I have this code:
package web.test;
import java.awt.Dimension;
import java.io.IOException;
import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
public class WebTest {
/**
* #param args the command line arguments
*/
public static void main(String[] args) {
JEditorPane Window = new JEditorPane();
Window.setEditable(false);
try {
Window.setPage("http://www.sparky.org/safety_tips.html");
} catch (IOException e) {
Window.setContentType("text/html");
Window.setText("<html>Cannot Load Page/html>");
}
JScrollPane ScrollPane = new JScrollPane(Window);
JFrame Frame = new JFrame("Fire Safety Tips");
Frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
Frame.getContentPane().add(ScrollPane);
Frame.setPreferredSize(new Dimension());
Frame.setVisible(true);
Frame.setLocationRelativeTo(null);
}
}
Is there any way to make this window appear maximized?
I've tried to set the sizes of both the scroll and edit pane to setPreferredSize as .getMaximumSize but that won't work.
See Frame.setExtendedState(int).
Sets the state of this frame. The state is represented as a bitwise mask.
NORMAL Indicates that no state bits are set.
ICONIFIED
MAXIMIZED_HORIZ
MAXIMIZED_VERT
MAXIMIZED_BOTH
Concatenates MAXIMIZED_HORIZ and MAXIMIZED_VERT.
Related
no matter what i try my jframe window wont resize,its either really small or just goes full screen, i dont know what must resize either if possible could you help with that too
import java.awt.Dimension;
import java.awt.Frame;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
public class TheHundeler {
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.print("java poes");
JFrame Frame = new JFrame();
CalculaterContructer builder1 = new CalculaterContructer();
Frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel board = new JPanel();
board.setLayout(null);
builder1.buttonBuild(board);//this function has no effect on the end result of the size change
//not working
board.setSize(1000, 1000);
Frame.add(board);
Frame.setSize(new Dimension(1000, 1000));
Frame.pack();
Frame.setVisible(true);
}
}
I suggest you let the panel dictate the size. That way, the frame borders won't affect it and the actual space you see will reflect the dimensions.
For the panel, do a setPreferredSize() of your size. Then add it to the Frame and do a frame.pack().
And after pack if you do frame.setLocationRelativeTo(null) it will center it on the screen.
Can't figure out why this wont work, I get a blank panel added to my gridbag panel.
I added a JLabel("test") between the frames I'm trying to add just to see that something IS getting added, it just isn't visible?
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Graphics2D;
import java.awt.GridLayout;
import java.awt.Image;
import java.awt.Label;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
public class Workspace extends JTabbedPane {
static JFrame frame = new JFrame();
private JPanel grid;
private String text = new String("testing.");
Workspace() {
this.addTab("title", growPanel());
}
public static void main(String[] args) throws IOException {
createAndShowGUI();
}
private JPanel growPanel() {
JPanel gp = new JPanel(false);
gp.setPreferredSize(new Dimension(800,600));
//Add a button that adds my frame
JButton addComponentBtn = new JButton("Add Component");
addComponentBtn.addActionListener(e-> {
try {
addComponent();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
});
gp.add(addComponentBtn, BorderLayout.PAGE_START);
grid = new JPanel(new GridLayout(0, 2, 10, 10)); //any number of rows, 2 columns, H and V gap
JScrollPane sp = new JScrollPane(grid);
sp.setPreferredSize(new Dimension(800,600));
gp.add(sp, BorderLayout.CENTER);
this.setVisible(true);
return gp;
}
void addComponent() throws IOException {
System.out.println("adding");
grid.add(new JLabel("test"));
grid.add(new intf());
this.repaint();
frame.pack();
}
private static void createAndShowGUI() throws IOException {
//Create and set up the window.
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Add content to the window.
frame.add(new Workspace(), BorderLayout.CENTER);
//Display the window.
frame.pack();
frame.setVisible(true);
}
}
And the intf.java class for the JInternalFrame:
import javax.swing.JInternalFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class intf extends JInternalFrame {
public intf () {
super("Document",
true, //resizable
true, //closable
true, //maximizable
true);//iconifiable
JPanel jp = new JPanel();
JLabel jl = new JLabel("Hi I'm a label");
jp.add(jl);
this.add(jp);
this.pack();
this.repaint();
}
}
Edit:
The JPanel is used to hold the Layout, I don't think I can assign one to the TabbedPane?
Users will load in images which will appear on the left side of the GridLayout (I will upgrade this to a GridBag). After selecting regions on said images, graphs will appear on the right side. This is also why we use a scrollPane so that there is no limit to the number of images loaded. The TabbedPane will be used to split the load if a user loads in too many images (this is all not in the demo code shown here and not relevant to the problem).
The code I posted is for testing why the JInternalFrame doesn't show, so it only shows what is relevant to getting that to work.
Thank you all for your input.
It turned out to be a simple mistake of not having a necessary .setVisible(true)
Under the addComponent() method, the problem is solved when I replace
grid.add(new intf());
with
intf a = new intf();
a.setVisible(true);
grid.add(a);
I'm trying to make a full-screen GUI using Java which, on the JFrame, has 2 JPanel's, one of which only takes roughly 0.10 of the screen width. When I place these panels on the frame, using the same height, they appear to display with a different height on Linux & Mac OS but they appear okay on Windows. Does anybody have any idea on how to make both panels the same height for Linux & Mac OS? I re-made the problem quickly using WindowBuilder for posting here.
package View;
import java.awt.Color;
import java.awt.EventQueue;
import java.awt.GraphicsDevice;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import controller.ExitActionListener;
import java.awt.event.ActionListener;
public class TestFrame2 {
private JFrame frame;
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
TestFrame2 window = new TestFrame2();
window.frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
public TestFrame2() {
initialize();
}
private void initialize() {
frame = new JFrame();
GraphicsDevice device = frame.getGraphicsConfiguration().getDevice();
frame.setExtendedState(JFrame.MAXIMIZED_BOTH);
frame.setUndecorated(true);
frame.setVisible(true);
JPanel panel = new JPanel();
panel.setSize((int)(frame.getWidth()*0.1), frame.getHeight());
panel.setBackground(Color.BLACK);
frame.getContentPane().add(panel);
JPanel panel1 = new JPanel();
panel1.setBackground(Color.RED);
panel1.setSize(frame.getWidth(), frame.getHeight());
frame.getContentPane().add(panel1);
// temporary close button
ActionListener exitActionListener = new ExitActionListener();
JButton exit = new JButton("Exit System");
exit.setBounds(150 ,200, 150, 100);
exit.addActionListener(exitActionListener);
panel1.add(exit);
//Set program as full screen
device.setFullScreenWindow(frame);
}
}
I'm creating a login system and when I made my login button, it took up the entire frame. I tried the .setBounds(); but it did not work. Not sure what I did wrong, please help.
import java.awt.FlowLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JTextField;
public class Main extends JFrame{
public Main(){
JTextField name = new JTextField("Username");
JTextField pass = new JTextField("Password");
JButton login = new JButton("Login");
name.setBounds(230, 110, 100, 25);
pass.setBounds(230, 145, 100, 25);
login.setBounds(230, 165, 100, 25);
add(name);
add(pass);
add(login);
}
public static void main(String [] args) {
Main a = new Main();
a.setDefaultCloseOperation(EXIT_ON_CLOSE);
a.setSize(500, 300);
a.setLocationRelativeTo(null);
a.setVisible(true);
a.setTitle("Login System");
a.setResizable(false);
a.setLayout(new FlowLayout());
}
}
in your constructor, try setLayout(new FlowLayout());.
This will likely not lead to what you want, but from there on you can investigate further. i recommend you read about layouts here:
https://docs.oracle.com/javase/tutorial/uiswing/layout/visual.html
By default, Frame has a BorderLayout installed. When the items are added they are all added to "centre" because constraints are not passed. And the centre component occupies all free space in the BorderLayout. You can either change the layout manager or provide constraints while adding components.
FlowLayout or BoxLayout are good candidates for this.
Problem is by default the layout manager for JFrame is BorderLayout. Once you add components with method add() it gets added to the center region. So the last component added is shown. In your case its the login button. Also setBounds() don't work with the said layout manager.
You have to work a lot on your coding style. What you did is first created the frame and added components to it and later in the main() you have set the size, made it visible and then you set the layout manager to FlowLayout.
Ideally, you must construct the frame, set layout, add components to frame, use pack() to set frame size, set frame's location and finally make frame visible.
Using BorderLayout:
import java.awt.BorderLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
public class Main implements Runnable {
public static void main(String[] args) {
SwingUtilities.invokeLater(new Main());
}
#Override
public void run() {
JFrame frame = new JFrame("BorderLayout");
frame.getContentPane().add(new JTextField(15), BorderLayout.WEST);
frame.getContentPane().add(new JPasswordField(15), BorderLayout.CENTER);
frame.getContentPane().add(new JButton("Login"), BorderLayout.EAST);
frame.pack();
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.setVisible(true);
}
}
Using FlowLayout:
import java.awt.FlowLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
public class Main implements Runnable {
public static void main(String[] args) {
SwingUtilities.invokeLater(new Main());
}
#Override
public void run() {
JFrame frame = new JFrame("FlowLayout");
frame.getContentPane().setLayout(new FlowLayout());
frame.getContentPane().add(new JTextField(15));
frame.getContentPane().add(new JPasswordField(15));
frame.getContentPane().add(new JButton("Login"));
frame.pack();
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.setVisible(true);
}
}
P.S. If you still want to use absolute positions, I would recommend you using SpringLayout or GroupLayout.
I've looked at a ton of other questions where people have similar issues to what I'm having here (most solutions found by simple mistakes) but I can't for the life of me figure out why my graphics won't display in my jframe. I'm pretty new to Java Graphics so I'd appreciate all the help that I can get. (If someone thinks this is a repeat question, all I ask is that you wait until I get an answer before you close it)
Oh, also, when I run the program, it tells me that the repaint method is called, if that helps in some way
package game.try5;
import java.awt.Dimension;
import java.net.URL;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class Window {
public Window() {
JFrame frame = new JFrame("Epic Game");
frame.setSize(800,600);
frame.setLocationRelativeTo(null);
frame.setLayout(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
GamePanel panel = new GamePanel();
frame.add(panel);
frame.setVisible(true);
}
public static void main(String[] args){
Window window = new Window();
}
}
.
package game.try5;
import java.awt.Graphics;
import javax.swing.JPanel;
public class GamePanel extends JPanel{
GameObject go = new GameObject(0,0,false,"Dog.jpg");
public GamePanel(){
repaint();
System.out.println("Repaint method called");
}
public void paintComponent(Graphics g){
super.paintComponent(g);
g.drawImage(go.getImg().getImage(), go.getxLoc(), go.getyLoc(), 50, 50, null);
System.out.println("Graphics method called");
}
}
.
package game.try5;
import java.awt.Dimension;
import java.net.URL;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class Window {
public Window() {
JFrame frame = new JFrame("Epic Game");
frame.setSize(800,600);
frame.setLocationRelativeTo(null);
frame.setLayout(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
GamePanel panel = new GamePanel();
frame.add(panel);
frame.setVisible(true);
}
public static void main(String[] args){
Window window = new Window();
}
}
Comment out frame.setLayout(null); and you'll most likely see the game.
The default layout of a JFrame is currently a BorderLayout
An object added to a BorderLayout without a constraint defaults to the CENTER.
An object in the CENTER of a BorderLayout is stretched to the available with and height.
Since the code calls frame.setSize(800,600); that available width and height is 800x600 pixels less the frame decorations.
A better all round approach is to:
Have the custom painted component override getPreferredSize() to return a sensible value.
Add the component to a container.
Lastly, pack the top level window. This will make the frame the smallest size it needs to be in order to display the content.