Appletviewer on Windows XP
Hi,
I am using XP Pro, and have jdk1.6.0_13 installed. I'm working on an applet, and would like to use appletviewer to debug it. It's not loading, though - absolutely nothing happens when I tell appletviewer to open my .html file. ("appletviewer test.html") No error message either on the command line or in the Java console, it just returns to the command line without having done anything.
If I type "appletviewer" into the command line, I get a nice Java error message telling me I need to tell appletviewer what to open. So it's definitely finding appletviewer - appletviewer just isn't doing anything when I call it.
Here's the code in my HTML document:
<html>
<head>
<title>Test</title>
</head>
<body>
<applet code="reading.class"></applet>
</body>
</html>... from what I can tell, appletviewer should be able to detect <applet> tags. The applet loads perfectly if I open the HTML file in a Browser.
I've tried reinstalling the JDK. No alteration.
Anyone know what I'm doing wrong?
Thanks in advance.
When I launch that HTML with AppletViewer on Ubuntu, I get..
andrew@pc1:~$ appletviewer appletviewertest.html
Warning: <applet> tag requires width attribute.
andrew@pc1:~$ No AppletViewer or applet appears.
When I take it on over to the [W3C HTML Validator|http://validator.w3.org/], it is more specific, listing (amongst the errors)
# Line 10, Column 29: required attribute "WIDTH" not specified
<applet code="reading.class"></applet>
The attribute given above is required for an element that you've used, but you have omitted it. For instance, in most HTML and XHTML document types the "type" attribute is required on the "script" element and the "alt" attribute is required for the "img" element.
Typical values for type are type="text/css" for <style> and type="text/javascript" for <script>.
# Error Line 10, Column 29: required attribute "HEIGHT" not specified
...That your 'browser' had no difficulties with the HTML is no surprise if you happened to be using IE (which is not so much a web browser, as an OS component). More than 50% of the code of IE, at one stage, was there purely for guessing what the HTML tag soup that people call HTML (much of which was generated by MS tools) was intended to mean.
Testing web pages or applets in that OS component is largely ineffective. One should not rely on the behaviour of IE as being any guarantee of correctness.
I think the best strategy for testing Applets is to use AppletViewer or Appleteer for the basic testing during development. And once the Applet seems to work OK in those, test on at least 2 major browsers (e.g. IE/FF) and throw in one or two others (Opera, Chrome..).
2 final notes about the applet element you showed.
1) The ".class" addition to the 'code' attribute is unnecessary.
2) Java naming conventions would have the class name as 'Reading', not 'reading'.
Similar Messages
-
I feel bad about asking help. But I don't know where else to turn to. I searched the archives to no avail. I'm not sure this is a CLASSPATH problem or what but every time I run appletviewer I get "I/O exception while reading: E:\j2sdk1.4.0\bin\e:\java\ticker.class (The system cannot find the path specified)" Now obviously that is not a valid path. It looks like it's concated two different paths together and I don't exactly know WHAT path it is reading in the first place. Is this the CLASSPATH path? Or simply the PATH path? I don't understand. I don't know how to get Ms-Dos to display the current setting for CLASSPATH. I know how to set CLASSPATH= which I've tried many times setting the path to the correct directory or setting it to null with "set CLASSPATH=" Anyone help? I'd love to start to get to work on my java studies and I won't be able to until I can get this to work. Funny thing, it WAS working only a week ago before it started doing this and I don't have a clue why. When I run appletviewer from the ms-dos prompt, it seems to work for a moment, but then just returns to the prompt. No error. I get the error when I run appletviewer from windows run. (had to break it right before it closed the window to see the error it was displaying)
Hi,
Gather patience, don't worry, say by step:
what your Operation System (Win9x, WinNT, ??);?
what in your PATH, CLASSPATH;?
where put it "E:\j2sdk1.4.0\bin\e:\java\ticker.class"?
how and where you run your applet?
what is that "E:\j2sdk1.4.0\bin\e:\java\ticker.class"?
If it a PATH, put between pathes " ; " and take out ticker.class:
PATH E:\j2sdk1.4.0\bin\; e:\java\and run
appletviewer ticker.htmlticker.html must contain:
<applet code=ticker.class width=200 height=200>
</applet>
Good Luck,
~Hill -
Hi all,
I am new to applet (very very new...).
I am trying to convert a java program into an java applet and it always froze when closing the appletviewer's window. So I created a very simple dummy program, which only consists of one button, but when I click to close the window, it still forzes. Many thanks!!
Here comes the simple code.
public class test extends JApplet{
public void init()
this.setSize(new Dimension(200,200));
this.getContentPane().add(new JButton("test"));
}I've no idea if this has anything to do with it, but setting the size of an applet in the code seems a weird thing to do: the size is defined by the HTML/CSS in which it lives.
I've never used the applet viewer either - always do my testing in browsers. -
Applet not showing in browser OR appletviewer window not appearing
hi
1. I have small java code - hello.java
import java.awt.Graphics;
public class hello extends java.applet.Applet
public void paint(Graphics g)
g.drawString("Hello java...................",600,300);
which correctly compiled
2. then I wrote an html file - hello.htm
<HTML>
<HEAD>
<TITLE>HELLO</TITLE>
</HEAD>
<BODY>
<appllet code="hello.class" width=400 height=400>hello not supported
</appllet>
</BODY>
</HTML>
3. but F:\javacode>appletviewer hello.htm not showing appletviwer window
command prompt move to F:\javacode>
4. opend the hello.htm through browser, "hello not supported " appearing instead of applet
5. both files in same folder
6. I am using IE8 & firefox (XP sp2)
whQuite apart from which a String drawn at [600, 300] wouldn't be visible in an Applet of width 400.
db
edit
Use code tags to post codes -- [code]CODE[/code] will display asCODEOr click the CODE button and paste your code between the {code} tags that appear.
Edited by: DarrylBurke -
Createprocess failed for AppletViewer Windows NT error #193
Hi all,
I am evaluating jdev 2.0 and I have created a workspace and
project on one machine which has a wizard generated master-
detail applet. I can log on to the DB and browse records
successfully in run mode.
When I copy this directory and all associated files to a second
machine and attempt to run it, I get the following error:
createprocess failed for AppletViewer Windows NT error #193
I then created a new workspace/project as above and I still get
this error message.
HELP! TIA Paul Valdetaro
nullThis is not the problem - I am the administrator on both
machines. I have tried the suggested solution in any event, and
there is no change. I have tried reinstalling your product and
this produces the same result. The weird thing thing is that
the infobus data wizard works fine in design mode but the applet
bombs in run mode.
JDeveloper Team (guest) wrote:
: Hi
: Looks like some config problem with NT. You may have to check
: what WindowNT error #193 means with your sysadmin or so
: for ex:-
: createprocess failed for appletviewer, Windows NT error #5
: is ERROR_ACCESS_DENIED
: For the above example eroor look at who ownership and
protection
: of the exe(s) and dlls in your installation of jdeveloper.
: One suggestion for the above example problem is to select the
: JDEV home directory and change the permission of all files &
sub
: directories to "full control for Everyone".
: regards
: Paul Valdetaro (guest) wrote:
: : Hi all,
: : I am evaluating jdev 2.0 and I have created a workspace and
: : project on one machine which has a wizard generated master-
: : detail applet. I can log on to the DB and browse records
: : successfully in run mode.
: : When I copy this directory and all associated files to a
second
: : machine and attempt to run it, I get the following error:
: : createprocess failed for AppletViewer Windows NT error
: #193
: : I then created a new workspace/project as above and I still
get
: : this error message.
: : HELP! TIA Paul Valdetaro
null -
How can we change the windows title in the appletviewer and of then new window when using SeparateFrame=true ?
Thanks in advance
nullHow can we change the windows title in the appletviewer and of then new window when using SeparateFrame=true ?
Thanks in advance
null -
Starting size of my appletviewer window
I want to create an applet of a certain size using Eclipse. I then want to run it using Eclipses appletviewer. My problem is that the appletviewer opens in a window smaller than the content i want to view. Although I can resize the appletviewer-window manually, I'd like to have it in a proper size from the beginning. Do you know how to set the window size at developing time?
thanksAt which place of my applet do i have to call the setSize() method? And what setSize() method? Applet.setSize() ?
edit: Placed it in the init() method. Workd. Thanks
Message was edited by:
haunse -
Applet not getting loaded in Windows Vista's Mozilla Browser
Hi,
When I open the URL http://www.operamini.com/demo/ , the applet in that site gets loaded from windows XP and linux, but not from windows vista, for the same firefox version. When I refer the Java console I get the message lissted below.
c: clear console window
f: finalize objects on finalization queue
g: garbage collect
h: display this help message
l: dump classloader list
m: print memory usage
o: trigger logging
p: reload proxy configuration
q: hide console
r: reload policy configuration
s: dump system and deployment properties
t: dump thread list
v: dump thread stack
x: clear classloader cache
0-5: set trace level to <n>
load: class org.microemu.applet.Main not found.
java.lang.ClassNotFoundException: org.microemu.applet.Main
at sun.applet.AppletClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.applet.AppletClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.applet.AppletClassLoader.loadCode(Unknown Source)
at sun.applet.AppletPanel.createApplet(Unknown Source)
at sun.plugin.AppletViewer.createApplet(Unknown Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)What can be the reason? what should be done to overcome this?Is it due to any version incompatibility of Java? I have no idea regarding this.
Please help
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Forms 6.0 Server and Appletviewer
Help!!! I've been trying for days to get the forms 6.0 server to work with my forms through the appletviewer.When I try to run the form through the applet viewer using static.htm the developer splash screen comes up a java window opens then nothing happens.
I can however run the form through developer forms designer in the appletviewer when I do run as a web form.Does your static.htm page have the username, password, and hostname in the SERVERARGS parameter? If not, try adding it and see what happens.
-
Applet working on JBuilder but not on appletviewer!!!!!
I ve made a keybord.Here some buttons are missing. The user presses the buttons and shapes a word!When the jButton22 is pressed(Comparison button) the applet tells him if the result is true or false and displays an image(imageIcon foruser in jlabel forusers) with the correct result!!The jlabel for users is setVisible(false) and setVisible(true) when the comparison button is pressed and the result is wrong.My problem is that the jlabel works fine in JBuilder but when i run the applet in appletviewer the jlabel forusers isnt showing!!If i minimize and maximize the window then the label appears and from that point is working properly!Any suggestions would be appreciated!Thank you!!
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import javax.swing.*;
public class Applet5 extends Applet {
JLabel frase = new JLabel();
JLabel forusers = new JLabel();
JLabel string = new JLabel();
JLabel message = new JLabel();
JLabel plikt = new JLabel();
JLabel gram = new JLabel();
JLabel sint = new JLabel();
JLabel vrah = new JLabel();
JLabel end = new JLabel();
JLabel dior = new JLabel();
JLabel befforusers = new JLabel();
JLabel[] jLabel = new JLabel[6];
ImageIcon myIcon1 = new ImageIcon((Applet5.class.getResource("drawing/1.jpg")));
ImageIcon myIcon2 = new ImageIcon((Applet5.class.getResource("drawing/2.jpg")));
ImageIcon myIcon3 = new ImageIcon((Applet5.class.getResource("drawing/3.jpg")));
ImageIcon myIcon4 = new ImageIcon((Applet5.class.getResource("drawing/4.jpg")));
ImageIcon myIcon5 = new ImageIcon((Applet5.class.getResource("drawing/5.jpg")));
ImageIcon foruser1 = new ImageIcon((Applet5.class.getResource("foruser/foruser1.jpg")));
ImageIcon foruser2 = new ImageIcon((Applet5.class.getResource("foruser/foruser2.jpg")));
ImageIcon foruser3 = new ImageIcon((Applet5.class.getResource("foruser/foruser3.jpg")));
ImageIcon foruser4 = new ImageIcon((Applet5.class.getResource("foruser/foruser4.jpg")));
ImageIcon foruser5 = new ImageIcon((Applet5.class.getResource("foruser/foruser5.jpg")));
ImageIcon frases1= new ImageIcon((Applet5.class.getResource("frase/frase1.jpg")));
ImageIcon frases2= new ImageIcon((Applet5.class.getResource("frase/frase2.jpg")));
ImageIcon frases3= new ImageIcon((Applet5.class.getResource("frase/frase3.jpg")));
ImageIcon frases4= new ImageIcon((Applet5.class.getResource("frase/frase4.jpg")));
ImageIcon frases5= new ImageIcon((Applet5.class.getResource("frase/frase5.jpg")));
ImageIcon telos = new ImageIcon((Applet5.class.getResource("end/telos.jpg")));
ImageIcon diorth = new ImageIcon((Applet5.class.getResource("dior/dior.jpg")));
String[] user= new String[6];
JButton jButton1 = new JButton("1..");
JButton jButton2 = new JButton("2..");
JButton jButton3 = new JButton("3..");
JButton jButton4 = new JButton("4..");
JButton jButton5 = new JButton("5..");
JButton jButton21 = new JButton("��������");
JButton jButton22 = new JButton("��������");
JButton jButton23 = new JButton("����������");
JButton jButton24 = new JButton("������� ������");
JButton jButton25 = new JButton("������");
Font f = new Font("Palatino LinoType", Font.PLAIN, 18);
Font g = new Font("TimesRoman", Font.PLAIN, 0);
Font c = new Font("Palatino Linotype",Font.PLAIN, 14);
Font p = new Font("Palatino Linotype",Font.PLAIN, 14);
String s = new String();
int nextLabelToShowIcon = 1;
int l=0;
int current = 0;
int cur = 0;
int str = 1;
FlowLayout flowLayout1 = new FlowLayout();
public void init() {
try {
jbInit();
catch(Exception e) {
e.printStackTrace();
user[1]=new String("82."+"ken"+"62."+"82."+"59."+"77."+"82."+"94."+"ken"+"107"+"127"+"77."+"ken"
+"151"+"ken"+"1.."+"69."+"107"+"53."+"93."+"59."+"82."+"94."+"ken"+"30."+"1.."+"13."+"82."+"114"
+"82."+"94.");
user[2]=new String("1.."+"66."+"23."+"ken"+"74."+"31."+"77."+"ken"+"82."+"ken"+"30."+"62."+"1.."
+"59."+"82."+"94."+"ken"+"62."+"1.."+"59."+"ken"+"82."+"114"+"62."+"ken"+"1.."+"77."+"ken"+"107"+"59."+"94."
+"ken"+"1.."+"93."+"77."+"53."+"99."+"82.");
user[3]=new String("59."+"77."+"2.."+"ken"+"107"+"59."+"ken"+"30."+"ken"+"31."+"74."+"31."+"ken"+"29."
+"46."+"82."+"107"+"2.."+"ken"+"107"+"82."+"ken"+"82."+"77."+"82."+"74."+"1.."+"ken"+"94."+"82."+"114"
+"ken"+"13."+"65."+"1.."+"94."+"123"+"53."+"74."+"38."+"107"+"1.."+"59.");
user[4]=new String("74."+"35."+"1.."+"65."+"127"+"94."+"ken"+"82."+"ken"+"159"+"ken"+"109"+"120"
+"ken"+"82."+"59."+"62."+"38."+"82."+"120"+"ken"+"107"+"59."+"74."+"2.."+"ken"+"56."+"31."+"93."+"1.."
+"85."+"82."+"77."+"107"+"2.."+"94.");
jLabel[1] = new JLabel();
jLabel[2] = new JLabel();
jLabel[3] = new JLabel();
jLabel[4] = new JLabel();
jLabel[5] = new JLabel();
jButton1.setPreferredSize(new Dimension(32, 30));
jButton1.setIcon(myIcon1);
jButton1.setFont(g);
jButton1.setVerticalTextPosition(SwingConstants.CENTER);
jButton1.setHorizontalTextPosition(SwingConstants.CENTER);
jButton1.addActionListener(new Applet5_jButton1_actionAdapter(this));
jButton2.setPreferredSize(new Dimension(32, 30));
jButton2.setIcon(myIcon2);
jButton2.setFont(g);
jButton2.setVerticalTextPosition(SwingConstants.CENTER);
jButton2.setHorizontalTextPosition(SwingConstants.CENTER);
jButton2.addActionListener(new Applet5_jButton2_actionAdapter(this));
jButton3.setPreferredSize(new Dimension(32, 30));
jButton3.setIcon(myIcon3);
jButton3.setFont(g);
jButton3.setVerticalTextPosition(SwingConstants.CENTER);
jButton3.setHorizontalTextPosition(SwingConstants.CENTER);
jButton3.addActionListener(new Applet5_jButton3_actionAdapter(this));
jButton4.setPreferredSize(new Dimension(36, 30));
jButton4.setIcon(myIcon4);
jButton4.setFont(g);
jButton4.setVerticalTextPosition(SwingConstants.CENTER);
jButton4.setHorizontalTextPosition(SwingConstants.CENTER);
jButton4.addActionListener(new Applet5_jButton4_actionAdapter(this));
jButton5.setPreferredSize(new Dimension(37, 30));
jButton5.setIcon(myIcon5);
jButton5.setVerticalTextPosition(SwingConstants.CENTER);
jButton5.setHorizontalTextPosition(SwingConstants.CENTER);
jButton5.setFont(g);
jButton5.addActionListener(new Applet5_jButton5_actionAdapter(this));
jButton21.addActionListener(new Applet5_jButton21_actionAdapter(this));
jButton22.addActionListener(new Applet5_jButton22_actionAdapter(this));
jButton23.addActionListener(new Applet5_jButton23_actionAdapter(this));
jButton24.addActionListener(new Applet5_jButton24_actionAdapter(this));
jButton25.addActionListener(new Applet5_jButton25_actionAdapter(this));
frase.setIcon(frases1);
frase.setPreferredSize(new Dimension(750,40));
message.setPreferredSize(new Dimension(220, 30));
befforusers.setPreferredSize(new Dimension(1000,50));
forusers.setIcon(foruser1);
forusers.setPreferredSize(new Dimension(1000,50));
forusers.setVisible(false);
end.setPreferredSize(new Dimension(210,30));
end.setVisible(false);
dior.setIcon(diorth);
dior.setPreferredSize(new Dimension(81,30));
dior.setVisible(false);
plikt.setText("������������");
gram.setText("�������� & ���������� ���������");
sint.setText("����������");
vrah.setText("������������");
message.setFont(p);
plikt.setFont(f);
gram.setFont(c);
sint.setFont(c);
vrah.setFont(c);
string.setVisible(false);
this.setLayout(flowLayout1);
jLabel[1].setPreferredSize(new Dimension(50, 50));
jLabel[2].setPreferredSize(new Dimension(50, 50));
jLabel[3].setPreferredSize(new Dimension(50, 50));
jLabel[4].setPreferredSize(new Dimension(50, 50));
jLabel[5].setPreferredSize(new Dimension(50, 50));
this.add(plikt);
this.add(gram);
this.add(jButton1);
this.add(jButton2);
this.add(jButton3);
this.add(jButton4);
this.add(jButton5);
this.add(dior);
this.add(jButton21);
this.add(jButton22);
this.add(jButton23);
this.add(jButton24);
this.add(jButton25);
this.add(end);
this.add(frase);
this.add(message);
this.add(befforusers);
this.add(forusers);
this.add(jLabel[1]);
this.add(jLabel[2]);
this.add(jLabel[3]);
this.add(jLabel[4]);
this.add(jLabel[5]);
this.add(string);
private void next2(){
if(str==0);
string.setText(user[1]);
if(str==1)
string.setText(user[2]);
if(str==2)
string.setText(user[3]);
if(str==3);
string.setText(user[4]);
if(str==4)
string.setText(user[5]);
str++;
private void next1(){
if(cur==0)
forusers.setIcon(foruser2);
else if(cur==1)
forusers.setIcon(foruser3);
else if(cur==2)
forusers.setIcon(foruser4);
else if(cur==3)
forusers.setIcon(foruser5);
else if(cur==4)
forusers.setIcon(foruser6);
cur++;
private void next(){
if(current==0)
frase.setIcon(frases2);
else if(current==1)
frase.setIcon(frases3);
else if(current==2)
frase.setIcon(frases4);
else if(current==3)
frase.setIcon(frases5);
current++;
void jButton1_actionPerformed(ActionEvent e) {
if (nextLabelToShowIcon == 1)
jLabel[1].setIcon(myIcon1);
else if (nextLabelToShowIcon == 2)
jLabel[2].setIcon(myIcon1);
else if (nextLabelToShowIcon == 3)
jLabel[3].setIcon(myIcon1);
else if (nextLabelToShowIcon == 4)
jLabel[4].setIcon(myIcon1);
else if (nextLabelToShowIcon == 5)
jLabel[5].setIcon(myIcon1);
s = s + jButton1.getText();
nextLabelToShowIcon++;l++; jButton21.setVisible(true); dior.setVisible(false);
void jButton2_actionPerformed(ActionEvent e) {
if (nextLabelToShowIcon == 1)
jLabel[1].setIcon(myIcon2);
else if (nextLabelToShowIcon == 2)
jLabel[2].setIcon(myIcon2);
else if (nextLabelToShowIcon == 3)
jLabel[3].setIcon(myIcon2);
else if (nextLabelToShowIcon == 4)
jLabel[4].setIcon(myIcon2);
else if (nextLabelToShowIcon == 5)
jLabel[5].setIcon(myIcon2);
s = s + jButton2.getText();
nextLabelToShowIcon++;l++; jButton21.setVisible(true); dior.setVisible(false);}
void jButton3_actionPerformed(ActionEvent e) {
if (nextLabelToShowIcon == 1)
jLabel[1].setIcon(myIcon3);
else if (nextLabelToShowIcon == 2)
jLabel[2].setIcon(myIcon3);
else if (nextLabelToShowIcon == 3)
jLabel[3].setIcon(myIcon3);
else if (nextLabelToShowIcon == 4)
jLabel[4].setIcon(myIcon3);
else if (nextLabelToShowIcon == 5)
jLabel[5].setIcon(myIcon3);
s = s + jButton3.getText();
nextLabelToShowIcon++;l++; jButton21.setVisible(true); dior.setVisible(false);}
void jButton4_actionPerformed(ActionEvent e) {
if (nextLabelToShowIcon == 1)
jLabel[1].setIcon(myIcon4);
else if (nextLabelToShowIcon == 2)
jLabel[2].setIcon(myIcon4);
else if (nextLabelToShowIcon == 3)
jLabel[3].setIcon(myIcon4);
else if (nextLabelToShowIcon == 4)
jLabel[4].setIcon(myIcon4);
else if (nextLabelToShowIcon == 5)
jLabel[5].setIcon(myIcon4);
s = s + jButton4.getText();
nextLabelToShowIcon++;l++; jButton21.setVisible(true); dior.setVisible(false);}
void jButton5_actionPerformed(ActionEvent e) {
if (nextLabelToShowIcon == 1)
jLabel[1].setIcon(myIcon5);
else if (nextLabelToShowIcon == 2)
jLabel[2].setIcon(myIcon5);
else if (nextLabelToShowIcon == 3)
jLabel[3].setIcon(myIcon5);
else if (nextLabelToShowIcon == 4)
jLabel[4].setIcon(myIcon5);
else if (nextLabelToShowIcon == 5)
jLabel[5].setIcon(myIcon5);
s = s + jButton5.getText();
nextLabelToShowIcon++;l++; jButton21.setVisible(true); dior.setVisible(false);}
void jButton21_actionPerformed(ActionEvent e) {
if(nextLabelToShowIcon>1){
jLabel[l].setIcon(null);
s = s.substring(0, s.length()-3);
l = l - 1;
nextLabelToShowIcon = nextLabelToShowIcon - 1;}
else{
jButton21.setVisible(false);
dior.setVisible(true);
l=0;
s="";
nextLabelToShowIcon=1;}
void jButton22_actionPerformed(ActionEvent e) {
if(s.length()>0){
if (s.equals(user[str])) {
message.setText("������ ����� �����");
else {
forusers.getIcon();
forusers.setVisible(true);
befforusers.setVisible(false);
message.setText("�����. � ����� ������� ����� : ");
repaint();
jButton1.setDisabledIcon(myIcon1);
jButton2.setDisabledIcon(myIcon2);
jButton3.setDisabledIcon(myIcon3);
jButton4.setDisabledIcon(myIcon4);
jButton5.setDisabledIcon(myIcon5);
jButton1.setEnabled(false);
jButton2.setEnabled(false);
jButton3.setEnabled(false);
jButton4.setEnabled(false);
jButton5.setEnabled(false);
jButton21.setEnabled(false);
void jButton23_actionPerformed(ActionEvent e) {
dior.setVisible(false);
jButton21.setEnabled(true);
jButton21.setVisible(true);
s="";
l=0;
nextLabelToShowIcon=1;
message.setText("");
befforusers.setVisible(true);
forusers.setVisible(false);
jLabel[1].setIcon(null);
jLabel[2].setIcon(null);
jLabel[3].setIcon(null);
jLabel[4].setIcon(null);
jLabel[5].setIcon(null);
jButton1.setEnabled(true);
jButton2.setEnabled(true);
jButton3.setEnabled(true);
jButton4.setEnabled(true);
jButton5.setEnabled(true);
void jButton24_actionPerformed(ActionEvent e) {
jButton21.setVisible(true);
jButton21.setEnabled(true);
dior.setVisible(false);
nextLabelToShowIcon=1;
jButton1.setEnabled(true);
jButton2.setEnabled(true);
jButton3.setEnabled(true);
jButton4.setEnabled(true);
jButton5.setEnabled(true);
jButton6.setEnabled(true);
l=0;
befforusers.setVisible(true);
forusers.setVisible(false);
next1();
next();
next2();
s="";
message.setText("");
jLabel[1].setIcon(null);
jLabel[2].setIcon(null);
jLabel[3].setIcon(null);
jLabel[4].setIcon(null);
jLabel[5].setIcon(null);
void jButton25_actionPerformed(ActionEvent e) {
public void paint(Graphics g) {
super.paint(g);}
private boolean isStandalone = false;
public String getParameter(String key, String def) {
return isStandalone ? System.getProperty(key, def) :
(getParameter(key) != null ? getParameter(key) : def);
private void jbInit() throws Exception {
public String getAppletInfo() {
return "Applet Information";
public String[][] getParameterInfo() {
return null;
public static void main(String[] args) {
Applet5 applet = new Applet5();
applet.isStandalone = true;
Frame frame = new Frame();
frame.add(applet, BorderLayout.CENTER);
applet.init();
applet.start();
frame.setSize(450,400);
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
frame.setLocation((d.width - frame.getSize().width) / 2, (d.height - frame.getSize().height) / 2);
frame.setVisible(true);
frame.setResizable(false);
class Applet5_jButton1_actionAdapter
implements java.awt.event.ActionListener {
Applet5 adaptee;
Applet5_jButton1_actionAdapter(Applet5 adaptee) {
this.adaptee = adaptee;
public void actionPerformed(ActionEvent e) {
adaptee.jButton1_actionPerformed(e);
class Applet5_jButton2_actionAdapter
implements java.awt.event.ActionListener {
Applet5 adaptee;
Applet5_jButton2_actionAdapter(Applet5 adaptee) {
this.adaptee = adaptee;
public void actionPerformed(ActionEvent e) {
adaptee.jButton2_actionPerformed(e);
class Applet5_jButton3_actionAdapter
implements java.awt.event.ActionListener {
Applet5 adaptee;
Applet5_jButton3_actionAdapter(Applet5 adaptee) {
this.adaptee = adaptee;
public void actionPerformed(ActionEvent e) {
adaptee.jButton3_actionPerformed(e);
class Applet5_jButton4_actionAdapter
implements java.awt.event.ActionListener {
Applet5 adaptee;
Applet5_jButton4_actionAdapter(Applet5 adaptee) {
this.adaptee = adaptee;
public void actionPerformed(ActionEvent e) {
adaptee.jButton4_actionPerformed(e);
class Applet5_jButton5_actionAdapter
implements java.awt.event.ActionListener {
Applet5 adaptee;
Applet5_jButton5_actionAdapter(Applet5 adaptee) {
this.adaptee = adaptee;
public void actionPerformed(ActionEvent e) {
adaptee.jButton5_actionPerformed(e);
class Applet5_jButton21_actionAdapter
implements java.awt.event.ActionListener {
Applet5 adaptee;
Applet5_jButton21_actionAdapter(Applet5 adaptee) {
this.adaptee = adaptee;
public void actionPerformed(ActionEvent e) {
adaptee.jButton21_actionPerformed(e);
class Applet5_jButton22_actionAdapter
implements java.awt.event.ActionListener {
Applet5 adaptee;
Applet5_jButton22_actionAdapter(Applet5 adaptee) {
this.adaptee = adaptee;
public void actionPerformed(ActionEvent e) {
adaptee.jButton22_actionPerformed(e);
class Applet5_jButton23_actionAdapter
implements java.awt.event.ActionListener {
Applet5 adaptee;
Applet5_jButton23_actionAdapter(Applet5 adaptee) {
this.adaptee = adaptee;
public void actionPerformed(ActionEvent e) {
adaptee.jButton23_actionPerformed(e);
class Applet5_jButton24_actionAdapter
implements java.awt.event.ActionListener {
Applet5 adaptee;
Applet5_jButton24_actionAdapter(Applet5 adaptee) {
this.adaptee = adaptee;
public void actionPerformed(ActionEvent e) {
adaptee.jButton24_actionPerformed(e);
class Applet5_jButton25_actionAdapter
implements java.awt.event.ActionListener {
Applet5 adaptee;
Applet5_jButton25_actionAdapter(Applet5 adaptee) {
this.adaptee = adaptee;
public void actionPerformed(ActionEvent e) {
adaptee.jButton25_actionPerformed(e);
}I performed some testing on your program, and get an ArrayIndexOutOfBoundsException on one of the buttons. So, I guess there have to be some implementation logic error.
Since I have no idea what your program is trying to achieve, here's what you can do:
1. Try to shorten your program.
2. Add your code piece by piece.
3. Perform some logic testing.
4. Repeat steps 2 & 3. -
ActionPerformed method not working when applet is loaded in browser window.
Hey there guys. I need urgent help from anybody who has experience in deploying websites whose code is in java.
I am having two problems as mentioned below...
first, I have made a simple login screen using java swing and JApplet. there is a single button to login. the action performed for this button accesses a private method to check the username and password which are there in atext file. the applet is working perfectly in appletviewer but when i load the applet in a Internet Explorer window using HTML's Applet tag, the button is giving no response at all even when i enter the correct username and password.
I guess it is either not calling the private function that is checking the username and password from the tes=xt file or it can not access the file. Please help as soon as possible as this is related to my college project.
I am attaching the code herewith. Suggestions to improve the coding are also welcome.
the second problem is that while writing my second program for generating a form which registers a user the html is not at all loading the applet into the browser and also if im trying to access a file to write all the details into the console is showing numerous amount of error after i press the button which i can't not understand. the only thing i can understand is that it is related to file access permissions. If anybody could put some light on the working of worker threads and thread safe activities of SwingUtilities.invokeandWait method it would be really appreciable.
import java.io.*;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.event.*;
import javax.swing.plaf.*;
<applet code = "UserLogin" width = 300 height = 150>
</applet>
public class UserLogin extends JApplet implements ActionListener, KeyListener {
private JLabel lTitle;
private JLabel lUsername, lPassword;
private JTextField tUsername;
private JPasswordField tPassword;
private JButton bLogin;
private JLabel lLinkRegister, lLinkForgot;
private JLabel lEmpty = new JLabel(" ", JLabel.CENTER);
private JPanel panel1, panel2;
public void init() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
SwingUtilities.invokeAndWait(new Runnable() {
public void run() {
LoginGUI();
catch(Exception e) {
e.printStackTrace();
public void start() {
setVisible(true);
public void stop() {
setVisible(false);
private void LoginGUI() {
super.setSize(300, 150);
super.setBackground(Color.white);
lTitle = new JLabel("<HTML><BODY><FONT FACE = \"COURIER NEW\" SIZE = 6 COLOR = BLUE>Login</FONT></BODY></HTML>", JLabel.CENTER);
lUsername = new JLabel("Username : ", JLabel.CENTER);
lPassword = new JLabel("Password : ", JLabel.CENTER);
tUsername = new JTextField(15);
tPassword = new JPasswordField(15);
bLogin = new JButton("LOGIN");
// bLogin.setEnabled(false);
bLogin.addActionListener(this);
bLogin.addKeyListener(this);
panel2 = new JPanel();
GridBagLayout gbag = new GridBagLayout();
GridBagConstraints gbc = new GridBagConstraints();
panel2.setLayout(gbag);
panel2.addKeyListener(this);
gbc.anchor = GridBagConstraints.CENTER;
panel2.setMinimumSize(new Dimension(300, 200));
panel2.setMaximumSize(panel2.getMinimumSize());
panel2.setPreferredSize(panel2.getMinimumSize());
gbc.gridx = 1;
gbc.gridy = 1;
gbag.setConstraints(lUsername,gbc);
panel2.add(lUsername);
gbc.gridx = 2;
gbc.gridy = 1;
gbag.setConstraints(tUsername,gbc);
panel2.add(tUsername);
gbc.gridx = 1;
gbc.gridy = 2;
gbag.setConstraints(lPassword,gbc);
panel2.add(lPassword);
gbc.gridx = 2;
gbc.gridy = 2;
gbag.setConstraints(tPassword,gbc);
panel2.add(tPassword);
gbc.gridx = 2;
gbc.gridy = 3;
gbag.setConstraints(lEmpty,gbc);
panel2.add(lEmpty);
gbc.gridx = 2;
gbc.gridy = 4;
gbag.setConstraints(bLogin,gbc);
panel2.add(bLogin);
panel1 = new JPanel(new BorderLayout());
panel1.add(lTitle, BorderLayout.NORTH);
panel1.add(panel2, BorderLayout.CENTER);
add(panel1);
setVisible(true);
public void keyReleased(KeyEvent ke) {}
public void keyTyped(KeyEvent ke) {}
public void keyPressed(KeyEvent ke) {
if(ke.getKeyCode() == KeyEvent.VK_ENTER){
String username = tUsername.getText();
String password = new String(tPassword.getPassword());
if(username.length() == 0 || password.length() == 0) {
JOptionPane.showMessageDialog(new JFrame(),"You must enter a username and password to login", "Error", JOptionPane.ERROR_MESSAGE);
else {
boolean flag = checkUsernamePassword(username, password);
if(flag)
JOptionPane.showMessageDialog(new JFrame(),"Username and Password Accepted", "Access Granted", JOptionPane.INFORMATION_MESSAGE);
else
JOptionPane.showMessageDialog(new JFrame(),"Username or password Incorrect", "Access Denied", JOptionPane.INFORMATION_MESSAGE);
public void actionPerformed(ActionEvent ae) {
String gotCommand = ae.getActionCommand();
if(gotCommand.equals("LOGIN")) {
String username = tUsername.getText();
String password = new String(tPassword.getPassword());
if(username.length() == 0 || password.length() == 0) {
JOptionPane.showMessageDialog(new JFrame(),"You must enter a username and password to login", "Error", JOptionPane.ERROR_MESSAGE);
else {
boolean flag = checkUsernamePassword(username, password);
if(flag)
JOptionPane.showMessageDialog(new JFrame(),"Username and Password Accepted", "Access Granted", JOptionPane.INFORMATION_MESSAGE);
else
JOptionPane.showMessageDialog(new JFrame(),"Username or password Incorrect", "Access Denied", JOptionPane.INFORMATION_MESSAGE);
private boolean checkUsernamePassword(String username, String password) {
String user = null, pswd = null;
try {
FileInputStream fin = new FileInputStream("@data\\userpass.txt");
DataInputStream din = new DataInputStream(fin);
BufferedReader brin = new BufferedReader(new InputStreamReader(din));
user = (String) brin.readLine();
pswd = (String) brin.readLine();
catch(IOException ioe) {
ioe.printStackTrace();
if(username.equals(user) && password.equals(pswd))
return true;
else
return false;
}PLEASE HELP ME GUYS......RockAsh wrote:
Hey Andrew, first of all sorry for that shout, it was un-intentional as i am new to posting topics on forums and didn't new that this kind of writing is meant as shouting. Cool.
Secondly thank you for taking interest in my concern.No worries.
Thirdly, as i mentioned before, I am reading i file for checking of username and password. the file is named as "userpass.txt" and is saved in the directory named "@data" which is kept in the same directory in which my class file resides.OK - server-side. That makes some sense, and makes things easier. The problem with your current code is that the applet will be looking for that directory on the end user's local file system. Of course the file does not exist there, so the applet will fail unless the the end user is using the same machine as the server is coming from.
To get access to a resource on the server - the place the applet lives - requires an URL. In applets, URLs are relatively easy to form. It might be something along the lines of
URL urlToPswrd = new URL(getCodeBase(), "@data/userpass.txt");
InputStream is = urlToPswrd.openStream();
DataInputStream din = new DataInputStream(is);
So the problem is that it is reading the file and showing the specific output dialog box when i run it through appletviewer.. Huhh. What version of the SDK are you using? More recent applet viewers should report security exceptions if the File exists.
..but the same is not happening when i launch the applet in my browser window using the code as written belowHave you discovered how to open the Java Console in the browser yet? It is important.
Also the answer to your second question
Also, the entire approach to storing/restoring the password is potentially wrong. For instance, where is it supposed to be stored, on the server, or on the client?is that, as of now it is just my college project so all the data files and the username and password wiles will be stored on my laptop only i.e. on the client only. no server involved.OK, but understand that an applet ultimately does not make much sense unless deployed through a server. And the entire server/client distinction becomes very important, since that code would be searching for a non-existent file on the computer of the end user. -
Hello,
My applets ran very well with Windows 2000 server but, with Windows 98, these applets don't run anymore.
Here is the error:
java.lang.IllegalArgumentException at sun.net.www.ParseUtil.decode(Unknown Source)
at sun.net.www.protocol.file.Handler.openConnection(Unknown Source)
at sun.plugin.net.protocol.file.Handler.openConnection(Unknown Source)
at java.net.URL.openConnection(Unknown Source)
at sun.applet.AppletPanel.getAccessControlContext(Unknown Source)
at sun.applet.AppletPanel.getClassLoader(Unknown Source)
at sun.applet.AppletPanel.createAppletThread(Unknown Source)
at sun.applet.AppletPanel.init(Unknown Source)
at sun.plugin.AppletViewer.appletInit(Unknown Source)
at sun.plugin.viewer.LifeCycleManager.initAppletPanel(Unknown Source)
at sun.plugin.viewer.IExplorerPluginObject$Initer.run(Unknown Source)
Could you help me ?
Thank you.after having written "java -version":
java version "1.4.0_02"
Java(TM) 2 Runtime Environment, Standard Edition
(build 1.4.0_02-b02)
Java HotSpot(TM) Client VM (build 1.4.0_02-b02, mixed mode) -
Windows Vista "java.lang.ClassNotFoundException: loader.class" error.
Hello,
Whenever I try to visit websites that have a java applet I get a dialogue with the following error:
java.lang.ClassNotFoundException: loader.class.
I have tried uninstalling/reinstalling java, and also adding the -xmx and -xms parameters for java applet runtime setting in control panel with various values from 128m to 1g.
The applet at http://www.java.com/en/download/installed.jsp?detect=jre&try=1 does work and reports "CONGRATULATIONS, you have the Latest version of Java!", "Java Runtime Version 1.6.0."
I have been experiencing this problem ever since I installed Windows Vista Home Premium a day or two ago. Any help is appreciated.
Regards
Greg
=====================================
Full output from Java Console
=====================================
Java Plug-in 1.6.0
Using JRE version 1.6.0 Java HotSpot(TM) Client VM
User home directory = C:\Users\Greg Taylor
c: clear console window
f: finalize objects on finalization queue
g: garbage collect
h: display this help message
l: dump classloader list
m: print memory usage
o: trigger logging
p: reload proxy configuration
q: hide console
r: reload policy configuration
s: dump system and deployment properties
t: dump thread list
v: dump thread stack
x: clear classloader cache
0-5: set trace level to <n>
load: class loader.class not found.
java.lang.ClassNotFoundException: loader.class
at sun.applet.AppletClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.applet.AppletClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.applet.AppletClassLoader.loadCode(Unknown Source)
at sun.applet.AppletPanel.createApplet(Unknown Source)
at sun.plugin.AppletViewer.createApplet(Unknown Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: open HTTP connection failed.
at sun.applet.AppletClassLoader.getBytes(Unknown Source)
at sun.applet.AppletClassLoader.access$100(Unknown Source)
at sun.applet.AppletClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
... 10 more
java.lang.ClassNotFoundException: loader.class
at sun.applet.AppletClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.applet.AppletClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.applet.AppletClassLoader.loadCode(Unknown Source)
at sun.applet.AppletPanel.createApplet(Unknown Source)
at sun.plugin.AppletViewer.createApplet(Unknown Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: open HTTP connection failed.
at sun.applet.AppletClassLoader.getBytes(Unknown Source)
at sun.applet.AppletClassLoader.access$100(Unknown Source)
at sun.applet.AppletClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
... 10 moreive been having the same problems, if youve resolved this problem, please tell me.
all help is appreciated -
Appletviewer Problem. Please help!
I had JRE 6 update 5. I wanted to try out appletviewer, so downloaded JDK. But this was version 1.4.2_17. Appletviewer did not work, saying registry value is 1.6 whereas it should be 1.4, & it cannot find java.dll & Java 2 runtime environment. So I uninstalled everything, & reinstalled JDK 1.4.2_17. APPLETVIEWER WORKED. But when I went to Java website to check latest version, it said you don't have latest version. So I fished for latest version of JDK, found, downloaded & installed jdk-6u5-windows-i586-p.exe, after uninstalling 1.4.2_17. Now again appletviewer has stopped working & gives the same error message about registry (1.6 instead of 1.4), java.dll not found & Java 2 RE not found. Tried adding Java bin path in system environment variable. Did not work. Please help. Is this a bug in JDK 6 update 5?
Coming somewhat closer to the solution
You understand that JDK and JRE both are differently installed.
Not to panic.You can install JRE of 1.4 and then set your class path to that jre 1.4.
Hope you got the point where you're missing.
good luck. -
Java Applet Window Warning - Appearing through
Hello
The warning that is displayed on applet windows now when using java is causing a problem.
When you bring a fresh web page or word document over the top of the applet window, the java applet warning is still visible as if it has been brought to the front layer. but the rest of the applet is behind the new active window.
Really weird.
Ben.Our team is also using a signed applet and are having trouble with popup items not being accessible outside of the JFrame.
In appletviewer the popup (JXDatePicker) is fully accessible. If running in Internet Explorer on Windows 2000 the portion of the popup outside of the JFrame paints correctly but cannot receive click events correctly.
It would be preferrable that if the popup cannot receive events outside of the applet frame that the popup would be smart enough to pop itself fully in the applet frame.
Any suggestions?
Thank you.
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