CODEWITHSUNDEEP
javaswinglayoutawt
user2839482
user2839482

Reputation: 21

Items won't move around JPanel

This is the code.

public class Main {
    public static int Health = 100;
    public static int ArmourPt = 0;
    public static int Gold = 250;
    public static JLabel Goldlbl = new JLabel("Gold:");
    public static JLabel Healthlbl = new JLabel("Health:");
    public static JLabel ArmourPtLbl = new JLabel("Armour Points");
    public static String GoldString = (Integer.toString(Gold));
    public static JLabel GoldDis = new JLabel(GoldString);
    public static String HealthString = (Integer.toString(Health));
    public static JLabel HealthDis = new JLabel(HealthString);
    public static JFrame MainWindow = new JFrame();

    public static int CalcDamage(int Damage, int Armour) {
        int ReturnDamage = Damage - Armour + Damage / Damage + Armour / Damage * Damage -         Armour + Damage + 25 ;
        if(ReturnDamage < 0){
            ReturnDamage = 0;
        }
        return ReturnDamage;     
    }

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        MainWindow.setSize(1500, 700);
        MainWindow.setTitle("Ampventure");;

        JPanel MPanel = (JPanel)MainWindow.getContentPane();
        MPanel.setLayout(null);

        JPanel StatsPanel = new JPanel();
        StatsPanel.setBorder(BorderFactory.createLineBorder(Color.BLACK, 4));
        StatsPanel.setSize(350, 450);
        StatsPanel.setLocation(0, 0);
        StatsPanel.setMaximumSize(new Dimension (350, 450));
        StatsPanel.add(Goldlbl);
        Goldlbl.setLocation(30, 14);
        StatsPanel.add(GoldDis);
        GoldDis.setLocation(35, 14);
        StatsPanel.add(Healthlbl);
        Healthlbl.setLocation(0, 0);
        MPanel.add(StatsPanel);

        JPanel InvPanel = new JPanel();
        InvPanel.setBorder(BorderFactory.createLineBorder(Color.BLACK, 4));
        InvPanel.setSize(350, 212);
        InvPanel.setLocation(0, 450);
        StatsPanel.setMaximumSize(new Dimension (350, 250));
        MPanel.add(InvPanel);

        JPanel DisplayPanel = new JPanel();
        DisplayPanel.setBorder(BorderFactory.createLineBorder(Color.BLACK, 4));
        DisplayPanel.setSize(1135, 450);
        DisplayPanel.setLocation(350, 0);
        MPanel.add(DisplayPanel);

        JPanel ControlPanel = new JPanel();
        ControlPanel.setBorder(BorderFactory.createLineBorder(Color.BLACK, 4));
        ControlPanel.setSize(1135, 212);
        ControlPanel.setLocation(350, 450);
        MPanel.add(ControlPanel);

        MainWindow.setVisible(true);
    }
}

What is supposed to happen: A window divided into four sections and on the upper right section two labels named Gold: and Health: displayed with the first spaced above the second one.

What happens at execution: The label Health: is horizontally next to the label Gold:

I have tried changing everything, but nothing works.

Also I realize my program uses a null layout manager, but that is my intention. Not a mistake.

Upvotes: 2

Views: 136

Answers (1)

tenorsax
tenorsax

Reputation: 21233

You set the null layout only for MPanel. Nested panels do not inherit parent's layout. StatsPanel has FlowLayout as this is a default layout of JPanel. Goldlbl and Healthlbl are positioned according to the rules of FlowLayout. See How to Use FlowLayout for more examples.

If the intention is to use absolute positioning then execute StatsPanel.setLayout(null);. In case of absolute layout you have to call setbounds method for each of the container's children. See Doing Without a Layout Manager for details.

As a side note, the naming convention of the posted snippet is a bit confusing. See Java Naming Conventions.

Upvotes: 2

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