Does anyone know why my image is not loading? I tried many things and so far nothing, first of all the folder "IMGFiles" is already like Source Folder.
package Main;
import javax.swing.*;
public class Menu extends JFrame {
public Menu()
{
ImageIcon imagem = new ImageIcon(Menu.class.getResource("/LiturgisGame/IMGFiles/LiturrgisLogoLoad.png"));
JLabel logo = new JLabel();
logo.setIcon(imagem);
}
public static void main(String[] args) {
//new Menu();
JFrame janela = new JFrame();
janela.setSize(816, 419);
janela.setUndecorated(true);
janela.setVisible(true);
janela.setLocationRelativeTo(null);
}
}
I'm assuming you are using UNIX (for the shape of the path you are using).
Here is an approach for you:
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import com.apple.eawt.Application;
public class Menu extends JFrame {
public Menu(){ }
public static void main(String[] args) {
Application.getApplication().setDockIconImage(new ImageIcon("/LiturgisGame/IMGFiles/LiturrgisLogoLoad.png").getImage());
//new Menu();
JFrame janela = new JFrame();
janela.setSize(816, 419);
janela.setUndecorated(true);
janela.setVisible(true);
janela.setLocationRelativeTo(null);
}
}
Output:
This happens because you prepare the JLabel inside Menu constructor and you do not initiate any instance of Menu class. Also, you do not add the JLabel into the frame (content pane).
Check this sample:
public class Menu extends JFrame {
public Menu()
{
ImageIcon imagem = new ImageIcon(Menu.class.getResource("/LiturgisGame/IMGFiles/LiturrgisLogoLoad.png"));
JLabel logo = new JLabel();
logo.setIcon(imagem);
setSize(816, 419);
setUndecorated(true);
setLocationRelativeTo(null);
getContentPane().add(logo); //Add the label to the content pane
}
public static void main(String[] args) {
SwingUtilities.invokeLater(()->{
new Menu().setVisible(true);
});
}
}
Related
I bought a Mac, I I download netbeans for my java.
package gui;
import javax.swing.*;
import java.awt.*;
public class Gui extends JFrame {
public void Gui(){
setTitle("Gui");
setSize(640,320);
setVisible(true);
}
public static void main(String[] args) {
new Gui();
}
}
It is very easy code and I didn't find any problem with it, but somehow the GUI is not showing up.
is GUI no suppose to show up on a Mac?
Somehow, the program didn't go through the Gui method, I tried
System.out.println("Hello");
didn't show up.
You think you're using a constructor but you are not! The constructor is what makes the app become a JFrame. This line:
public void Gui() {
should be:
public Gui() {
Also, nice to add a setMinimumSize(new Dimension(640,320));
I think the problem is you have a empty container, but I make an example for you:
import javax.swing.*;
public class Main {
private static JPanel panel1;
private static JButton button;
public static void main(String[] args) {
JFrame frame = new JFrame( "Main");
panel1 = new JPanel();
button = new JButton("Button");
panel1.add(button);
frame.setContentPane(panel1);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setTitle("Gui");
frame.setSize(640,320);
frame.setVisible(true);
}
}
test.java
import javax.swing.JFrame;
public class test {
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.setVisible(true);
frame.setSize(600, 600);
}
}
My Other java File test2.java
import javax.swing.JButton;
public class test2 {
public static void main(String[] args) {
JButton Button = new JButton();
frame.add(Button);
}
}
am trying to call frame to test2.java
The reason you are getting this problem:
When you run a java application, the application's main function will be called. Therefore you should really only have one main function per application.
In your scenario you had 2 main functions. Think of this as 2 different applications. The following scenarios were happening:
When you run the Test class, your application was creating a new JFrame object. That's pretty much it, it ended there. It had no idea that the Test2 class existed.
When you run the Test2 class, your application was creating a new JButton object. Although, your Test2 class had no reference to the frame variable (that is why you were getting an error). It didn't even know there was a Test class.
In order to fix this in your situation, try this:
Test.java
public class Test
{
public static void main(String[] args)
{
JFrame frame = new JFrame();
frame.setVisible(true);
frame.setSize(600, 600);
// By passing the frame as a reference, the function
// will be able to add the button to this frame.
Test2.addButton(frame);
}
}
Test2.java
public class Test2
{
public static void addButton(JFrame frame)
{
JButton button = new JButton();
frame.add(button);
}
}
A more OOP approach:
Here, I made a Driver class that would connect the Test2 and MyFrame classes together.
Driver.java
public class Driver
{
public static void main(String[] args)
{
MyFrame frame = new MyFrame();
Test2.addButton(frame);
}
}
MyFrame.java
public class MyFrame extends JFrame
{
public MyFrame()
{
this.setSize(600, 600);
this.setVisible(true);
}
}
Test2.java
public class Test2
{
public static void addButton(JFrame frame)
{
JButton button = new JButton();
frame.add(button);
}
}
I assume you're trying to add Button to the JFrame frame you created in test To do this, you'll need to make frame visible to what is essentially the global scope, as such:
import javax.swing.JFrame;
public class test {
public static JFrame frame;
public static void main(String[] args) {
frame = new JFrame();
frame.setVisible(true);
frame.setSize(600, 600);
test2.main(args)
}
}
and then, to add the button in test2, you need to access test by name
import javax.swing.JButton;
public class test2 {
public static void main(String[] args) {
JButton Button = new JButton();
test.frame.add(Button);
}
}
I have never actually worked with GUI's before when it comes to Java. I am trying to add a simple button to the JFrame, but it doesn't add. This is the way that I have been seeing online can someone point out what I'm doing wrong?
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.event.*;
public class WavPlayer
{
public void go()
{
JFrame frame = new JFrame("Wav Player");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//JButton play = new JButton("test");
play = new JButton("Test");
frame.setSize(500, 500);
add(play);
}
public static void main(String [] args)
{
WavPlayer player = new WavPlayer();
player.go();
}
}
You have to specifiy where you want your button to be added.
use frame.add(play) instead of add(play)
You also have several other errors in this code, you have to state the type of "play".
To actually see something, you have to set the visibility of your Frame.
Here is my Code for your Problem (I renamed the class, you have to Change it):
public void go(){
JFrame frame = new JFrame("Wav Player");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JButton play = new JButton("Test");
frame.setSize(500, 500);
frame.add(play);
frame.setVisible(true);
}
public static void main(String [] args)
{
Main player = new Main();
player.go();
}
I have written a Java XML Parser as an Applet. It is looking and functioning well enough in this form.
My Question, Is if I want to run this without a browser, how Would I properly wrap it to run as an executable?
GUI.java
--------------
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
public class GUI extends JPanel implements ActionListener
{
/**
*
*/
private static final long serialVersionUID = 1L;
private Parser xmlEditor;
private String startTimeValue;
private String endTimeValue;
public GUI(){
init();
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable(){
#Override
public void run() {
new GUI();
}
});
}
public void init() {
this.setXmlEditor(new Parser("C:\\Users\\Administrator\\workspace\\XMLParser\\src\\test.xml"));
add(new Label("Start Time"));
startTimeValue = xmlEditor.getStartTimeValue();
endTimeValue = xmlEditor.getEndTimeValue();
startTime = new TextField(startTimeValue);
add(new Label("End Time"));
endTime = new TextField(endTimeValue);
save = new Button("save");
save.addActionListener(this);
add(startTime);
add(endTime);
add(save);
}
public void actionPerformed(ActionEvent e)
{
System.out.println(endTime.getText());
xmlEditor.updateStartTimeValue(startTime.getText());
xmlEditor.updateEndTimeValue(endTime.getText());
System.out.println(e);
System.exit(0);
}
public Parser getXmlEditor() {
return xmlEditor;
}
public void setXmlEditor(Parser xmlEditor) {
this.xmlEditor = xmlEditor;
}
TextField startTime, endTime;
Button save;
}
While trying things with Swing and JFRame etc, I am not getting properly layout, or am opening multiple windows. Can anyone provide assistance? The second Panel Keeps replacing the First. Id like to really try to learn how to place multiple components inside an executable jar is the goal.
SwingPaintDemo.java
import java.awt.Label;
import java.awt.TextField;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.JFrame;
public class SwingPaintDemo {
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
private static void createAndShowGUI() {
System.out.println("Created GUI on EDT? "+
SwingUtilities.isEventDispatchThread());
JFrame f = new JFrame("Test");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
Parser myParser = new Parser("C:\\Users\\Administrator\\workspace\\XMLParser\\src\\test.xml");
JPanel top = new JPanel();
top.add(new Label("Start Time"));
TextField startTimeField = new TextField(myParser.getStartTimeValue());
top.add(startTimeField);
f.getContentPane().add(top);
JPanel bottom = new JPanel();
bottom.add(new Label("End Time"));
TextField endTimeField = new TextField(myParser.getEndTimeValue());
bottom.add(endTimeField);
f.getContentPane().add(bottom);
f.pack();
}
}
JFrame uses a BorderLayout by default, where as a JPanel uses a FlowLayout
Instead of rebuilding the UI in the JFrame, simply add an instance of GUI to it, since you've already defined the functionality in a JPanel, this makes it easily reusable.
public class SwingPaintDemo {
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
private static void createAndShowGUI() {
System.out.println("Created GUI on EDT? "+
SwingUtilities.isEventDispatchThread());
JFrame f = new JFrame("Test");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.getContentPane().add(new GUI());
f.pack();
f.setVisible(true);
}
}
FYI: You should never reference src in any path element, src won't exist once the program is built and packaged. This is also doubly concerning for applets, as applets run in a tight security model, which prevents them from accessing the file system by default.
Instead, you should be using Class#getResource or Class#getResourceAsStream, depending on your needs.
this.setXmlEditor(new Parser(getClass().getResource("/test.xml")));
for example. You may need to change your Parser to accept either a URL and/or InputStream as well
I'm just getting into GUI programming, slowly learning.
However I'm having a problem right of the bat. I can't get the Fore/Background color to change in my window at all.
However when I add a label via JLabel and then use setFore/Back, they change colors just fine. Just not the whole window.
I thought .setForeground and .setBackground are supposed to change the color of the window?
import javax.swing.*;
import java.awt.*;
public class MyWindow {
public static void main(String args[])
{
Runnable init = new Runnable()
{
public void run()
{
JFrame myWindow = new JFrame("Hola!");
myWindow.setForeground(Color.YELLOW);
myWindow.setBackground(Color.YELLOW);
myWindow.setSize(400, 300);
myWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
myWindow.setLayout(null);
myWindow.setVisible(true);
}
};
SwingUtilities.invokeLater(init);
}
}
First of all, do not use a null layout. Let the layout manager do its job. Second of all, you need to set the background of the content pane of the JFrame instance, as such
myWindow.getContentPane().setBackground(Color.YELLOW);
See also:
Using Top-Level Containers
you cannot color a frame. However you can color the ContentPane inside.
import javax.swing.*;
import java.awt.*;
public class MyWindow {
public static void main(String args[])
{
Runnable init = new Runnable()
{
public void run()
{
JFrame myWindow = new JFrame("Hola!");
myWindow.getContentPane().setBackground(Color.YELLOW);
myWindow.setSize(400, 300);
myWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
myWindow.setLayout(null);
myWindow.setVisible(true);
}
};
SwingUtilities.invokeLater(init);
}
}
this should fix your problem...
tangina naman ang bobo naman neto, pokegooo
import javax.swing.;
import java.awt.;
public class MyWindow {
public static void main(String args[])
{
Runnable init = new Runnable()
{
public void run()
{
JFrame myWindow = new JFrame("Hola!");
myWindow.getContentPane().setBackground(Color.YELLOW);
myWindow.setSize(400, 300);
myWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
myWindow.setLayout(null);
myWindow.setVisible(true);
}
};
SwingUtilities.invokeLater(init);
}
}
// tanga amputa aral ka muna dudong
// pakangkang