Applet can't be instantiated
I'm trying to run an applet within IE, but it won't work.
The applet is compiled for 1.1, and it works in appletviewer just fine...what could be the problem?
//Component initialization
private void Init() throws Exception {
this.setLayout(gridBagLayout1);
jPanelVariables.setLayout(gridBagLayout2);
labelPV.setText("Starting Principal");
labelr.setText("Interest Rate");
labeln.setLocale(java.util.Locale.getDefault());
labeln.setText("Years");
labelFV.setText("Future Value");
textFieldPV.setColumns(10);
textFieldPV.setText("100000");
textFieldr.setColumns(10);
textFieldr.setText("8.0");
textFieldn.setColumns(10);
textFieldn.setText("15");
textFieldFV.setColumns(10);
textFieldFV.setText("");
buttonCalculate.setLabel("Calculate");
buttonCalculate.addActionListener(this);
this.add(jPanelVariables, new GridBagConstraints(0, 0, 1, 1, 0.0, 0.0
,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
jPanelVariables.add(labelPV, new GridBagConstraints(0, 0, 1, 1, 0.0, 0.0
,GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
jPanelVariables.add(labelr, new GridBagConstraints(0, 1, 1, 1, 0.0, 0.0
,GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
jPanelVariables.add(labeln, new GridBagConstraints(0, 2, 1, 1, 0.0, 0.0
,GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
jPanelVariables.add(labelFV, new GridBagConstraints(0, 3, 1, 1, 0.0, 0.0
,GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
jPanelVariables.add(textFieldPV, new GridBagConstraints(1, 0, 1, 1, 0.0, 0.0
,GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
jPanelVariables.add(textFieldr, new GridBagConstraints(1, 1, 1, 1, 0.0, 0.0
,GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
jPanelVariables.add(textFieldn, new GridBagConstraints(1, 2, 2, 1, 0.0, 0.0
,GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
jPanelVariables.add(textFieldFV, new GridBagConstraints(1, 3, 1, 1, 0.0, 0.0
,GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
jPanelVariables.add(buttonCalculate, new GridBagConstraints(0, 4, 2, 1, 0.0, 0.0
,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
}Here's the full code for the initialization stuff that goes on the screen...instead of doing it this way, should I make a paint() and redo this in there?
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Applet can't be instantiated on IE browser.
I have created an SWING Applet (JApplet). It works fine inside JDeveloper IDE using the Appletviewer but when I deploy it and I try to launch it through the Internet Explorer browser I get the following message:
"Applet can't be instantiated".
I'm working with JDeveloper 3.1.1.2
Can somebody help me out with this? I will really appreciate it.
nullIn the java console of IE are you getting any class not found errors?
Please refer to the following URL (Swing Applet Test ) to check whether your browser supports swing classes or not.
http://java.sun.com/products/jfc/tsc/articles/getting_started/applet_test.html
Another way to create and run Swing applets in IE or netscape is to use Java Plug-in.
null -
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I'm posting the codes for the html and the two files I've made.
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import java.awt.*;
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this.add(str);Errmmm... errors?
How could it have errors when it runs perfectly well with appletviewer? I used the modification you suggested and it did run using appletviewer.
Better yet, it can be compiled by java. I don't think there are errors, really since that kind of error you stated I feel should be found by the Java compiler, that's where I usually encounter such errors.
I'm not really sure if it's how I compiled it(Since somebody told me to compile it using javac -target 1.1 ArchiveName.java and it worked on my other projects that don't have inheritance and uses other classes) I really don't have an idea if it was compiled using 1.1 JVM since I only mostly know the principles of Java and not exactly the more advanced parts.
Besides MyList.java:9 reads like this
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the value i indicates an integer.
So it's not a String array rather a String object. Maybe something wrong with my post? -
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Thanksgo to
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// The "AcidRainApplet" class.
import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
import java.util.Date;
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g.drawString ("PRESS ENTER", 200, 200);
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x = width / 2;
y = height - 100;
count = 0;
playing = true;
pause = true;
points = 0;
maxRain = 200;
speed = 5;
for (int i = 0 ; i < maxRain ; i++)
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int x = (int) (Math.random () * width);
int y = 0;
int sp = (int) (Math.random () * 5) + 2;
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int key = k.getKeyCode ();
if (!(pause))
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numRain -= 10;
repaint ();
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Somethings I can quickly tell are,
the constructor in AcidRainApplet not useful, Rain implementing Applet not useful, implements KeyListener, ActionListener can be delegated to another class, usage of inner class can be rethinked of delegation can be given a thought. Following code can be thought of :
class Rain
private int x = 0;
private int y = 0;
private int sp = 0;
Rain ()
reset();
public int getX() {
return x;
public int getY() {
return y;
public void setX(int x) {
this.x = x;
public void setY(int y) {
this.y = y;
public void reset() {
x = (int) (Math.random () * width);
y = 0;
sp = (int) (Math.random () * 5) + 2;
}Good wishes,
Rajesh -
Hi guys
Just having trouble running this applet for some reason, in any browser. Other applets are working at the minute, so it doesn't look like a prob with the browsers or JVM.
Heres the code, followed by the error message.
import java.awt.*;
import java.applet.*;
import java.awt.event.*;
public abstract class ColourButtons extends Applet
implements ActionListener, MouseListener
private Button colorButtons[] = new Button[7];
private Color color = Color.black;
int x1, y1, x2, y2 = 1;
public void init()
setLayout(new BorderLayout(20,20));
Panel pWest = new Panel();
pWest.setLayout(new GridLayout(7,1));
for(int x =0; x <= 6; x++)
colorButtons[x] = new Button(" ");
pWest.add(colorButtons[x]);
add("West",pWest);
//add actionlisteners for each button
colorButtons[x].addActionListener(this);
if(x == 0){
color = Color.red;}
else if( x==1){
color = Color.blue;}
else if(x==2){
color = Color.green;}
else if(x==3){
color = Color.yellow;}
else if(x==4){
color = Color.orange;}
else if(x==5){
color = Color.black;}
else if(x==6){
color = Color.white;}
colorButtons[x].setBackground(color);
setBackground(Color.gray);
public void paint(Graphics g)
Graphics2D g2 = (Graphics2D)g;
g2.setColor(color);
//create Rectangle Object
Rectangle myRectangle = new Rectangle(x1,y1,x2,y2);
g2.draw(myRectangle);
g2.drawString("HELLO", 150,100);
public void actionPerformed(ActionEvent a)
Button button = (Button)a.getSource();
color = button.getBackground();
repaint();
public void mouseClicked(MouseEvent e)
public void mouseEntered(MouseEvent e)
public void mouseExited(MouseEvent e)
public void mousePressed(MouseEvent e)
x1 = e.getX();
y1 = e.getY();
public void mouseReleased(MouseEvent e)
x2 = e.getX();
y2 = e.getY();
}And heres the error message.
load: ColourButtons.class can't be instantiated.
java.lang.InstantiationException
at sun.reflect.InstantiationExceptionConstructorAccessorImpl.newInstance
(InstantiationExceptionConstructorAccessorImpl.java:30)
at java.lang.reflect.Constructor.newInstance(Constructor.java:274)
at java.lang.Class.newInstance0(Class.java:306)
at java.lang.Class.newInstance(Class.java:259)
at sun.applet.AppletPanel.createApplet(AppletPanel.java:566)
at sun.applet.AppletPanel.runLoader(AppletPanel.java:495)
at sun.applet.AppletPanel.run(AppletPanel.java:292)
at java.lang.Thread.run(Thread.java:536)
Any ideas at what is wrong?
Any help/pointers greatly appreciated
Cheersok cheers thats sorted it. For some reason it wanted it to be abstract once i added mouse listener i think.
Anyway cheers -
"Class can't be instantiated " error message. Help !
Dear Java People,
In trying to do a program that outputs a sound with every button click
I have no compilation errors but a runtime error that says:
"class can't be instantiated"
below is the program and below that the error message
thank you in advance
Norman
import java.util.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;
import java.applet.*;
import java.awt.event.*;
import java.net.*;
public abstract class MyMusicApplet_1 extends JApplet implements ActionListener, AppletContext
//AppletContext myAppletContext = new AppletContext();
//Iterator i = myAppletContext.getStreamKeys();
JButton myJButton;
AudioClip acSound_1;
AudioClip acSound_2;
AudioClip acSound_3;
AudioClip acSound_4;
AudioClip acSound_5;
AudioClip acSound_6;
AudioClip acSound_7;
AudioClip acSound_8;
AudioClip acSound_9;
JButton myJButtonSound1;
JButton myJButtonSound2;
JButton myJButtonSound3;
JButton myJButtonSound4;
JButton myJButtonSound5;
JButton myJButtonSound6;
JButton myJButtonSound7;
JButton myJButtonSound8;
JButton myJButtonSound9;
public void init()
try
acSound_1 = getAudioClip(new URL ("c:/Program Files/Cakewalk/Cakewalk Pro Audio 9/seashore.wrk"));
acSound_2 = getAudioClip(new URL ("c:/Program Files/Cakewalk/Cakewalk Pro Audio 9/seashore.wrk"));
acSound_3 = getAudioClip(new URL ("c:/Program Files/Cakewalk/Cakewalk Pro Audio 9/seashore.wrk"));
acSound_4 = getAudioClip(new URL ("c:/Program Files/Cakewalk/Cakewalk Pro Audio 9/seashore.wrk"));
acSound_5 = getAudioClip(new URL ("c:/Program Files/Cakewalk/Cakewalk Pro Audio 9/seashore.wrk"));
acSound_6 = getAudioClip(new URL ("c:/Program Files/Cakewalk/Cakewalk Pro Audio 9/seashore.wrk"));
acSound_7 = getAudioClip(new URL ("c:/Program Files/Cakewalk/Cakewalk Pro Audio 9/seashore.wrk"));
acSound_8 = getAudioClip(new URL ("c:/Program Files/Cakewalk/Cakewalk Pro Audio 9/seashore.wrk"));
acSound_9 = getAudioClip(new URL ("c:/Program Files/Cakewalk/Cakewalk Pro Audio 9/seashore.wrk"));
catch (MalformedURLException e)
System.out.println("Error here " );
Container myContentPane = getContentPane();
myContentPane.setLayout(new FlowLayout(FlowLayout.RIGHT));
Dimension buttonSize = new Dimension(190,100);
Font myFont = new Font("Arial", Font.BOLD,14);
Border myEdge = BorderFactory.createRaisedBevelBorder();
//create 1st button's object
myJButtonSound1 = new JButton("sound #1");
myJButtonSound1.addActionListener(this);
//set the button's border and size, font background and foreground
myJButtonSound1.setBorder(myEdge);
myJButtonSound1.setPreferredSize(buttonSize);
myJButtonSound1.setFont(myFont);
myJButtonSound1.setBackground(Color.orange);
myJButtonSound1.setForeground(Color.black);
//create 2nd button's object
myJButtonSound2 = new JButton("sound #2");
myJButtonSound2.addActionListener(this);
//set the button's border and size, font, background and foreground
myJButtonSound2.setBorder(myEdge);
myJButtonSound2.setPreferredSize(buttonSize);
myJButtonSound2.setFont(myFont);
myJButtonSound2.setBackground(Color.blue);
myJButtonSound2.setForeground(Color.black);
//create 3rd button's object
myJButtonSound3 = new JButton("sound #3");
myJButtonSound1.addActionListener(this);
//set the button's border and size, font, background and foreground
myJButtonSound3.setBorder(myEdge);
myJButtonSound3.setPreferredSize(buttonSize);
myJButtonSound3.setFont(myFont);
myJButtonSound3.setBackground(Color.cyan);
myJButtonSound3.setForeground(Color.black);
//create 4th button's object
myJButtonSound4 = new JButton("sound #4");
myJButtonSound4.addActionListener(this);
//set the button's border and size, font background and foreground
myJButtonSound4.setBorder(myEdge);
myJButtonSound4.setPreferredSize(buttonSize);
myJButtonSound4.setFont(myFont);
myJButtonSound4.setBackground(Color.pink);
myJButtonSound4.setForeground(Color.black);
//create 5th button's object
myJButtonSound5 = new JButton("sound #5");
myJButtonSound5.addActionListener(this);
//set the button's border and size, font background and foreground
myJButtonSound5.setBorder(myEdge);
myJButtonSound5.setPreferredSize(buttonSize);
myJButtonSound5.setFont(myFont);
myJButtonSound5.setBackground(Color.red);
myJButtonSound5.setForeground(Color.black);
//create 6th button's object
myJButtonSound6 = new JButton("sound #6");
myJButtonSound6.addActionListener(this);
//set the button's border and size, font, background and foreground
myJButtonSound6.setBorder(myEdge);
myJButtonSound6.setPreferredSize(buttonSize);
myJButtonSound6.setFont(myFont);
myJButtonSound6.setBackground(Color.pink);
myJButtonSound6.setForeground(Color.black);
//create 7th button's object
myJButtonSound7 = new JButton("Choice #7");
myJButtonSound7.addActionListener(this);
//set the button's border and size, font, background and foreground
myJButtonSound7.setBorder(myEdge);
myJButtonSound7.setPreferredSize(buttonSize);
myJButtonSound7.setFont(myFont);
myJButtonSound7.setBackground(Color.cyan);
myJButtonSound7.setForeground(Color.black);
//create 8th button's object
myJButtonSound8 = new JButton("Choice #8");
myJButtonSound8.addActionListener(this);
//set the button's border and size, font background and foreground
myJButtonSound8.setBorder(myEdge);
myJButtonSound8.setPreferredSize(buttonSize);
myJButtonSound8.setFont(myFont);
myJButtonSound8.setBackground(Color.yellow);
myJButtonSound8.setForeground(Color.black);
//create 9th button's object
myJButtonSound9 = new JButton("Choice #9");
myJButtonSound9.addActionListener(this);
//set the button's border and size, font background and foreground
myJButtonSound9.setBorder(myEdge);
myJButtonSound9.setPreferredSize(buttonSize);
myJButtonSound9.setFont(myFont);
myJButtonSound9.setBackground(Color.blue);
myJButtonSound9.setForeground(Color.black);
//add the buttons to the content pane
myContentPane.add(myJButtonSound1);
myContentPane.add(myJButtonSound2);
myContentPane.add(myJButtonSound3);
myContentPane.add(myJButtonSound4);
myContentPane.add(myJButtonSound5);
myContentPane.add(myJButtonSound6);
myContentPane.add(myJButtonSound7);
myContentPane.add(myJButtonSound8);
myContentPane.add(myJButtonSound9);
public void actionPerformed(ActionEvent e)
myJButton = (JButton)e.getSource();
if(myJButton == myJButtonSound1)
acSound_1.play();
if(myJButton == myJButtonSound2)
acSound_2.play();
if(myJButton == myJButtonSound3)
acSound_3.play();
if(myJButton == myJButtonSound4)
acSound_4.play();
if(myJButton == myJButtonSound5)
acSound_5.play();
if(myJButton == myJButtonSound6)
acSound_6.play();
if(myJButton == myJButtonSound7)
acSound_7.play();
if(myJButton == myJButtonSound8)
acSound_8.play();
if(myJButton == myJButtonSound9)
acSound_9.play();
java.lang.InstantiationException
at sun.reflect.InstantiationExceptionConstructorAccessorImpl.newInstance(InstantiationExceptionConstructorAccessorImpl.java:30)
at java.lang.reflect.Constructor.newInstance(Constructor.java:274)
load: stan_my_music_applet_1.MyMusicApplet_1.class can't be instantiated.
at java.lang.Class.newInstance0(Class.java:306)
at java.lang.Class.newInstance(Class.java:259)
at sun.applet.AppletPanel.createApplet(AppletPanel.java:566)
at sun.applet.AppletPanel.runLoader(AppletPanel.java:495)
at sun.applet.AppletPanel.run(AppletPanel.java:292)
at java.lang.Thread.run(Thread.java:536)I also tried:
try
for(int a=0;a<8;a++)
{acSounds[a] = getAudioClip(getCodeBase(),(new URL ("c:/Program Files/Cakewalk/Cakewalk Pro Audio 9/seashore" + (i + 1) + ".wrk")));
and the error message still says:
"MyMusicApplet3.java": Error #: 300 : method getAudioClip(java.net.URL, java.net.URL) not found in class stan_my_music_applet_3.MyMusicApplet3 at line 19
Help !
below is the revised code
Norman
import java.util.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;
import java.applet.*;
import java.awt.event.*;
import java.net.*;
public class MyMusicApplet3 extends JApplet implements ActionListener
AudioClip[] acSounds= new AudioClip[9];
public void init()
try
for(int a=0;a<8;a++)
{acSounds[a] = getAudioClip(getCodeBase(),(new URL ("c:/Program Files/Cakewalk/Cakewalk Pro Audio 9/seashore" + (a + 1) + ".wrk")));
catch (Exception e)
System.out.println("Error here " );
Container myContentPane = getContentPane();
myContentPane.setLayout(new FlowLayout(FlowLayout.RIGHT));
myContentPane.add(getButton("1", Color.orange));
myContentPane.add(getButton("2", Color.blue));
myContentPane.add(getButton("3", Color.cyan));
myContentPane.add(getButton("4", Color.pink));
myContentPane.add(getButton("5", Color.red));
myContentPane.add(getButton("6", Color.pink));
myContentPane.add(getButton("7", Color.cyan));
myContentPane.add(getButton("8", Color.yellow));
myContentPane.add(getButton("9", Color.blue));
public void actionPerformed(ActionEvent e)
String command = e.getActionCommand();
int index = Integer.parseInt(command)-1;
acSounds[index].play();
public JButton getButton(String label, Color fore)
{ JButton button = new JButton("sound "+label);
button.setPreferredSize(new Dimension(190,100));
button.setFont(new Font("Arial", Font.BOLD,14));
button.setBorder(BorderFactory.createRaisedBevelBorder());
button.setForeground(fore);
button.setBackground(Color.orange);
button.addActionListener(this);
button.setActionCommand(label);
return button;
}//"MyMusicApplet3.java": Error #: 300 :
//method getAudioClip(java.net.URL, java.net.URL) not found in class
// stan_my_music_applet_3.MyMusicApplet3 at line 19, column 24 -
Load:Tutorial.EmpApplet can't be instantiated ERROR
Hi,
By following JDevelopment 2.0 tutorial - Database Applet Tutorial
It was compiled successfully.
But when It was run, the ERROR occured !
" load:tutorial.EmpApplet can't be instantiated "
Anybody know why it happened ??
Thanks.
Youngho
nullUnfortunately these is a step missing in the tutorial for the
beta version. This is actually logged as a doc bug. Here is the
description:
For the database applet tutorial, you need to explicitly include
the JDBC classes111.zip file in the deployment archive. It does
not get pulled in automatically by the dependency checker.
Instructions for deployment need to instruct users to:
1. Click the Add File button for the Additions list box.
2. In the File Open dialog, navigate to and select the
aurora\lib\classes111.zip file.
3. Deploy.
Sorry, Roel.
Youngho Cho (guest) wrote:
: Hi,
: By following JDevelopment 2.0 tutorial - Database Applet
Tutorial
: It was compiled successfully.
: But when It was run, the ERROR occured !
: " load:tutorial.EmpApplet can't be instantiated "
: Anybody know why it happened ??
: Thanks.
: Youngho
null -
EmpApplet can't be instantiated ERROR
Hi,I'm having the same "tutorial.EmpApplet can't be
instantiated" problem everyone else seems to be having. I've
tried all the recommended solutions and nothing works. Here is
a copy of the output to the Java Console using Internet Explorer.
com.ms.security.SecurityExceptionEx
[com/sun/java/swing/UIManager.setLookAndFeel]:
java.io.IOException: bad path: D:\Program
Files\Oracle\JDeveloper 2.0.184
Beta\myclasses\com\sun\java\swing\plaf\metal\MetalLookAndFeel.cla
ss
at com/ms/security/permissions/FileIOPermission.check
at com/ms/security/PolicyEngine.deepCheck
at com/ms/security/PolicyEngine.checkPermission
at com/ms/security/StandardSecurityManager.chk
at com/ms/security/StandardSecurityManager.checkRead
at java/io/File.isDirectory
at sun/net/www/protocol/file/FileURLConnection.connect
at
sun/net/www/protocol/file/FileURLConnection.getInputStream
at
com/ms/vm/loader/ResourceLoader.getCodebaseRelativeData
at com/ms/vm/loader/ResourceLoader.getClassData
at com/ms/vm/loader/URLClassLoader.findClass
at com/ms/vm/loader/URLClassLoader.loadClass
at java/lang/ClassLoader.loadClassInternal at
java/lang/Class.forName
at com/sun/java/swing/UIManager.setLookAndFeel
at com/sun/java/swing/UIManager.initializeDefaultLAF
at com/sun/java/swing/UIManager.initialize
at com/sun/java/swing/UIManager.maybeInitialize
at com/sun/java/swing/UIManager.getDefaults
at com/sun/java/swing/UIManager.getColor
at borland/jbcl/control/BevelPanel.<init>
at borland/jbcl/control/ButtonBar.<init>
at borland/jbcl/control/NavigatorControl.<init>
at tutorial/QueryEmpPanel.<init> at
tutorial/EmpApplet.<init>
at com/ms/applet/BrowserAppletFrame.newInstance
at com/ms/applet/AppletPanel.processSentEvent
at com/ms/applet/AppletPanel.processSentEvent at
com/ms/applet/AppletPanel.run
at java/lang/Thread.runError loading class:
com.sun.java.swing.plaf.metal.MetalLookAndFeel
com.ms.security.SecurityExceptionEx
[com/sun/java/swing/UIManager.setLookAndFeel]:
java.io.IOException: bad path: D:\Program
Files\Oracle\JDeveloper 2.0.184
Beta\myclasses\com\sun\java\swing\plaf\metal\MetalLookAndFeel.cla
ss
com.ms.security.SecurityExceptionEx
[com/sun/java/swing/UIManager.setLookAndFeel]:
java.io.IOException: bad path: D:\Program
Files\Oracle\JDeveloper 2.0.184
Beta\myclasses\com\sun\java\swing\plaf\metal\MetalLookAndFeel.cla
ss
at com/ms/security/permissions/FileIOPermission.check
at com/ms/security/PolicyEngine.deepCheck
at com/ms/security/PolicyEngine.checkPermission
at com/ms/security/StandardSecurityManager.chk
at com/ms/security/StandardSecurityManager.checkRead
at java/io/File.isDirectory
at sun/net/www/protocol/file/FileURLConnection.connect
at
sun/net/www/protocol/file/FileURLConnection.getInputStream
at
com/ms/vm/loader/ResourceLoader.getCodebaseRelativeData
at com/ms/vm/loader/ResourceLoader.getClassData
at com/ms/vm/loader/URLClassLoader.findClass
at com/ms/vm/loader/URLClassLoader.loadClass
at java/lang/ClassLoader.loadClassInternal at
java/lang/Class.forName
at com/sun/java/swing/UIManager.setLookAndFeel
at com/sun/java/swing/UIManager.initializeDefaultLAF
at com/sun/java/swing/UIManager.initialize
at com/sun/java/swing/UIManager.maybeInitialize
at com/sun/java/swing/UIManager.getDefaults
at com/sun/java/swing/UIManager.getColor
at borland/jbcl/control/BevelPanel.<init>
at borland/jbcl/control/ButtonBar.<init>
at borland/jbcl/control/NavigatorControl.<init>
at tutorial/QueryEmpPanel.<init> at
tutorial/EmpApplet.<init>
at com/ms/applet/BrowserAppletFrame.newInstance
at com/ms/applet/AppletPanel.processSentEvent
at com/ms/applet/AppletPanel.processSentEvent at
com/ms/applet/AppletPanel.run
at java/lang/Thread.runError loading class:
com.sun.java.swing.plaf.metal.MetalLookAndFeel
com.ms.security.SecurityExceptionEx
[com/sun/java/swing/UIManager.setLookAndFeel]:
java.io.IOException: bad path: D:\Program
Files\Oracle\JDeveloper 2.0.184
Beta\myclasses\com\sun\java\swing\plaf\metal\MetalLookAndFeel.cla
ss
java.lang.InstantiationException: tutorial/EmpApplet
at com/ms/applet/BrowserAppletFrame.newInstance
at com/ms/applet/AppletPanel.processSentEvent
at com/ms/applet/AppletPanel.processSentEvent at
com/ms/applet/AppletPanel.run
at java/lang/Thread.run
Please help as I am trying to prove that JDeveloper is the way
our organization should go for Oracle development.
Thanks,
Joe Villarreal
nullJoe,
Does the version on IE that you are using support Swing 1.1 ?
Also, I am not sure why it is referring to the absolute path (D:
\Program Files\Oracle\JDeveloper 2.0.184
Beta\myclasses\com\sun\java\swing\plaf\metal\MetalLookAndFeel.cla
). Does your jar file have this path?
Regards,
Joe Villarreal (guest) wrote:
: Hi,I'm having the same "tutorial.EmpApplet can't be
: instantiated" problem everyone else seems to be having. I've
: tried all the recommended solutions and nothing works. Here
is
: a copy of the output to the Java Console using Internet
Explorer.
: com.ms.security.SecurityExceptionEx
: [com/sun/java/swing/UIManager.setLookAndFeel]:
: java.io.IOException: bad path: D:\Program
: Files\Oracle\JDeveloper 2.0.184
Beta\myclasses\com\sun\java\swing\plaf\metal\MetalLookAndFeel.cla
: ss
: at com/ms/security/permissions/FileIOPermission.check
: at com/ms/security/PolicyEngine.deepCheck
: at com/ms/security/PolicyEngine.checkPermission
: at com/ms/security/StandardSecurityManager.chk
: at com/ms/security/StandardSecurityManager.checkRead
: at java/io/File.isDirectory
: at sun/net/www/protocol/file/FileURLConnection.connect
: at
: sun/net/www/protocol/file/FileURLConnection.getInputStream
: at
: com/ms/vm/loader/ResourceLoader.getCodebaseRelativeData
: at com/ms/vm/loader/ResourceLoader.getClassData
: at com/ms/vm/loader/URLClassLoader.findClass
: at com/ms/vm/loader/URLClassLoader.loadClass
: at java/lang/ClassLoader.loadClassInternal at
: java/lang/Class.forName
: at com/sun/java/swing/UIManager.setLookAndFeel
: at com/sun/java/swing/UIManager.initializeDefaultLAF
: at com/sun/java/swing/UIManager.initialize
: at com/sun/java/swing/UIManager.maybeInitialize
: at com/sun/java/swing/UIManager.getDefaults
: at com/sun/java/swing/UIManager.getColor
: at borland/jbcl/control/BevelPanel.<init>
: at borland/jbcl/control/ButtonBar.<init>
: at borland/jbcl/control/NavigatorControl.<init>
: at tutorial/QueryEmpPanel.<init> at
: tutorial/EmpApplet.<init>
: at com/ms/applet/BrowserAppletFrame.newInstance
: at com/ms/applet/AppletPanel.processSentEvent
: at com/ms/applet/AppletPanel.processSentEvent at
: com/ms/applet/AppletPanel.run
: at java/lang/Thread.runError loading class:
: com.sun.java.swing.plaf.metal.MetalLookAndFeel
: com.ms.security.SecurityExceptionEx
: [com/sun/java/swing/UIManager.setLookAndFeel]:
: java.io.IOException: bad path: D:\Program
: Files\Oracle\JDeveloper 2.0.184
Beta\myclasses\com\sun\java\swing\plaf\metal\MetalLookAndFeel.cla
: ss
: com.ms.security.SecurityExceptionEx
: [com/sun/java/swing/UIManager.setLookAndFeel]:
: java.io.IOException: bad path: D:\Program
: Files\Oracle\JDeveloper 2.0.184
Beta\myclasses\com\sun\java\swing\plaf\metal\MetalLookAndFeel.cla
: ss
: at com/ms/security/permissions/FileIOPermission.check
: at com/ms/security/PolicyEngine.deepCheck
: at com/ms/security/PolicyEngine.checkPermission
: at com/ms/security/StandardSecurityManager.chk
: at com/ms/security/StandardSecurityManager.checkRead
: at java/io/File.isDirectory
: at sun/net/www/protocol/file/FileURLConnection.connect
: at
: sun/net/www/protocol/file/FileURLConnection.getInputStream
: at
: com/ms/vm/loader/ResourceLoader.getCodebaseRelativeData
: at com/ms/vm/loader/ResourceLoader.getClassData
: at com/ms/vm/loader/URLClassLoader.findClass
: at com/ms/vm/loader/URLClassLoader.loadClass
: at java/lang/ClassLoader.loadClassInternal at
: java/lang/Class.forName
: at com/sun/java/swing/UIManager.setLookAndFeel
: at com/sun/java/swing/UIManager.initializeDefaultLAF
: at com/sun/java/swing/UIManager.initialize
: at com/sun/java/swing/UIManager.maybeInitialize
: at com/sun/java/swing/UIManager.getDefaults
: at com/sun/java/swing/UIManager.getColor
: at borland/jbcl/control/BevelPanel.<init>
: at borland/jbcl/control/ButtonBar.<init>
: at borland/jbcl/control/NavigatorControl.<init>
: at tutorial/QueryEmpPanel.<init> at
: tutorial/EmpApplet.<init>
: at com/ms/applet/BrowserAppletFrame.newInstance
: at com/ms/applet/AppletPanel.processSentEvent
: at com/ms/applet/AppletPanel.processSentEvent at
: com/ms/applet/AppletPanel.run
: at java/lang/Thread.runError loading class:
: com.sun.java.swing.plaf.metal.MetalLookAndFeel
: com.ms.security.SecurityExceptionEx
: [com/sun/java/swing/UIManager.setLookAndFeel]:
: java.io.IOException: bad path: D:\Program
: Files\Oracle\JDeveloper 2.0.184
Beta\myclasses\com\sun\java\swing\plaf\metal\MetalLookAndFeel.cla
: ss
: java.lang.InstantiationException: tutorial/EmpApplet
: at com/ms/applet/BrowserAppletFrame.newInstance
: at com/ms/applet/AppletPanel.processSentEvent
: at com/ms/applet/AppletPanel.processSentEvent at
: com/ms/applet/AppletPanel.run
: at java/lang/Thread.run
: Please help as I am trying to prove that JDeveloper is the way
: our organization should go for Oracle development.
: Thanks,
: Joe Villarreal
null -
Hello,
I'm trying to deploy an applet since one week, but I have no
luck. Can anyone help?
Running the applet from JDeveloper works well (accessing
Oracle8i with InfoBus).
I made a jar-archive without excluding any class.
But when I apply the applet (package25.Applet25) in the browser,
there is only the message "load: package25.Applet25 can't be
instantiated".
JDev hasn't put the class "sun\awt\AppContext.class" into the
jar-archive, but according to the output of the java console
window (below), I think "sun\awt\AppContext.class" is necessary,
isn't it?
I spent hours in finding "sun\awt\AppContext.class" in the
archives of Jdev, but I couldn't find it anyway.
Is there a bug or can somebody help?
Thanks,
Josef
output of the java console window :
======================================
warning: running 1.2 version of SwingUtilities
com.ms.security.SecurityExceptionEx
[javax/swing/SwingUtilities.appContextGet]: java.io.IOException:
bad path: D:\Programme\Oracle\JDeveloper 2.0
\myclasses\pack25test\sun\awt\AppContext.class
at com/ms/security/permissions/FileIOPermission.check
at com/ms/security/PolicyEngine.deepCheck
at com/ms/security/PolicyEngine.checkPermission
at com/ms/security/StandardSecurityManager.chk
at com/ms/security/StandardSecurityManager.checkRead
at java/io/File.isDirectory
at sun/net/www/protocol/file/FileURLConnection.connect
at
sun/net/www/protocol/file/FileURLConnection.getInputStream
at com/ms/vm/loader/ResourceLoader.getURLData
at
com/ms/vm/loader/ResourceLoader.getCodebaseRelativeData
at com/ms/vm/loader/ResourceLoader.getClassData
at com/ms/vm/loader/URLClassLoader.findClass
at com/ms/vm/loader/URLClassLoader.loadClass
at java/lang/ClassLoader.loadClassInternal
at javax/swing/SwingUtilities.appContextGet
at javax/swing/TimerQueue.sharedInstance
at javax/swing/JApplet.<init>
at package25/Applet25.<init>
at com/ms/applet/BrowserAppletFrame.newInstance
at com/ms/applet/AppletPanel.processSentEvent
at com/ms/applet/AppletPanel.processSentEvent
at com/ms/applet/AppletPanel.run
at java/lang/Thread.run
java.lang.InstantiationException: package25/Applet25
at com/ms/applet/BrowserAppletFrame.newInstance
at com/ms/applet/AppletPanel.processSentEvent
at com/ms/applet/AppletPanel.processSentEvent
at com/ms/applet/AppletPanel.run
at java/lang/Thread.run
nullYou need to convert your html page to invoke the 1.2 Java
Plug-in. See http://java.sun.com/products/plugin/index.html for a
HTML converter. None of the *dep.zip files are needed nor the
rt.jar file.
- PSW
Josef Scheichenzuber (guest) wrote:
: Thanks, the amount of error messages in Java console window of
: my browser has reduced!
: But 2 problems furthermore:
: 1. The archiv "JDeveloper 2.0\lib\jdk12-rt-dep.zip" is
: nonexistent on my PC (problem?)
: 2. I can't see the applet in browser.
: Have you a new idea seeing the following 3 outputs, please?!
: Josef.
: New output of Java console window of my browser
: (InternetExplorer 5.00.2314):
: ==============================================
: Microsoft (R) VM for Java, 5.0 Release 5.0.0.3167
: warning: running 1.2 version of SwingUtilities
: java.lang.InstantiationException: package25/Applet25
: at com/ms/applet/BrowserAppletFrame.newInstance
: at com/ms/applet/AppletPanel.processSentEvent
: at com/ms/applet/AppletPanel.processSentEvent
: at com/ms/applet/AppletPanel.run
: at java/lang/Thread.run
: output of console window of JDev (JDK1.2)was:
: ==============================================
: D:\Programme\Oracle\JDeveloper 2.0\java1.2\bin\AppletViewer.exe
: J-Xbootclasspath/a:"
: D:\Programme\Oracle\JDeveloper 2.0\myclasses;
: D:\Programme\Oracle\JDeveloper 2.0\myclasses;
: D:\Programme\Oracle\JDeveloper 2.0\java1.2\jre\lib\rt.jar;
: D:\Programme\Oracle\JDeveloper 2.0\lib\jdk12-rt-dep.zip;
: D:\Programme\Oracle\JDeveloper 2.0\lib\jdev-rt.zip;
: D:\Programme\Oracle\JDeveloper 2.0\lib\jbcl2.0.zip;
: D:\Programme\Oracle\JDeveloper 2.0\lib\jgl3.1.0.jar;
: D:\Programme\Oracle\JDeveloper 2.0\sqlj\lib\runtime.zip;
: D:\Programme\Oracle\JDeveloper 2.0\jdbc\lib\oracle8.1.5
: \classes111.zip;
: D:\Programme\Oracle\JDeveloper 2.0\jdbc\lib\oracle8.1.5
: \classes111-dep.zip;
: D:\Programme\Oracle\JDeveloper 2.0\lib\connectionmanager.zip;
: D:\Programme\Oracle\JDeveloper 2.0\lib\dacf.zip;
: D:\Programme\Oracle\JDeveloper 2.0\infobus\lib\infobus.jar;
: D:\Programme\Oracle\JDeveloper 2.0\lib\dacf-dep.zip;
: .\infobus\lib\infobus-dep.zip;
: D:\Programme\Oracle\JDeveloper 2.0\lib\LW_pfjbean.jar;
: D:\Programme\Oracle\JDeveloper 2.0\lib\LW_pfjbean-dep.zip;
: D:\Programme\Oracle\JDeveloper 2.0\lib\jbomt.zip;
: D:\Programme\Oracle\JDeveloper 2.0\lib\jboremote.zip;
: D:\Programme\Oracle\JDeveloper 2.0\lib\javax_ejb.zip;
: D:\Programme\Oracle\JDeveloper 2.0\lib\jndi.jar;
: D:\Programme\Oracle\JDeveloper 2.0\lib\xmlparser.jar;
: D:\Programme\Oracle\JDeveloper 2.0\lib\jbo_dep.zip;
: D:\Programme\Oracle\JDeveloper 2.0\java1.2\jre\lib\rt-dep.zip
: " file:///"D:\Programme\Oracle\JDeveloper 2.0
: \myclasses\package25.Applet25.html"
: I unzipped all the above archives - except jdk12-rt-dep.zip -
in
: the directory, in which the following HTML-file lies:
: =====================================================
: <HTML>
: <HEAD>
: <META HTTP-EQUIV="Content-Type" CONTENT="text/html;
: charset=windows-1252">
: <TITLE>
: HTML Test Page
: </TITLE>
: </HEAD>
: <BODY>
: package25.Applet25 will appear below in a Java enabled
: browser.
: <APPLET
: CODEBASE = "."
: CODE = "package25.Applet25.class"
: NAME = "TestApplet"
: WIDTH = 400
: HEIGHT = 300
: HSPACE = 0
: VSPACE = 0
: ALIGN = middle
: >
: </APPLET>
: </BODY>
: </HTML>
: JDev Team (guest) wrote:
: : Have you included in the applet tag all of the archive files
: that
: : were specified in JDev's console output when the applet was
: : started in JDev?
: : - PSW
: : Josef Scheichenzuber (guest) wrote:
: : : Hello,
: : : I'm trying to deploy an applet since one week, but I have
no
: : : luck. Can anyone help?
: : : Running the applet from JDeveloper works well (accessing
: : : Oracle8i with InfoBus).
: : : I made a jar-archive without excluding any class.
: : : But when I apply the applet (package25.Applet25) in the
: : browser,
: : : there is only the message "load: package25.Applet25 can't
be
: : : instantiated".
: : : JDev hasn't put the class "sun\awt\AppContext.class" into
: the
: : : jar-archive, but according to the output of the java
console
: : : window (below), I think "sun\awt\AppContext.class" is
: : necessary,
: : : isn't it?
: : : I spent hours in finding "sun\awt\AppContext.class" in the
: : : archives of Jdev, but I couldn't find it anyway.
: : : Is there a bug or can somebody help?
: : : Thanks,
: : : Josef
: : : output of the java console window :
: : : ======================================
: : : warning: running 1.2 version of SwingUtilities
: : : com.ms.security.SecurityExceptionEx
: : : [javax/swing/SwingUtilities.appContextGet]:
: : java.io.IOException:
: : : bad path: D:\Programme\Oracle\JDeveloper 2.0
: : : \myclasses\pack25test\sun\awt\AppContext.class
: : : at com/ms/security/permissions/FileIOPermission.check
: : : at com/ms/security/PolicyEngine.deepCheck
: : : at com/ms/security/PolicyEngine.checkPermission
: : : at com/ms/security/StandardSecurityManager.chk
: : : at com/ms/security/StandardSecurityManager.checkRead
: : : at java/io/File.isDirectory
: : : at sun/net/www/protocol/file/FileURLConnection.connect
: : : at
: : : sun/net/www/protocol/file/FileURLConnection.getInputStream
: : : at com/ms/vm/loader/ResourceLoader.getURLData
: : : at
: : : com/ms/vm/loader/ResourceLoader.getCodebaseRelativeData
: : : at com/ms/vm/loader/ResourceLoader.getClassData
: : : at com/ms/vm/loader/URLClassLoader.findClass
: : : at com/ms/vm/loader/URLClassLoader.loadClass
: : : at java/lang/ClassLoader.loadClassInternal
: : : at javax/swing/SwingUtilities.appContextGet
: : : at javax/swing/TimerQueue.sharedInstance
: : : at javax/swing/JApplet.<init>
: : : at package25/Applet25.<init>
: : : at com/ms/applet/BrowserAppletFrame.newInstance
: : : at com/ms/applet/AppletPanel.processSentEvent
: : : at com/ms/applet/AppletPanel.processSentEvent
: : : at com/ms/applet/AppletPanel.run
: : : at java/lang/Thread.run
: : : java.lang.InstantiationException: package25/Applet25
: : : at com/ms/applet/BrowserAppletFrame.newInstance
: : : at com/ms/applet/AppletPanel.processSentEvent
: : : at com/ms/applet/AppletPanel.processSentEvent
: : : at com/ms/applet/AppletPanel.run
: : : at java/lang/Thread.run
null -
Abstract Class can't be instantiated
Hi I'm getting the following error messages while compiling. Does any one have any idea how to get RID of it?
ERROR MESSAGES:
EditableHeaderTableExample2.java:48: inner class EditableHeaderTableExample2. MyComboRenderer is an abstract class. It can't be instantiated.
MyComboRenderer renderer = new MyComboRenderer(items);
^
EditableHeaderTableExample2.java:79: Method redefined with different return type: javax.swing.table.TableCellRenderer getTableCellRendererComponent(javax.swing.JTable, java.lang.Object, boolean, boolean, int, int) was java.awt.Component getTableCellRendererComponent(javax.swing.JTable, java.lang.Object, boolean, boolean, int, int)
public TableCellRenderer getTableCellRendererComponent(
^
2 errors
Here is the code:
EditableHeaderTableExample2.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;
import javax.swing.JComponent;
import javax.swing.JComboBox;
import java.util.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.border.*;
import javax.swing.JTable;
import javax.swing.plaf.metal.*;
import javax.swing.JFrame;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;
import javax.swing.DefaultCellEditor;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.DefaultTableCellRenderer;
public class EditableHeaderTableExample2 extends JFrame {
public static void main(String[] args) {
EditableHeaderTableExample2 frame = new EditableHeaderTableExample2();
frame.setSize(400,300);
frame.setLocation(100,100);
frame.setVisible(true);
public EditableHeaderTableExample2(){
JTable table = new JTable(10,10);
TableColumnModel columnModel = table.getColumnModel();
table.setTableHeader(new EditableHeader(columnModel));
String[] items = {"Dog","Cat"};
JComboBox combo = new JComboBox();
for (int i=0;i<items.length;i++) {
combo.addItem(items);
MyComboRenderer renderer = new MyComboRenderer(items);
EditableHeaderTableColumn col;
// column 1
col = (EditableHeaderTableColumn)table.getColumnModel().getColumn(1);
col.setHeaderValue(combo.getItemAt(0));
col.setHeaderRenderer(renderer);
col.setHeaderEditor(new DefaultCellEditor(combo));
// column 3
col = (EditableHeaderTableColumn)table.getColumnModel().getColumn(3);
col.setHeaderValue(combo.getItemAt(0));
//col.setHeaderRenderer(renderer);
col.setHeaderEditor(new DefaultCellEditor(combo));
JScrollPane pane = new JScrollPane(table);
getContentPane().add(pane);
class MyComboRenderer extends JComboBox implements TableCellRenderer
MyComboRenderer(String[] items) {
for (int i=0;i<items.length;i++) {
addItem(items[i]);
public TableCellRenderer getTableCellRendererComponent(
JTable table, Object value,
boolean isSelected, boolean hasFocus,
int row, int column) {
setSelectedItem(value);
return this;This is not a suggestion, it's a requirement. When you say
class MyComboRenderer extends JComboBox implements TableCellRendererthe "implements TableCellRenderer" part is a promise that your class will include a method whose signature is
Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus,
int row, int column); -
Applet can get arbitrary objects as a param tag?
I wonder if I can get an ViewObject(which is in Info table ) as a value of value
attribute in applet tag. I mean an object in the infotable of jsp containing the
applet can be a value of value attribute in applet tag.
I have this question, since I should give a viewobject to applet when I push
submit button in jsp containing the applet.
Help! please~Hi Sam,
Instead of point 1, can you try poin 2 to see.
1.
<jsp:include page="test2.jsp" flush="true">
<jsp:param name="fname" value="FirstName"/>
<jsp:param name="lname" value="LastName"/>
<jsp:param name="age" value="11"/>
</jsp:include>
2.
<jsp:include page="test2.jsp?fname=FirstName&lname=LastName&age=11" flush="true"/>
3. test2.jsp
<%=request.getParameter("fname")%>
<%=request.getParameter("lname")%>
<%=request.getParameter("age")%>
-- Paul
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