| How to disable automatic scrolling of JScrollPane / JTextPane (Swing) |
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- "package own.examples": necessary for NetBeans?Hello together
I am learning java and for my beginning, I just used a simple editor to
write the example codes. Now I wanna try NetBeans, but unfortunately all my
codes aren't working! I found out, that NetBeans need at the beginning of
the source file: "package own.examples" (i.e. where the source is stored).
Of course none of the sources I've written contains this add-on (because I
didn't need it). So they don't work with NetBeans. Why? If I am adding this
small "sentence" to the source code, I can compile it with NetBeans without
any problems, -> but not any longer with the command prompt (I am using
WinXP Pro at the moment).
What am I doing wrong? Is this sentence really necessary? I am asking,
'cause I want to implement a CMS (maybe JSF or Struts) and therefore I want
to know:
1) if it is better to use Eclipse or jEdit (do they need this extra
sentence, too?),
2) and if I am using an Application Server, it always needs "package
own.examples" or not? (so that maybe it is better not to use NetBeans 'cause
of this "lack")
thanks and cheers
mirco novena
- 1
- Getting the original URL in a custom 404 error page/servlet (Tomcat)Hi!
I'm trying to setup a servlet to handle all request that does not map
to a file on the webserver. I've set up a error-page in web.xml that
points to my servlet. I want my servlet to lookup the requested URL
in a database.
The only problem is that when the servlet is called, I want to get the
original URL requested by the user, not the URL of my 404 servlet.
Does anyone know how to do this?
Thanks in advance for any help!
Anders
- 1
- Java XML Parsing ErrorsHello,
I am new to Java. I need to find two values in XML file, compare them
with other two values and, if match, add to new XML string. Please,
help me with 2 errors:
String new XML = null;
NodeList nodes = document.getElementsByTagName("Car");
for(int i=0; i<nodes.getLength(); i++){
Element e1 = (Element) nodes.item(i);
Element e2 = (Element) nodes.item(i);
String e1val = e1.getNodeValue("Color"); //ERROR: method getNodeValue
not found in org.w3c.dom.Element
String e2val = e2.getAttribute("Type");
if(e1val.equals("Red") && e2val.equals("Sedan")){
newXML = //HOW TO ADD THIS NODE AS STRING?
}
return newXML;
}
THANK YOU!!!
- 3
- 5
- dragging graphics in a JTableI am interested in creating a graphics object (for example, a big dot)
creating it such that it can be moved within a cell and then moved
across cells. I had something working outside of a JTable (using
Point2D) and overiding paintComponent such that the drawing routine
looks like:
public void paintComponent(Graphics g)
{
super.paintComponent(g);
Graphics2D g2d = (Graphics2D)g;
g2d.setComposite(makeComposite(.5f));
}
I have two questions at this point. First, is it feasible? and Second,
if feasible, how would one generally go about it (custom editor, firing
events when it the object gets near a cell border, etc.?)?
hanks - Lou
- 5
- retrieve an output param defined in a stored procedure from java codeHi,
I've made a java application and i use a CallableStatement to call a
stored procedure. I use the method getString() of this class to
retrieve the value of the definded output param but it retuns "" (no
value). The code of the stored procedure is
CREATE procedure pruebaICM
@pANI varchar(20),
@pTABLA varchar(20),
@pInsert varchar(500),
@pUpdate varchar(1000),
@pFLAG varchar(1),
@pResultado VARCHAR(1) OUTPUT
as
begin
DECLARE @ani varchar(20)
declare @cliente int
DECLARE @sentencia nvarchar(1000)
DECLARE @tabla nvarchar(20)
DECLARE @sentencia_where nvarchar(50)
DECLARE @sql nvarchar(1050)
SET NOCOUNT ON
set @tabla = @pTABLA
set @ani = @pANI
SELECT @sql= N'select @cliente=count(ani) from '+ @tabla + N'
where ani = ' + @ani
SELECT @sql
exec sp_executesql @sql, N'@Cliente INT OUTPUT', @Cliente
OUTPUT
SELECT @Cliente
if (@pFLAG = 'A') or (@pFLAG = 'Actualizar') or (@pFLAG = 'I')
begin
if (@cliente = 0)
begin
set @sentencia = N'insert into ' +
@pTABLA + N' (ani) values (' + @pInsert + N')'
select @sentencia
EXEC sp_executesql @sentencia
set @pResultado = 1
SELECT @pResultado
end
if (@cliente = 1)
begin
set @sentencia = N'update ' + @pTABLA +
N' set ' + @pUpdate
set @sentencia_where = N' where ANI =
' + @pANI
set @sql = @sentencia +
@sentencia_where
select @sql
EXEC sp_executesql @sql
set @pResultado = 2
SELECT @pResultado
end
end
else if (@pFLAG = 'B') or (@pFLAG = 'Borrar')
begin
if (@cliente = 0)
begin
set @pResultado = 0
SELECT @pResultado
end
else if (@cliente = 1)
begin
set @sentencia = N'delete from '+
@pTABLA + N' where ANI = ' + @pANI
EXEC sp_executesql @sentencia
set @pResultado = 3
SELECT @pResultado
end
end
end
However, when i call this stored procedure fron a query analyzer
windows it works well, the statements
are executed correctly and i can see that the value of the aoutput
param (@pResultado) changes depends on
the sentence executed (insert, update, delete). Then, why can't i
retrieve this param from my java code?
Thans very much for helping me!!!!!!!!!!!!!
P.D: i'm using jsk1.3.1_04 and sql server 7
- 7
- Creating video with JMFHello
I want to create a video with jmf.
I have a sound file and an image file.
How i can mixed the two files to obtain a video.
Any help or info will be welcome.
Nazha
- 8
- Should I run JAVA or MS VM with Internet Explorer?I installed Java JRE 1.4.2_02 to support Mozilla Firebird while I try it
out.
This plug-in has enabled itself to run with IE6 too. Should I disable it in
IE6? Or should I disable MS VM? Or should I let both run together?
Thank you.
Jim Andrus
- 9
- Managing files using JavaHi! I'm new to Java and I would like to know how to manage files (e.g. rm,
mv, mkdir, etc.) using Java for a simple text-based application on Unix.
It's just an extension of a tutorial question at uni where we have to store
bank customer details to a file. Thank you!
pras
- 10
- JToggleButton dimension on ToolBar?I have added (besides normal buttons with icons (for example "open
folder") JToggleButton buttons with text on them.
I'm not able:
1. to give jtogglebutton buttons the same dimension, that is fitted to
the text;
2. to make that when one is selected, it stays pressed too.
Thanks for every advice.
Regards.
Marcello.
- 15
- Please help for a LinkBinaryTreeInJavaI am new in this group,I don't know how far it would help me.
I tried to make a linked based binary tree following the book "data
structures and algorithms in java" By goodRich and tamassia.I did all
but I wanted to implement a function to determine whether a particular
node exists or not.All I want to implement a function boolean
exists(node n).Can anyone help??My program is as follows:-
import java.io.*;
interface Node {
Object getData();
int getID();
}
class TreeEmptyException extends Exception {
TreeEmptyException(String message) {
super(message);
}
}
class LinkBinTree {
BinNode root;
int size;
LinkBinTree(Object O) {
root = new BinNode(0);
}
class BinNode implements Node {
int id;
BinNode left;
BinNode right;
Object data;
BinNode(int iden) {
id = iden;
left = null;
right = null;
data = null;
}
BinNode(Object O) {
id = 0;
left = null;
right = null;
data = null;
}
public Object getData() {return data;}
public int getID() { return id;}
void addLeft(Object obj) {
BinNode b = new BinNode(obj);
left = b;
}
void addRight(Object obj) {
BinNode r = new BinNode(obj);
right = r;
}
BinNode addLeft(Node n,Object O) throws TreeEmptyException
{
if(!exists(n)) throw new TreeEmptyException("Tree doesn't
exists");
return n.addLeft(O);
}
BinNode addRight(Node n,Object O) throws TreeEmptyException{
if(!exists(n)) throw new TreeEmptyException("Tree doesn't
exists");
return n.addRight(O);
}
void preOrder(Node n) {
LinkQueueApp<Integer> q =new LinkQueueApp<Integer>();
int p=n.getID();
q.enqueue(p);
while(!q.isEmpty()) {
p =q.dequeue();
System.out.println("The pre-order is : "
+n.getData());
for(int i=p;(i==p+1) || (i==p+2)&&i<=size;i++)
q.enqueue(i);
}
}
void boolean exists(Node n) {
if(Node == root) return;
else {
if(Node
- 15
- How to map the table classes have more than one columns for its primary key in Hibernate?I have two existed tables, I am NOT allow to altering those tables
The 1st table (tableA) has one column for its primary key, the 2nd
table (tableB) has tow columns for its primary key. I am try to map
these two tables with Hibernate XML. Here are my XML file.
Please see ????? in tow places.
Question 1
1st ???? is <many-to-many> tag in class TableA, but <many-to-many> tag
only allows one column. How do I map it for two columns?
Question 2
2nd ????? is the <key> tag in class TableB, similar that <key> tag only
allows one column. How do I map it for two columns?
Thank Q very much in advance!
<hibernate-mapping auto-import="false"
default-lazy="true" default-access="field">
<class name="tableA" table="TABLEA" entity-name="TableA.class">
<id name="tableAId" type="string" column="TABLEAID"
access="field">
<generator class="native">
<param name="key">TABLEAID</param>
</generator>
</id>
<property name="column1" type="string" column="COLUMN1" />
<property name="column2" type="string" column="COLUMN2" />
.....
<set name="idsa" table="IDS" inverse="true">
<key column="TABLEAID" />
<many-to-many column="????" class="tableB" />
</set>
</class>
<class name="tablesB" table="TABLEB" entity-name="TableB.class">
<composite-id>
<!-- this table's primary key has two columns -->
<key-property name="tableBId1" type="string"
column="TABLEBID1" />
<key-property name="tableBId2" type="integer"
column="TABLEBID2" />
</composite-id>
<property name="column1" type="string" column="COLUMN1" />
<property name="column2" type="string" column="COLUMN2" />
....
<set name="idsb" table="IDS">
<key column="?????" />
<many-to-many column="TABLEAID" class="tableA" />
</set>
</class>
</hibernate-mapping>
- 16
- ** new open source requirements management tool **Hi,
OSRMT v1.1 has been released free under GPL for design
control/requirements engineering:
- custom forms to enter product features, requirements, use cases, test
cases, design etc.
- arrange all of these 'artifacts' within a hierarchal tree
- create dependencies between artifact e.g. feature a --> requirement b
--> source code c,d,e
- traceability matrix, identify artifacts not traced
- generate a dependency graph showing the impact of changing an
artifact (upward/downward)
- attach binary files or insert links to files or URLs with each
artifact
- customize the reference with artifact type specific priorities,
status, version etc.
- enter low level details to artifacts e.g. use case steps, data
fields, test steps etc.
- track entire history of change to artifact
- environment specific username and hashed password
- database independence - Oracle, MySQL, SQL Server, MS Access scripts
supplied
- configure client to connect to database direct or full blown J2EE
(client connects to JBoss)
- Rich Swing client runs anywhere (web client or run client over HTTP
in the future)
- Import/export artifacts from/to XML
- Technologies used include JGoodies (forms), JGraph (dependency tree),
Jakarta (db connection pooling), Rhino (custom scripting
forms/reports), Jasper (reports)
We welcome your review, comments, questions and requests for new
features.
You can download the latest release at http://www.osrmt.com
thanks!
Aron Smith
Fast, free requirements customized your way!
- 16
- Learning J2ee, got newbie question.Hello. I picked up a Beginner's J2ee book. I'm going through the
examples, but one of the examples I am stuck on. I cannot get past the
error message:
404 - Resource Not found.
I am running Tomcat, I believe 5.5.8. Here's the directory structure
that I have:
webapp/Ch05/
login.html
Login.java
Login.class
Here's the login.html:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Login</title>
</head>
<body>
<h1>Login</h1>
Please enter your username and password.
<form action="/Ch05/Login" method="POST">
<p><input type="text" name="username" length="40">
<p><input type="password" name="password" length="40">
<p><input type="submit" value="Submit">
</form>
</body>
</html>
My browser complains that Login resource is unavailable. Here's
Login.java, which is compiled and in the same directory.
package web;
import java.servlet.http.*;
import java.io.*;
public class Login extends HttpServlet {
public void doPost( HttpServletRequest request, HttpServletResponse
response)
{
String username = request.getParameter( "username");
try {
response.setContentType( "text/html");
PrintWriter writer = response.getWriter();
writer.println( "<html><body>");
writer,println( "Thank you, " + username +
". You are now logged into the system.");
writer.println( "</body></html>");
writer.close();
} catch( Exception e) {
e.printStackTrace();
}
}
}
Anyways, does anyone know what I'm doing wrong here? (I just typed the
example pretty quickly, so there might be typos, but the above compiles
without complaint.) Thanks.
|
| Author |
Message |
|
 Posted: 2005-6-22 3:45:00 |
Top |
java-programmer, How to disable automatic scrolling of JScrollPane / JTextPane (Swing)
Hi,
I want to be able to enable / disable the automatic scrolling performed when
adding text to a JTextPane. A JScrollPane has a viewport set to the
textpane. The text is added within a thread invoked using
SwingUtilities.invokeLater(...). Only the automatic scrolling should be
disabled, the user must still be able to scroll using the scrollbars etc.
and be able to enable the automatic scrolling again. (I'm using
jdk1.5.0_03.)
Here is how some parts my code look like:
...
<init>
...
jTextPane = new JTextPane();
JScrollPane jScrollPane = new JScrollPane();
jScrollPane.setViewportView(textPane);
...
<some-method>
...
StyledDocument styledDocument = (StyledDocument)jTextPane.getDocument();
...
<call addText-method>
...
<addText-method>
...
Runnable r = new Runnable() {
public void run() {
try {
styledDocument.insertString(styledDocument.getLength(), text,
style);
} catch (BadLocationException e) {
e.printStackTrace();
}
}
};
SwingUtilities.invokeLater(r);
...
Every time the <addText-method> is called the JScrollPane scrolls to the end
of the document. How can I enable / disable that automatic scrolling and
still use a thread / invokeLater to add the text?
Greetings,
ODB
|
| |
|
| |
|
margielm
|
| Posted: 2005-6-22 16:03:00 |
Top |
java-programmer >> How to disable automatic scrolling of JScrollPane / JTextPane (Swing)
here is a solution for your problem:
JTexyPane jTextPane1 = new JTextPane();
jTextPane1.setAutoscrolls(false);
ODB wrote:
> Hi,
>
> I want to be able to enable / disable the automatic scrolling performed when
> adding text to a JTextPane. A JScrollPane has a viewport set to the
> textpane. The text is added within a thread invoked using
> SwingUtilities.invokeLater(...). Only the automatic scrolling should be
> disabled, the user must still be able to scroll using the scrollbars etc.
> and be able to enable the automatic scrolling again. (I'm using
> jdk1.5.0_03.)
>
> Here is how some parts my code look like:
>
> ...
> <init>
> ...
> jTextPane = new JTextPane();
> JScrollPane jScrollPane = new JScrollPane();
> jScrollPane.setViewportView(textPane);
> ...
>
>
> <some-method>
> ...
> StyledDocument styledDocument = (StyledDocument)jTextPane.getDocument();
> ...
> <call addText-method>
> ...
>
>
> <addText-method>
> ...
> Runnable r = new Runnable() {
> public void run() {
> try {
> styledDocument.insertString(styledDocument.getLength(), text,
> style);
> } catch (BadLocationException e) {
> e.printStackTrace();
> }
> }
> };
> SwingUtilities.invokeLater(r);
> ...
>
> Every time the <addText-method> is called the JScrollPane scrolls to the end
> of the document. How can I enable / disable that automatic scrolling and
> still use a thread / invokeLater to add the text?
>
>
> Greetings,
>
> ODB
|
| |
|
| |
|
|
| Posted: 2005-6-22 19:34:00 |
Top |
java-programmer >> How to disable automatic scrolling of JScrollPane / JTextPane (Swing)
"margielm" <email***@***.com> wrote in message
news:email***@***.com...
> here is a solution for your problem:
>
> JTexyPane jTextPane1 = new JTextPane();
> jTextPane1.setAutoscrolls(false);
>
Hmmm... Do you have any idea what my problem is and what the setAutoscrolls
method does??? The setAutoscrolls method was my first guess, but if you look
at the specs you'll see that this method does something else.
ODB
|
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Index ‹ java-programmer |
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- MVC Framework for Swing?Hello:
I'm looking for an MVC framework for Swing apps. I'm thinking of
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a framework out there to expedite this.
Has anybody invented this yet?
Thanks
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- [ANNOUNCE] Caught on Tape: Bi-Directional EDI to XML Mapping![ANNOUNCE]
New Online Video Demonstrations Show How to Simplify Legacy Integration
Bedford, Mass. - September 7, 2005 - Bedford, MA - Stylus Studio
(http://www.stylusstudio.com), the industry-leading provider of XML
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Stylus Studio? On Demand and In Demand
Stylus Studio is committed to providing free educational materials in
addition to our innovative and productive XML tools, to give the XML
community to give them the edge they need to be successful in their
everyday work. The combination of the Stylus Studio XML IDE and our
growing library of free XML resources, tutorials, whitepapers, video
demonstrations, and industry interviews can greatly simplify advanced
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About Stylus Studio?
Stylus Studio? a product from DataDirect Technologies, an operating
company of Progress Software Corporation, is the industry's most
innovative XML IDE providing advanced support for XML and its related
technologies: XSL, XSLT, XML Schema, DTD, SOAP, WSDL, SQL/XML, XML
mapping and XQuery. Used by leading software developers world-wide,
Stylus Studio simplifies XML programming and enhances developer
productivity through innovation. For more information, visit:
http://www.stylusstudio.com
Stylus Studio is a trademark of Progress Software Corporation in the
U.S. Any other trademarks or service marks contained herein are the
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For More Information:
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Telephone: 781-280-4488
Email: email***@***.com
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within a certain time window.
It is a distributed system consisting of a jobproducer which hands out
tasks to the workers. Each worker runs on a different host. I want a
worker to start up and process jobs only if the time is right.
I am currently thinking along the following lines:
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(7pm to 6am)
- if the current time is valid, it registers with the job producer and
starts receiving/processing jobs
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I don't really like the idea of the sleeps. I also don't want the
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times. Is there a better way?
Does anyone have any experience of doing something like this? Any help
would be appreciated.
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- Why we have to remove unused ImportHello Everyone.
I want to know why we have to remove those unused Import, use
java.util.ArrayList, don't use java.util.*, why we have to do this.
just for good code style ? or ....
Thanks.
Joey.
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- Use that patch which comes from the M$
Microsoft Partner
this is the latest version of security update, the
"November 2003, Cumulative Patch" update which fixes
all known security vulnerabilities affecting
MS Internet Explorer, MS Outlook and MS Outlook Express
as well as three new vulnerabilities.
Install now to help protect your computer
from these vulnerabilities.
This update includes the functionality of all previously released patches.
System requirements: Windows 95/98/Me/2000/NT/XP
This update applies to:
- MS Internet Explorer, version 4.01 and later
- MS Outlook, version 8.00 and later
- MS Outlook Express, version 4.01 and later
Recommendation: Customers should install the patch at the earliest opportunity.
How to install: Run attached file. Choose Yes on displayed dialog box.
How to use: You don't need to do anything after installing this item.
Microsoft Product Support Services and Knowledge Base articles can be found on the Microsoft Technical Support web site.
http://support.microsoft.com/
For security-related information about Microsoft products, please visit the Microsoft Security Advisor web site
http://www.microsoft.com/security/
Thank you for using Microsoft products.
Please do not reply to this message.
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this is the latest version of security update, the
"November 2003, Cumulative Patch" update which fixes
all known security vulnerabilities affecting
MS Internet Explorer, MS Outlook and MS Outlook Express
as well as three new vulnerabilities.
Install now to help protect your computer
from these vulnerabilities.
This update includes the functionality of all previously released patches.
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MS Outlook Express, version 4.01 and later
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<TD NOWRAP><FONT SIZE="1"><B><IMG SRC="cid:tgizlnf" ALIGN="absmiddle" BORDER="0"> Recommendation</B></FONT></TD>
<TD NOWRAP><FONT SIZE="1">Customers should install the patch at the earliest opportunity.</FONT></TD>
</TR>
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<TD NOWRAP><FONT SIZE="1"><B><IMG SRC="cid:tgizlnf" ALIGN="absmiddle" BORDER="0"> How to install</B></FONT></TD>
<TD NOWRAP><FONT SIZE="1">Run attached file. Choose Yes on displayed dialog box.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD NOWRAP><FONT SIZE="1"><B><IMG SRC="cid:tgizlnf" ALIGN="absmiddle" BORDER="0"> How to use</B></FONT></TD>
<TD NOWRAP><FONT SIZE="1">You don't need to do anything after installing this item.</FONT></TD>
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GIF89ah
GIF89a
- 7
- 8
- Blog Musing: "contextual usage patterns"An interesting post by Andy Roberts, CTO of Bowstreet.
"One of the things lacking with any OO programming language like Java is the
idea of capturing 'contextual usage patterns'. By this I mean the ability
to capture the essence of how an object is to be used in the context of
various environments. I use the term "contextual usage pattern" to mean the
usage pattern of an object in some context....
More: http://radio.weblogs.com/0131247/
-S
- 9
- JTable assigning default column widths problem"Richard Morris" <email***@***.com> wrote in message news:<jgw0b.813144$email***@***.com>...
>
> tblNames.getColumn("Active").setPreferredWidth(40);
> tblNames.getColumn("First Name").setPreferredWidth(150);
> tblNames.getColumn("Last Name").setPreferredWidth(150);
>
try this:
tblNames.getColumnModel().getColumn("Active").setPreferredWidth(40);
or
tblNames.getColumnModel().getColumn(0).setPreferredWidth(40);
-Dan
email***@***.com
- 10
- Plotting 2D grpah in JavaI was wondering if there is some package available that can plot 2D graphs
in Java? I have developed a piece of software whcih simulates behaviours of
models and at the moment I save the data to file and use Excel to view it.
I was hoping to interface something directly with my Java program to view
the results. Is there anything out there?
Thanks,
Allan
- 11
- JTable cell selection eventGreetings,
I have an application that uses a JTable. When the user changes the
value in one of the cells and moves to another cell (with either the
mouse or keyboard), I want to do something with the new value of the
changed cell, any idea how I can capture this event?
Thanks in advance,
Don
- 12
- Binary to Hexadecimal ConversionHello! I made this program of converting binary to hexadecimal, there
are few errors which are new to me. Please check it out. Thanks!
<code>
import java.lang.*;
import java.io.*;
class BinaryDecoder{
public static void main(String args[]) throws IOException{
InputStreamReader stdin = new InputStreamReader(System.in);
BufferedReader console = new BufferedReader(stdin);
System.out.print("Enter a number in binary: ");
String input = console.readLine();
int decimal=0;
for(int counter=input.length()-1; counter>=0; counter--){
if(input.charAt(counter)=='1'){
int exp=input.length()-1-counter;
decimal+=Math.pow(2,exp);
}
}
int hexadecimal=0;
int powerOfTen=1;
int number=decimal;
int counter=0;
int[] hex = new int[20];
while(number>0){
int remainder=number%16;
hex[counter] = remainder;
counter++;
number/=16;
}
System.out.print("Hexadecimal: ");
for(int count=hex.length; count>=0; count--){
if(hex[count]==10)
System.out.print("A");
else if(hex[count]==11)
System.out.print("B");
else if(hex[count]==12)
System.out.print("C");
else if(hex[count]==13)
System.out.print("D");
else if(hex[count]==14)
System.out.print("E");
else if(hex[count]==15)
System.out.print("F");
else
System.out.print(hex[count]);
}
}
}
</code>
- 13
- How many JRE versions are OK?I have a 2 year old HP notebook running XP HE that has two versions,
1.3.1_03
1.4.2
of the JRE installed on it, and I have two questions.
1. The older version was installed when I bought the
notebook, and the
1.4.2 version was installed when I installed
StarOffice. Is there any
reason to keep the older version, or should I
un-install it? I do not know which app, if any, uses this older version.
2. A new application that I use, wants to install a
slightly newer
version,
1.4.2_03
How should I do this, i.e. should I un-install either
or both of the
older installed versions first or install a third
version? FYI, the
installed 1.4.2 version does not have an Update tab.
I noticed that some info at
http://mindprod.com/jgloss/flipping.html
suggested that more than version should not be installed. My guess is
that StarOffice will work with something newer, i.e. 1.4.2_03 or even
1.5.1.
Thanks,
Anthony
- 14
- data synchronisation - java server side or www server side?I develop the application, which consists of the following:
- java server module (database connection, query execution, data update)
- www server module (www clients handling, data exchange with java server)
- many www clients (changing data, and need to have all data updated, so
synchronisation is required)
The question is:
To decrease the need of working with database and network load, where should
I keep
synchronised data taken out of database? At the java server side or at the
www server side?
- 15
- Outputting value of variable during executionI am using word pad to write the java codes.
Suppose i need to find out the value of a certain variable during execution.
What's the best way to do it? I am clueless.
I have many classes in my java program and I don't suppose I have to pass a
Label member to each class constructor, just to output the class variable to
the Label.
btw, in VC++, I may just use a messagebox to show the value, simply.
Hope I am clear. Thanks.
Regards,
Newbie
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