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Index ‹ java-programmer
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- 1
- Hiding table columns?Hi,
I'm no professional programmer, but I suppose I know enough about the
Table API to do most of the things I need. Now I'm trying to figure
out a good way to implement a functionality into my apps to toggle the
visibility of table columns.
I wonder if anyone here can provide some tips on how to handle this as
the TableColumn class doesn't seem to provide a setVisible() method.
All my tables use a TableModel, so I suspect that's where I need to do
most of the stuff. I'm thinking of setting up some kind of
two-dimensional array to hold the column names, and a visibility flag
for each column. In the TableModel methods I could then use that flag
to determine what columns and data should be processed.
Any help is much appreciated.
--
Luc Van Bogaert
- 1
- Eclipse Plug-insI have installed Eclipse 2.0.2. In working through the tutorial I came
upon "Creating Your First Java Project." Step #5 says this:
Click the Browse button next to the Zip file field and browse to
select
<workbenchRoot>/plugins/org.eclipse.jdt.ui.examples.projects/archive/junit/junit37src.jar.
Note: This step assumes that the JDT example plug-ins have been
downloaded and installed.
The closest thing within the IDE is this:
<workbenchRoot>/plugins/org.eclipse.jdt.ui
I have looked all through the Eclipse website. I have found several
plug-ins but not this set. Can anybody point me in the right
direction?
Bob
- 2
- Anonymous inner Classes accessing final variables?Hi
When a write an inner class inside a method , it can access the
variables in the enclosing method if and only if they are final ...
Why is the compiler enforcing this ??
What might be the reason for java doing this ?? Is it that these Local
Variables will be cached for Inner class usage ??
Thanks a lot in advance!
- 3
- JDK 1.5.0_05 won't load applets from the Internet?I'm setting up a new PC with a brand-new installation of Windows XP and
Fedora Core 3 (each with all the latest updates).
I'm having trouble with the Java plug-in: it won't load any applets
from the Internet (from the local filesystem works fine). I'm behind a
SOCKS v4 proxy; the browsers and DNS are configures appropriately and
surfing the net works fine, using Mozilla and IE under Windows and
using Mozilla under Linux -- but trying to load a page with an applet
just displays the pretty coffee mug image where the applet should be,
and when I try to leave the page, the browser hangs, presumably because
the JVM is stuck trying to download the applet.
I tried reconfiguring the gateway to use plain NAT, so I could take the
proxy out of the picture, but this did not fix things.
I never had problems like these with JDK 1.4.2.*, but with 1.5.0_05, I
just can't get it to work at all. Web Start doesn't work either -- just
sits there "checking for latest version" indefinitely.
I have Java configured to use the browser's settings; configuring the
proxy settings manually makes no difference. (Of course when I use NAT
on the gateway, there is no proxy involved at all, but that does not
work either.)
N.B. The applets themselves do not appear to be the problem -- I tried
some really simple ones, including samples from the Java Tutorial;
nothing even gets pulled across the network.
I'm hoping someone can shed some light on this -- I'm stumped!
Thanks,
- Thomas
- 6
- Instant dragging from JTreeHi NG,
I cannot drag an unselected element of a JTree. First I have to select
it, then I can drag it. Is there a way to implement that? I think I can
spare that extra click.
Best regards, Christoph
- 7
- operator precedance: new MyClass.method()Hi,
According to the operator precedence table, the dot operator has a higher
precedence than the 'new' operator:
http://java.sun.com/docs/books/tutorial/java/nutsandbolts/expressions.html
Therefore when I write
new myClass.method()
it should, according to this table, be parsed as
new (myClass.method())
which is nonsensical and doesn't compile.
It seems to be parsed as this instead:
(new myClass).method()
Is there an explanation?
****
sample code:
****
public class C {
public int i = 0;
public C(int i) {
this.i = i;
}
public int getI() {
return i;
}
public static void main(String args[]){
System.out.println(new C(20).getI());
// is parsed as:
//System.out.println( (new C(20)).getI() ); ==> ok
// but according to precedance table should be parsed as:
//System.out.println( new (C(20).getI()) ); ==> wrong
}
}
--
Rob
- 7
- Please Please Help!!WocBSe1QFHLRlEH2Ki+Gl8DIjHmu9wcQ
Hi all,
Dont know if this is the right place to submit questions. but i need
help :(
I need to convert this pl/sql function to java function so that i can
use it my jsp page.
FUNCTION countItem(adminUser IN STRING,
m_menu IN NUMBER)
RETURN NUMBER IS
cno NUMBER := 0;
CURSOR cAdminMenu(adminUser VARCHAR2 ) IS
SELECT M.menuid,G.pageid,M.description,G.name,G.url
FROM useraccess P, pages G, menues M, submenues T
WHERE P.userid = adminUser
AND T.menuid = M.menuid
AND T.pageid = G.pageid
AND P.pageid=G.pageid
AND G.publicaccess = 'N'
UNION
SELECT M.menuid,G.pageid,M.description,G.name,G.url
FROM groupaccess P, pages G, menues M, submenues T
WHERE P.grpid IN (SELECT GRP_ID FROM GROUPUSERS WHERE USR_ID =
adminUser)
AND T.menuid = M.menuid
AND T.pageid = G.pageid
AND P.pageid=G.pageid
AND G.publicaccess = 'N'
UNION
SELECT M.menuid,G.pageid,M.description,G.name,G.url
FROM pages G, menues M, submenues T
WHERE T.menuid = M.menuid
AND T.pageid = G.pageid
AND G.publicaccess = 'Y'
ORDER BY 1,2;
BEGIN
FOR t IN cAdminMenu(adminUser) LOOP
IF t.menuid = m_menu THEN
cno := cno + 1;
END IF;
END LOOP;
RETURN cno;
END;
I would really appreciate your help.
Regards,
Ayeda
- 7
- ANNOUNCE: Ice 2.0 releasedHi,
we've just released Ice 2.0 with quite a lot of new features:
- new language mappings for Visual Basic and Python
- a new light-weight and super-efficient firewall
- a streaming API that allows you to control the encoding and decoding of
objects in arbitrary formats (or the native Ice format)
- dynamic invocation and dispatch interfaces, so you can write generic
clients and server that do not require compile-time type knowledge
- new chapters in the documentation for the new features
- numerous other improvements and bug fixes
See http://www.zeroc.com/vbulletin/showthread.php?s=&threadid=987
for more info.
Cheers,
Michi.
- 14
- JNI: Accessing value in an arrayI have a code::
jobject headerVal;
//jsize size = 0;
jclass objClass;
jmethodID mid = NULL;
void * headval;
do
{
/* after this call, headval will contain a pointer to an array.and
HeadID will contain an int value.*/
GetValue( headval,headdID);
if(headval)
{
objClass = (*env)->FindClassenv, "Ljava/lang/Object;");
if(objClass == NULL)
{
break;
}
mid = (*env)->GetMethodID(env, objClass, "<init>", "(J)V");
if(mid == NULL)
{
break;
}
if(headID>0x30 || headID < 0x3F)
{
headerVal = (*env)->NewObject(env, objClass, mid,(jstring)headval);
}
else if(headerID>0x70 || headerID < 0x7F)
{
headerVal = (*env)->NewObject(env, objClass, mid,(jbyteArray)headval);
}
else if(headerID>0xB0 || headerID < 0xBF)
{
headerVal = (*env)->NewObject(env, objClass, mid,
(jbyte)headval);
}
else if(headerID>0xF0 || headerID < 0xFF)
{
headerVal = (*env)->NewObject(env, objClass, mid,
(jlong )headval);
}
}
}while(FALSE);
return headerVal;
}
I know it is not the correct way to assign headerVal. how can i assign
the value contained in array pointed by headval???
I am a beginner in c and dont know much abt pointers...
please do help me...
- 14
- 14
- weird exception during start of applet... (J2SE5)Hi,
does somebody have an idea what the exception:
java.lang.NoClassDefFoundError: IllegalName: <!DOCTYPE HTML PUBLIC
"-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
at java.lang.ClassLoader.preDefineClass(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
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 org.xml.sax.helpers.NewInstance.newInstance(Unknown Source)
at org.xml.sax.helpers.XMLReaderFactory.loadClass(Unknown
Source)
at org.xml.sax.helpers.XMLReaderFactory.createXMLReader(Unknown
Source)
at Graph.init(Graph.java:465)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
mean?
The weird thing is, i have two pages on the first one i get this
exception
and on the other one, the applet work.
Check it out
not working -> http://www.stephan-zehrer.de/LiveGraph
working -> http://www.stephan-zehrer.de/html/graph/
They both uses the same jar file.
What's wrong?
thx
Steve
- 14
- Eclipse Javadoc Auto-Formatting: HTML Tags Trailing Spacecomp.lang.java.softwaretools -
I've been using Eclipse for a few years and am currently using 3.1. I've
noticed that whenever I include an anchor (<a>) tag in my Javadoc, the code
formatter always adds a trailing space before the closing tag. E.g.
Before: Go <a href="http://www.google.com">here</a>.
After: Go <a href="http://www.google.com">here </a>.
It doesn't happen with the <code> tag, and I'm hoping that it's configurable
somewhere. It's doesn't appear to be an option in the main Code Formatter
interface.
Thanks,
Josh
--
Josh
- 14
- Protected inner classes and inheritanceApologies if I am missing something obvious, but here's the situation. I have
a top-level class with a protected inner class. I have a second-level class
in a different package that extends the top-level class. For example:
package somePackage;
public class TopLevel
{
protected class Inner
{
protected int intField = 0;
protected Inner()
{
// constructor
}
protected void innerMethod()
{
return;
}
}
}
package somePackage.otherPackage;
import somePackage.TopLevel;
import somePackage.TopLevel.Inner;
public class SecondLevel extends TopLevel
{
public SecondLevel()
{
// constructor
}
public void someMethod()
{
Inner inner = new Inner();
inner.intField = 1;
inner.innerMethod();
}
}
When I compile the second class, I get at least 4 errors:
The type somePackage.TopLevel.Inner is not visible
The constructor TopLevel.Inner() is not visible
The field TopLevel.Inner.intField is not visible
The method innerMethod() from the type TopLevel.Inner is not visible
I thought I read the Java docuementation clearly when is says
"The protected modifier specifies that the member can only be accessed within
its own package (as with package-private) and, in addition, by a subclass of
its class in another package."
and
"You can use the same modifiers for inner classes that you use for other
members of the outer class. For example, you can use the access specifiers --
private, public, and protected -- to restrict access to inner classes, just as
you do to other class members."
If I simply make TopLevel.Inner a public class, the errors go away. But I
don't really want to do that... Anything obvious??
thanks
scott
- 14
- thread status jdk 1.3How can I know thread status with jdk 1.3?
It doesn't have thread.getStatus().
How can I do?
Thanks
Palmis
- 15
- type Map does not take parameters ?Hi all,
I got a strange error message from the java 1.5.0 compiler:
"type Map does not take parameters" which Map certainly does.
The complete code was this mini class:
import java.util.*;
class AAA {
public static void main(String[] args) {
Map<Integer, String> map = new HashMap<Integer,String>();
System.out.println(map);
}
}
NB, it does not compile with the original compiler, but compiles happily
within an Eclipse 3.1 environment.
And it does also compile with the original compiler when I change the
reference type from Map to HashMap.
How can this be?
Yours,
Bu.
|
| Author |
Message |
Marcin Goç «yn
|
 Posted: 2005-7-21 19:07:00 |
Top |
java-programmer, struts html:checkbox
Hello
I have a following problem. I want to have both checked in unchecked
checkboxes on my jsp according to values i give them but i dont know how to
force chceckbox that it will be chcecked. I read somewhere that it
corresponds with ActionForm. But how can i set it up before that affect this
checkbox later in form?? I should put it in session ?it doesnt work. when
form is displayed i thought that always a new ActionForm bean is created. So
when can i change values in this bean?? Please help
Marcin Goldyn
|
| |
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| |
|
richardsosborn@gmail.com
|
| Posted: 2005-8-18 3:08:00 |
Top |
java-programmer >> struts html:checkbox
you might want to check on JGuru.com. their forums found a bug with
this. there is a workaround.
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Index ‹ java-programmer |
- Next
- 1
- Questions for the Smalltalkers and the Javaists (?)In article <email***@***.com> (Mon, 31 May 2004
20:49:51 +0000), Roedy Green wrote:
> On Mon, 31 May 2004 16:28:13 -0400, James A. Robertson
> <email***@***.com> wrote or quoted :
>
>>>> Java has some significant advantages, but programming is unlikely
>>>> to be one of them.
>>>
>>>Troll.
>>
>>Meaning, you had no actual rebuttal to anything he said.
>
> You could look on at as a challenge to demonstrate the
> alleged troll's sincerity.
The troll's not very sincere. Unfortunately, my statement was quoted out
of context.
I don't mean to say that Java is a bad language and it's certainly proven
itself to be useful; it has considerable support in the industry, by far
its biggest benefit.
What does Smalltalk have that "Java" doesn't -- with the possible
exception of IBM's late VisualAge for Java? An integrated environment,
where the editor, compiler, class browser, debugger, process manager, et
al., all run together.
Some disclaimers:
* The benefit of the fully-integrated environment is perhaps not obvious
without having used it. I liked (but not loved) the VB6 environment
until I tried Eclipse. I really liked (but not loved) Eclipse until
I tried Smalltalk.
* Until October, I was fully convinced of the necessity for static type
checking. Since then, I've learned Python and Smalltalk, often finding
now that dynamic typing allows considerable freedom, conciseness and
expressiveness in programming.
What's wrong with Java?
* A large, complicated grammar. Python has a cleaner syntax, and
Smalltalk's is sufficiently simple it never gets in the way.
* Static type checking with a compiler that allows certain Array
operations to succeed but which can be shown, statically, to
cause type exceptions at runtime.
- 2
- How do u return a new object; an exact copy of the object which it is called?Hello All,
I was wondering, How do u return an exact copy of an object (Plate)
which it is called upon.
IE.
In the Main:
Plate p = new Plate();
Plate p2 = p.getCopy();
In the Class:
public Plate getCopy() {
???
}
What do i do for..???
i know ur prolly saying u can just go Plate p2 = p1, but I have my
reasons :P
Thanks
Jazz
- 3
- Open source JVM that supports JazelleIs there any open-source JVM available that supports ARM processors
with Jazelle extensions? If not, does anyone know of a closed-source
JVM for Jazelle-enabled ARM processors running under linux that can be
obtained by a lone researcher (I do not work for Nokia, etc)?
I have examined numerous open-source JVMs (Kaffe, gcj, etc.) and have
not seen any evidence of their using Jazelle, and in the Sun
documentation for the CDLC, I have seen references to linux_jazelle.c,
but have not been able to track down the actual code.
Perhaps the Jazelle extensions are a secret? If so, anyone interested
in doing some reverse-engineering?
Thanks in advance, Hobi
- 4
- ClassNotFoundException: oracle.jdbc.driver.OracleDriverHi.
I try play a little bit with a oracle, tomcat, apache. I setup apache,
tomcat, and the oracle 10g. Now I try login to my database by website using
jsp files.
Base on website : http://elab.bus.umich.edu/how-to-oracle-jsp.php
I made the page to pull up some records - just to see if this works.
When I point in the webbrowser to this file i receive error:
ClassNotFoundException: oracle.jdbc.driver.OracleDriver
When I am login on that server I can use sqlplus.
What could be problem?
I use a debian system with oracle10g, tomcat 5.5.9 and jdk1.5.
Please point me to some useful documents, examples.
Thanks for help.
Mariusz
Here is a code what I used:
<%@ page import="java.sql.*" %>
<HTML>
<HEAD><TITLE>Simple Oracle Example</TITLE></HEAD>
<BODY BGCOLOR="#FFFFFF">
<CENTER>
<B>Employees</B>
<BR><BR>
<%
Connection conn = null;
try
{
Class.forName("oracle.jdbc.driver.OracleDriver");
conn = DriverManager.getConnection(
"jdbc:oracle:thin:@192.168.1.20:1521:orcl",
"orauser",
"2005or");
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("SELECT * FROM NMS_DATA");
//Print start of table and column headers
out.println("<TABLE CELLSPACING=\"0\" CELLPADDING=\"3\"
BORDER=\"1\">");
out.println("<TR><TH>ID</TH><TH>NAME</TH></TR>");
//Loop through results of query.
while(rs.next())
{
out.println("<TR>");
out.println("<TD>" + rs.getString("EmpID") + "</TD>");
out.println("<TD>" + rs.getString("Name") + "</TD>");
out.println("</TR>");
}
out.println("</TABLE>");
}
catch(SQLException e)
{
out.println("SQLException: " + e.getMessage() + "<BR>");
while((e = e.getNextException()) != null)
out.println(e.getMessage() + "<BR>");
}
catch(ClassNotFoundException e)
{
out.println("ClassNotFoundException: " + e.getMessage() + "<BR>");
}
finally
{
//Clean up resources, close the connection.
if(conn != null)
{
try
{
conn.close();
}
catch (Exception ignored) {}
}
}
%>
</CENTER>
</BODY>
</HTML>
- 5
- Caller IDs connected to my modemHi,
I have a Swing application (running on PC1) that uses a modem.
External systems can dial-in a specified phone number and my
application processes the request.
With this, how do I know the caller ID connected to PC1?
Thanks for your help.
- 6
- public key encryption javax.cryptoMy primary eperience with crypto is using PGP, but now I'd like to use
crypto in a Java application. I've been wading therough the javadocs
for the "javax.crypto" package, and I'm having a hard time finding any
straightforward way to just perform basic public key encryption like
PGP does. I've found references to ElGamal and Diffie-Hellman
algorithms, but they seem to be all about "key agreements", not
encryption.
Is there anything in javax.crypto that will just let me generate key
pairs and then perform encryptions to public keys and decryptions from
private keys?
- 7
- Converting String<->byte[] -- No Data Loss?If I have a byte[] and I convert it to string (String sData = new
String(byte[] bData), then convert it back (byte bData = sData.getBytes()),
will all data be intact, or do Strings have problems with bytes that are
not printable characters? I've tested this and it seems to work fine, but
I want to make sure there isn't some condition or situation I'm not aware
of that could cause problems.
I'm doing this because it's easier to do some of my work with strings, so
I'm reading a Zip file, saving each entry as a String, modifying some, then
saving it as a new Zip. I've found with Zip files, you can't always be
sure of how much data you'll be able to read in, so I'm reading in data in
blocks upto 2k, then taking each block and converting it to a String, so I
can concatenate the amount read in onto the end of another string. (With
Strings, I can use sString.substring(), I can't find a way to concatenate
byte[] arrays without continually creating a new array and using
System.arrayCopy().)
Thanks for any info.
Hal
- 8
- JTree display update issue with new nodesI have a problem with the following code. The code is supposed to create a
new node and add it as a child to another node in a JTree. This is indeed
happening but the tree is only updating the display and selecting the new
node the first time a node is added. For each subsequent child node, it
appears as though the child node is added successfully but it is just not
appearing in the tree. If I check getChildCount() on the parent node after
each child is added it reveals the correct number so it seems to be a
display issue. Could someone please point out the mistake in the following
code?
This code exists in a control class (not in the JTree itself). The variable
parentNode is a DefaultMutableTreeNode passed in as a parameter:
DefaultMutableTreeNode childNode = new DefaultMutableTreeNode();
parentNode.add(childNode);
tree.setSelectionPath(new TreePath(childNode.getPath()));
MyTreeModel model = (MyTreeModel)tree.getModel();
model.nodesWereInserted(parentNode, new int[] {parentNode.getChildCount() -
1});
tree.repaint();
This is the tree model:
public class MyTreeModel extends DefaultTreeModel
{
private DefaultMutableTreeNode root;
private ArrayList<TreeModelListener> listeners = new
ArrayList<TreeModelListener>();
public MyTreeModel(DefaultMutableTreeNode root)
{
super(root);
this.root = root;
}
public void addTreeModelListener(TreeModelListener l)
{
listeners.add(l);
}
public Object getChild(Object parent, int index)
{
return ((DefaultMutableTreeNode)parent).getChildAt(index);
}
public int getChildCount(Object parent)
{
return ((DefaultMutableTreeNode)parent).getChildCount();
}
public int getIndexOfChild(Object parent, Object child)
{
return
((DefaultMutableTreeNode)parent).getIndex((DefaultMutableTreeNode)child);
}
public Object getRoot()
{
return root;
}
public boolean isLeaf(Object node)
{
return ((DefaultMutableTreeNode)node).isLeaf();
}
public void removeTreeModelListener(TreeModelListener l)
{
listeners.remove(l);
}
public void valueForPathChanged(TreePath path, Object newValue)
{
}
}
--
And loving it,
qu0ll
______________________________________________
email***@***.com
(Replace the "SixFour" with numbers to email)
- 9
- 10
- [Swing-JButton] Images are not displayed from g.drawImage( )I expect from the following program to show a JButton and
an another button of (my) class JImageButton where the states
'normal' and 'pressed' are taken from two PNGs (download from
http://www.geocities.com/theodosisx/2buttons.zip)
in directory C:\images.
I override the paintComponent() method to show the images and for test
reasons i draw also a line.
The problem is, the images are not displayed. Can anyone help me?
The source follows:
import java.awt.image.*;
import java.awt.*;
import javax.imageio.*;
import javax.swing.*;
import java.net.URL;
import java.io.*;
import java.net.*;
class JImageButton extends JButton
{
public Image Im_normal, Im_pressed;
JImageButton ( )
{
Dimension size = getPreferredSize();
size.width = 115;
size.height = 75;
setPreferredSize(size);
Im_normal = Toolkit.getDefaultToolkit().getImage("C:/images/button_normal.png");
Im_pressed = Toolkit.getDefaultToolkit().getImage("C:/images/button_pressed.png");
setOpaque(false);
setFocusPainted(false);
setContentAreaFilled(false);
}
protected void paintComponent( Graphics g)
{
g.drawLine(0,0,20,20);
g.drawImage( Im_normal, 0,0,this);
if ( getModel().isArmed())
g.drawImage( Im_pressed,0,0,this);
else
g.drawImage( Im_normal, 0,0,this);
}
}
public class TestFrame extends JFrame
{
JPanel pane;
JButton A_Normal_Button;
JButton My_JImage_Button;
TestFrame( )
{
pane = (JPanel) this.getContentPane();
pane.setLayout(null);
A_Normal_Button = new JButton ( );
My_JImage_Button = new JImageButton( );
A_Normal_Button.setBounds (new Rectangle(10, 10,80,50));
My_JImage_Button.setBounds(new Rectangle(10,100,115,75));
pane.add(A_Normal_Button);
pane.add(My_JImage_Button);
this.setSize (800,600);
this.setVisible(true);
}
public static void main(String[] args)
{
new TestFrame();
}
}
- 11
- refactoringPatricia Shanahan <email***@***.com> writes:
> Roedy Green wrote:
>> I have always felt that a if a method can have multiple inputs it
>> should be able to have multiple outputs, but very few language
>> designers (Forth and PostScript being exceptions) have agreed.
>
> Matlab is another exception.
As is Common Lisp.
Regards,
Patrick
------------------------------------------------------------------------
S P Engineering, Inc. | Large scale, mission-critical, distributed OO
| systems design and implementation.
email***@***.com | (C++, Java, Common Lisp, Jini, middleware, SOA)
- 12
- interface & abstract class variablesWhile writing abstract class do you define any variables?
My question is: Why you do that? it doesn't make sense to me becouse
you can't make instance of abstract class..
I understand why to make non-abstract method in abstract class, but
this story with variables...as I said doesn't make sense (most probably I'm
wrong)
With interface as (100% abstract class) defining variable is even worse...
am I missing something? ;-)
THX
- 13
- How best to keep code and gui separated but harmoniousHello,
I am wishing to create an image model class and will need some way to
display images.
I know that JFrame, JPanel and Canvas support displaying images and are
ideal candidates.
Rather than put all the code for image related functionality in one of
these components, I want to be able to create an image model class
separately taking one of these components or even a subclass of these
components but only this range of components and perform operations on
it I guess like an MVC but only two classes not three.
So as an example I have JFrame but do not want to display the image
directly on it but instead want to use a JPanel or a Canvas inside a
scroll pane and have my image model class perform the operations on the
JPanel or Canvas or subclass of.
So I know that the image model class would take a reference to the
JPanel, Canvas or a subclass of these but nothing else and the JFrame
would have a reference to the image model class.
Selecting menu or button items from the JFrame would invoke a command,
passed to the image model class which would execute the command and
apply changes to the JPanel, Canvas or subclass of one of these.
How would I even start I have read information on Generics and
Interfaces and can see either of these could be used but not sure where
to start.
I am not trying to create a photoshop clone :) but want basics like zoom
in out and area, rotate and flip. In time I will probably add new image
related functionality, but don't want to be tied to a JPanel or a Canvas
or anything, especially if a new component appears in the future which
maybe better suited?
I hope someone can understand what I am trying to achieve here I sort of
do but it is still a bit hazy and vague and not sure where to start or
how to start.
Thanks
Rich
- 14
- java/44922: JVM crashSynopsis: JVM crash
State-Changed-From-To: open->feedback
State-Changed-By: glewis
State-Changed-When: Thu Apr 1 17:07:01 PST 2004
State-Changed-Why:
The submitter has been asked for feedback.
Responsible-Changed-From-To: freebsd-java->glewis
Responsible-Changed-By: glewis
Responsible-Changed-When: Thu Apr 1 17:07:01 PST 2004
Responsible-Changed-Why:
Over to maintainer.
http://www.freebsd.org/cgi/query-pr.cgi?pr=44922
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- 15
- Prim aesperienza di striptease e poi sesso anale trovi quiGene
Video con figa amatoraile, che prova piacere dal cazzo grandissimo, che fa male prima volta.
http://www.geocities.com/pawof67332
+++++-----+++++-----+++++-----
Video con prim aesperienza delle ragazze giovane di fare pompini.
appeared to know just where we were going, sniffing at intervals andlatter provided us with a road of sorts. The fisherman had been armed
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