !!
    so for example i have 3 labels and when i set their location it works correctly but when i set the location for the fourth one it doesn't work.
    the one that doesn't work is named AgeLabel in my code.

    also sometimes when i run the program one of the buttons get resize by it self and full the whole screen. so for example if i have the button size set to (50,50) sometimes when i run the program it full the whole window and the seize change to for example (800,600). Why ?!!

    here is the full class code.

    package finalproject;
     
    import java.awt.*;
    import java.awt.event.*;
    import javax.swing.*;
     
    public class Interface extends JFrame implements ActionListener{
     
        private final int FRAME_WIDTH = 1024;
        private final int FRAME_HIGHT = 768;
        private final int FRAME_X_ORIGIN = 150;
        private final int FRAME_Y_ORIGIN = 200;
        private String numberStr;
     
        private JTextField FirstNameFiled   = new JTextField();
        private JTextField LastNameFiled    = new JTextField();
        private JTextField AddressFiled     = new JTextField();
        private JTextField AgeFiled         = new JTextField();
     
        private Container ContentPane = getContentPane();
     
        public Interface() {
     
            SetWindow();
            Buttons();
            TextField();
            Lable();
        }
     
        private void SetWindow() {
     
            this.setTitle("Final Project");
            this.setSize(FRAME_WIDTH, FRAME_HIGHT);
            this.setLocation(FRAME_X_ORIGIN, FRAME_Y_ORIGIN);
            this.setDefaultCloseOperation(EXIT_ON_CLOSE);
            this.setVisible(true);
            this.setResizable(false);
        }
     
        private void Buttons() {
            JButton ExitButton, SaveButton, LoadButton;
     
            ExitButton = new JButton("Exit");
            ExitButton.setActionCommand("Exit");
            ExitButton.setLocation(10, 140);
            ExitButton.setSize(95, 25);
            ExitButton.addActionListener(this);
            ContentPane.add(ExitButton);
     
            SaveButton = new JButton("Save File");
            SaveButton.setActionCommand("Save_File");
            SaveButton.setLocation(110, 140);
            SaveButton.setSize(95, 25);
            SaveButton.addActionListener(this);
            ContentPane.add(SaveButton);
     
            LoadButton = new JButton("Load File");
            LoadButton.setActionCommand("Load_File");
            LoadButton.setLocation(210, 140);
            LoadButton.setSize(95, 25);
            LoadButton.addActionListener(this);
            ContentPane.add(LoadButton);  
        }
     
        private void Lable() {
     
            JLabel FirstNameLabel = new JLabel(); 
            FirstNameLabel.setText("First Name: ");
            FirstNameLabel.setSize(100,20);
            FirstNameLabel.setLocation(10, 10);
            ContentPane.add(FirstNameLabel); 
     
            JLabel LastNameLabel = new JLabel(); 
            LastNameLabel.setText("Last Name: ");
            LastNameLabel.setSize(100,20);
            LastNameLabel.setLocation(240, 10);
            ContentPane.add(LastNameLabel); 
     
            JLabel AddressLabel = new JLabel(); 
            AddressLabel.setText("Address: ");
            AddressLabel.setSize(100,20);
            AddressLabel.setLocation(10, 50);
            ContentPane.add(AddressLabel); 
     
            JLabel AgeLabel = new JLabel(); 
            AgeLabel.setText("Age: ");
            AgeLabel.setSize(100, 20);
            AgeLabel.setLocation(240, 50);
            ContentPane.add(AgeLabel);
        }
     
        private void TextField() {
     
            FirstNameFiled.setActionCommand("FirstNameFiled");
            FirstNameFiled.setText("First Name");
            FirstNameFiled.setSize(100, 25);
            FirstNameFiled.setLocation(85, 9);
            FirstNameFiled.addActionListener(this);
            ContentPane.add(FirstNameFiled);  
     
            LastNameFiled.setActionCommand("LastNameFiled");
            LastNameFiled.setText("Last Name");
            LastNameFiled.setSize(100, 25);
            LastNameFiled.setLocation(315, 9);
            LastNameFiled.addActionListener(this);
            ContentPane.add(LastNameFiled); 
     
            AddressFiled.setActionCommand("AddressFiled");
            AddressFiled.setText("Address");
            AddressFiled.setSize(100, 25);
            AddressFiled.setLocation(85, 48);
            AddressFiled.addActionListener(this);
            ContentPane.add(AddressFiled); 
     
            AgeFiled.setActionCommand("AgeFiled");
            AgeFiled.setText("Age");
            AgeFiled.setSize(100, 25);
            AgeFiled.setLocation(315, 48);
            AgeFiled.addActionListener(this);
            ContentPane.add(AgeFiled); 
        }
     
        public void actionPerformed(ActionEvent Action) {
            if(Action.getActionCommand().contains("Exit"))
                System.exit(0);
     
            if(Action.getActionCommand().equals("Save_File")) {
                System.out.print("Saving File");
            }
     
            if(Action.getActionCommand().equals("Load_File")) {
                System.out.print("Loading File");
            }
     
            if (Action.getActionCommand().contains("FirstNameFiled")) {
                numberStr = FirstNameFiled.getText();
            }
     
            if (Action.getActionCommand().contains("LastNameFiled")) {
                numberStr = LastNameFiled.getText();
            }
     
            if (Action.getActionCommand().contains("AddressFiled")) {
                numberStr = AddressFiled.getText();
            }
     
            if (Action.getActionCommand().contains("AgeFiled")) {
                numberStr = AgeFiled.getText();
            }
        }
    }


  2. #2
    Crazy Cat Lady KevinWorkman's Avatar
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    Default Re: JLabel and set Location doesn't work correctly

    Useful links: How to Ask Questions the Smart Way | Use Code Tags | Java Tutorials
    Static Void Games - Play indie games, learn from game tutorials and source code, upload your own games!

  3. The Following User Says Thank You to KevinWorkman For This Useful Post:

    Fantasy (November 15th, 2011)

  4. #3
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    Default Re: JLabel and set Location doesn't work correctly

    LOL sorry and thank you
    i'm a newbie

  5. #4
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    Default Re: JLabel and set Location doesn't work correctly

    ok i just added this line of code and everything is now working correctly
    ContentPane.setLayout(null);
    if you guys don't mind can you just take a quick look at my code and tell me if i'm doing some bad programing practice and can anyone give me some tips on my code.

    thanks alot.

  6. #5
    Crazy Cat Lady KevinWorkman's Avatar
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    Default Re: JLabel and set Location doesn't work correctly

    Using a null layout is a bad programming practice.
    Useful links: How to Ask Questions the Smart Way | Use Code Tags | Java Tutorials
    Static Void Games - Play indie games, learn from game tutorials and source code, upload your own games!

  7. The Following User Says Thank You to KevinWorkman For This Useful Post:

    Fantasy (November 15th, 2011)

  8. #6
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    Default Re: JLabel and set Location doesn't work correctly

    may i ask why ?

  9. #7
    Crazy Cat Lady KevinWorkman's Avatar
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    Default Re: JLabel and set Location doesn't work correctly

    What happens when you resize your container? What happens if you want to add or remove a component? What happens if you want to switch the orientation of your container? The layout managers are there for a reason. Use 'em.
    Useful links: How to Ask Questions the Smart Way | Use Code Tags | Java Tutorials
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