Label Doesn't Show Up On Applet Until Another Tab Is Clicked

Jan 17, 2015

I'm working on an applet for my class. I decided to use AWT even though it's really old.

I'm having trouble with the labels on my program. They don't show up until I click another tab in the browser and then go back to it each time after I click on a button. I tried to use repaint() but it doesn't seem to work. What can I do?

import java.awt.*;
import java.applet.*;
import java.awt.event.*;
import java.awt.event.ActionListener;
import java.awt.color.*;
public class FinalTwo extends Applet implements ActionListener{
Button b1;
Button b2;

[Code]...

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JTable Elements Only Show Up When Clicked On Or JFrame Resized

Jan 18, 2015

This is an old project that I had working probably 2 years ago. Since I reopened it the only thing I have changed is the database location. This is a very basic project I did to dip my toes in to Java. I'm going to add it to my portfolio but just to clarify I am not a Java developer so this is mainly there to show that I am not completely blind when it comes to Java.

//Import libraries
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.KeyEvent;
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.sql.Connection;
import java.sql.DriverManager;

[Code]...

Errors when I click the button that launches the JFrame:

Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 6 >= 6
at java.util.Vector.elementAt(Unknown Source)
at javax.swing.table.DefaultTableModel.getValueAt(Unknown Source)
at javax.swing.JTable.getValueAt(Unknown Source)
at javax.swing.JTable.prepareRenderer(Unknown Source)
at javax.swing.plaf.basic.BasicTableUI.paintCell(Unknown Source)

[Code]...

It will launch the window but it will be blank. If I resize the window it will show me the headers. If I click below the headers were the data should be, it will show me the data.

Since it has been so long the only thing I can think of is some of the code has become antiquated. As I said, this was working originally. I just fired it up again to take some screenshots for my portfolio.

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I've an image memorized into a databas in tinyblob form.

I call it in java in this mode:

Product p = new Product();
...
p.setImgByte(rs.getByte("ImmagineByte"));

(p is a javabean, and imgByte is a byte format variable)

Once done that, what i've to do for show it into a swing label?

I've already setted an image retrieving it from an url in this mode

PHP Code: Image img = ImageIO.read(new URL(a.getImmagine()));
Image resizedImage = img.getScaledInstance(imgContainer.getWidth(), imgContainer.getHeight(), Image.SCALE_SMOOTH);
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But i don't know how to do the same thing with a byte format image inteasd of the url...

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Jun 22, 2014

I have an applet which I want to embed into HTML. In applet viewer in Eclipse IDE the view is this(see pict01), and when I access my index.php on local server I get this view(see pict02). I don't know what I am doing wrong. I checked it with Firefox, IE and chrome. No changes. Here is source code:

import java.util.*;
import java.io.*;
import javax.swing.*;
import java.awt.*;
import java.applet.*;
import java.net.URL;
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//static final int WIDTH = 8;
//static final int HEIGHT = 12;

[Code] ......

I have these files in my local servers folder where I am trying to access it from(see pict03).

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I'm trying to open an image within a JFrame but the image doesn't show. The directory path is correct. The JFrame opens perfectly but no image is showing.

JFrame frame = new JFrame("IMAGE");
frame.setSize(500,500);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
ImageIcon image = new ImageIcon("images/main.jpg");
JLabel label = new JLabel("", image, JLabel.CENTER);
JPanel panel = new JPanel(new BorderLayout());
panel.add( label, BorderLayout.CENTER );
frame.setVisible(true);

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Aug 7, 2014

I compiled the applet, then put the applet in an HTML file using notepad and saved the html file in the right place for it to run correctly. The HTML file runs smoothly, but then it only shows the scrollbar part of my applet, and not the images or any text...

Why is This?????

Java Code:

import java.awt.*;
import java.applet.Applet;
import java.awt.event.*;
import javax.swing.ImageIcon;
public class Temperature_Convert extends Applet
implements AdjustmentListener {
private Image temp;
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private int old, newtemp = 0;

[code]....

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Nov 14, 2010

I am adding JLabels to my JPanel, and the last one always does not show up. For example if I add 3 JLabels, the 3rd will not show up. If i change it to add 4, the 4th will not show up, but the 3rd will now. Here is a snipit of what my code looks like:

setLayout(new BorderLayout());
for(int x=0; x<PEDALCOUNT; x++)
{
pedals[x].setBounds((x*PEDALWIDTH),0,PEDALWIDTH,PEDALHEIGHT );
add(pedals[x]);
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A workaround that I DO NOT want to keep doing is to put an extra fake JLabel at the end of the for loop, that way everything I want to show up does, but the fake one does not.

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Jul 11, 2014

I built my application under Windows XP (x32), Eclipse Luna (x32), JDK 1.8 (x32 - beta version B116).
 
When i launch it, the splashscreen (preloader) appears !
 
I rebuilt my application under Windows 7 (x64), Eclipse Luna x64, JDK 1.8.0_20 (x64).
 
When i launch it, the splashscreen doesn't appear !!!
 
For information, The structure of my application :
 
app
     | libs
          | preloader.jar
 
myapplication.jar
 
runtime
 
The behavior of JDK 1.8.0_20 about the management of the preloading mecanism is it different of the behavior of JDK 1.8 (B116) ?

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The PNG Image is already in the src package thingie...

It's a 400 * 258 image...

Java Code: package frame;
import java.awt.*;
import java.applet.Applet;
import java.awt.event.*;
public class Temperature_Convert extends Applet
implements AdjustmentListener {
private Image temp;
private Scrollbar bar;

[code]....

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import javax.swing.*;
import java.awt.*;
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showStatus("applet");
}
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This code does nothing to my statusbar.

I use applet viewer for my applet.

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Nov 6, 2014

I'm doing a software Java GUI - JFrame form like this:

1. The user wants to click on a button that opens a bunch of images that will be displayed as thumbnail in the bottom of the JFrame .
2. Then the user wants to select/click one of the thumbnail and make appear the corresponding image in it's original size on above(center) of the JFrame.

For doing this I used 3 JPanel.

One contains a JButton that opens the jfilechoser dialog window,
the second "panelPreview" is for putting the thumbnails created,
and the third "panelGrande" is for the image in it's original size.

The firs part "1." is ok.

But in the second part : I got one error when I want to put the ImageIcon in to the JLabel with the further intent of displaying it.

lblBig(imgIcoVett[i]);

In this project I'm dealing with arrays of ImageIcons and JLabels, so it's a bit advanced level for me, so I'm not sure that I wrote right the part of the MouseListener too.

The error displayed by netbeans says "cannot find symbol symbol: method lbl (ImageIcon) local variables referenced from an inner class must be final or effectively final"

Here I attach the project I did with netbeans"AAAD Unlayout 2.zip", but if you just need the highlight of the code, here it is too:
 
private javax.swing.JButton btnOpenfile;
private javax.swing.JFileChooser jFileChooser1;
private javax.swing.JPanel jPanel1;
private javax.swing.JLabel lblBig;
private javax.swing.JPanel panelGrande;
private javax.swing.JPanel panelPreview;

[Code] ....

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Nov 18, 2014

I need a code to get a text from a textField to a label but the label is on a different frame, i will give u an example of what i have so far. so this is the main:

package albaestate;
public class AlbaEstate {
public static void main(String[] args) {
Frame1 first = new Frame1();
first.setVisible(true);
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/*[B]now i have the first frame where i input the information[/B]*/
 
package albaestate;
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public Frame1() {
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[Code] ....

What i need is to input the code so that in jLabel5 i get the text from jTextField1 in Frame1; in jLabel6 i need the text from jTextField2 also in Frame1; and in jLabel7 i want to display the calculation of what the jbutton1 in Frame1 is calculating.

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Apr 30, 2015

I have the following code.

class A {
List<StringBuilder> list;
public void output(List<StringBuilder> objectToOutput){
try(BufferedWriter bw = new BufferedWriter(new FileWriter("temp.txt"))){
for(StringBuilder row:objectToOutput) bw.write(row.toString());
}catch(IOException e){}

[code]....

Why don't the a's show up on the console? I put them in as part of the debugging process and now I don't understand why they don't show up in both places.

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Apr 2, 2014

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I have two classes one is called main.java another is called Gui.java

in gui.java, will create a JFrame and some component.here is some code in main.java.

Java Code:

public static void main(String[] args){
while(true)//will always loop once user close the window
Gui gui = new Gui();
gui.setVisible();
if()//at here need to determine button in Gui.java is press or not to process the user input
{
String fromUser = gui.Jusertxt.getText();
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} mh_sh_highlight_all('java');

what is the code need to use to know Button in Gui.java is clicked or not? i try use method to return true value, but in not working.

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Mar 20, 2014

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InputStream in;
try {
in = new FileInputStream(new File("failure1.wav"));
AudioStream audios = new AudioStream(in);
AudioPlayer.player.start(audios);
} catch (Exception e) {
}

just wondering why it does load;

i do get the warning

warning: AudioStream is internal proprietary API and may be removed in a future release
AudioStream audios = new AudioStream(in);
warning: AudioStream is internal proprietary API and may be removed in a future release
AudioStream audios = new AudioStream(in);
warning: AudioPlayer is internal proprietary API and may be removed in a future release
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I am using netbeans swing to do my little project . I have one table which is populated by data from a database. I also have another table which should be populated when a user selects a certain row in the first table.Both table have only one column. The logic is when a user selects on row 1,the data in that row should be obtained and should be used to search for certain entities in the database which are returned and used to populate table 2.So after a user selects row1 and decides to select row2 the second table should be updated accordingly. I have attached the java file

/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package UI;

import java.awt.CardLayout;
import java.sql.SQLException;
import java.util.logging.Level;

[Code] ....

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import javax.swing.*;
import java.awt.*;
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import java.awt.event.ActionEvent;
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import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.ImageIcon;
 
[Code] .....

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I did have some code for this initially but I as it did not work at the time and was causing issues to my project I got rid of it. I have my code for the jtree,the listener and the prop file.

Tree

Java Code:

JPanel panel_1 = new JPanel();
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Java Code: add = Adds files changes in your working directory to your index. Example: git add .

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I have a question and wasn't able to find what I needed through the search. I am currently using Netbeans 8.0 and working on a desktop app. I have a main GUI file where I am going to add a menu item that can be clicked to open up an "About" Dialog box. The problem is, I don't know how to do this

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What it's supposed to do: This code is supposed to see if the clicked card is selected. If it's not, select it and show the player where it can move / attack. If it is selected, then find out what card the player clicked on. If he clicked on the card that was already selected, deselect it. If he clicks on a friendly card (same playerID), then select that card. If he clicks on an enemy card (different playerID), attack that card. If he clicks on a tile, move it to that tile.

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Java Code:

@Override
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mainloop: for (int i = 0; i < Main.cards.size(); i++) {
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