How to overload = operator in Java?
Like String s = "somestring" or Integer i=10, how to develop a class with '=' operator overloaded?
For example
MyClass obj = 12.3f;(similar to Float class)
I understand the answer. But how are these classes
like String, Integer and other wrapper classes built
for = operator overloading? Is this accomplished
using native code?It's just how the language is defined. [url http://java.sun.com/docs/books/jls/third_edition/html/j3TOC.html]The JLS defines how these operators are required to behave. The compiler interpets them as per the JLS, to generate the proper bytecodes.
Similar Messages
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I am Fedora 13x64 bit. I just installed FF v6.0.2 from the FF download site. I backed up the existing FF 3.6 as firefox_old
I need to have a Java plugin to access company site, how do I configure the Java Plugin ?
At the Plugin area in FF6 there is no Java Plugin available, even after a search.
I have Java 1.6.0 installed in the OS at:
/usr/lib/jvm/java-1.6.0/jre/lib/amd64/libnpjp2.so
I googled how to configure Java Plugin for FF 6 for Fedora 13 and the trick was to create a soft link from /home/<userID>/.mozilla/plugins to the above libnpjp2.soAVtech wrote:
. . . If a person can't get an answer here I don't know where else to turn since Sun certainly wouldn't offer tech support for a free product . . .These forums are user forums, and only occasionally visited by Sun employees. Sun does provide Java technical support options, although (of course) at a charge.
See:
http://developers.sun.com/services/
. . . I guess we'll just use JRE 5 until it's unsupported, whenever that will be. I'm still waiting for an answer on that question, too. See:
http://java.sun.com/products/archive/eol.policy.html
http://www.sun.com/service/eosl/
This document (part IV and Appendix) has some debugging and troubleshooting information that may allow someone involved in the problem to resolve the cause:
See:
http://java.sun.com/javase/6/docs/technotes/guides/plugin/developer_guide/contents.htm
Any steps that you can take to isolate the problem to specific Java versions, browsers, applets, web sites, operating systems (and versions), etc, would enhance the possibility of getting help.
You can try the applets at this Sun location and see if any of them are "slow".
See:
http://java.sun.com/javase/6/docs/technotes/samples/demos.html -
How can I share a *.java source file across multiple projects in NetBeans?
I'm sure this simple and a pretty common operation but how can I share a *.java source file across multiple projects in NetBeans? Right now I keep cut, coping and pasting the same source file between multiple projects to re-use the same code. But I could I make this source file a library file or something like that so that I could access it from any project. I assume this would be a generic operation but I mentioned NetBeans for clarity. Thanks.
fiebigc wrote:
I know I mentioned NetBeans but I'm most interested in the generic method for creating a library of source files that I can call into whatever program I am developing. I've done such a thing in C using header files and such but I'm trying to get a direction on how this is accomplished in Java. I'm sorry if I could edit the title I would. If anyone wants to be specific about NetBeans I welcome that too.
Edited by: fiebigc on Jun 20, 2008 5:57 PM
>I know I mentioned NetBeans but I'm most interested in the generic method for creating a library of source files that I can call into whatever program I am developing. I've done such a thing in C using header files and such but I'm trying to get a direction on how this is accomplished in Java. I'm sorry if I could edit the title I would. If anyone wants to be specific about NetBeans I welcome that too.
Edited by: fiebigc on Jun 20, 2008 5:57 PM
Create a class library.
Write your code, compile it to .class files, put those class files in a .jar file and include the jar file in the classpath whenever you want to compile a project against it. -
Hi all,
how to access OVD using Java?
Thanks,
Kumar.PHi,
You can just normal LDAP API codes to connect to OVD the same way you connect to other LDAP servers.
PFB sample code for connecting to OVD.
Properties props = new Properties();
try {
props.load(new FileInputStream("LdapCredentials.Properties"));
} catch (IOException e) {
// TODO
ldapurl = "ldap://hostname:390";
ldapUser = "cn=orcladmin,ou=Org12,dc=ovid,dc=com";
userPassword = "welcome1"; //"Killtheking123456";
userContext = "ou=Join1,dc=ovid,dc=com";
Now, you have to get Directory Context as shown below.
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY,
"com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, ldapurl);
env.put(Context.SECURITY_AUTHENTICATION, "simple");
env.put(Context.SECURITY_PRINCIPAL, username);
env.put(Context.SECURITY_CREDENTIALS, password);
//Initialize the Directory context
DirContext dCtx = new InitialDirContext(env);
Then you can perform search operations or new user creation etc., as you wish.
Does this help?
-Mahendra. -
How do i know whether JAVA is installed or not in my virtual machine .
Good Morning everyone !
I am installing oracle 11.2.0.1.0 on oracle Enterprise Linux 5.5
While trying to create database through tool (dbca), I am getting following error.
$ dbca
# An unexpected error has been detected by HotSpot Virtual Machine:
# SIGSEGV (0xb) at pc=0x9fcc43e4, pid=9242, tid=3086391504
# Java VM: Java HotSpot(TM) Client VM (1.5.0_17-b02 mixed mode)
# Problematic frame:
# C [libnnz11.so+0x3c3e4]
# An error report file with more information is saved as hs_err_pid9242.log
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
Aborted
I suspect JAVA may be not compatible for my machine.
How Do I check whether java is installe or not.
Vmware machine Version is : 9
$ uname -ir
2.6.18-194.el5 i386
$ echo $ORACLE_HOME
/u01/app/oracle/product/11.2.0/db_1
$ echo $LD_LIBRARY_PATH
/u01/app/oracle/product/11.2.0/db_1/lib:/lib:/usr/lib@ Srini , AsifMuhammad
My host system is 64 bit
My guest system is 32 bit
MY HOST SYSTEM INFORMATION (
System Information
Time of this report: 10/16/2013, 20:44:07
Machine name: ORACLE-LINUX-PC
Operating System: Windows 7 Ultimate 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.130801-1533)
Language: English (Regional Setting: English)
System Manufacturer: System manufacturer
System Model: System Product Name
BIOS: BIOS Date: 07/05/11 19:20:42 Ver: 08.00.14
Processor: AMD Phenom(tm) II X4 B60 Processor (3 CPUs), ~3.3GHz
Memory: 8192MB RAM
Available OS Memory: 7936MB RAM
Page File: 4064MB used, 11803MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7601.17514 32bit Unicode
MY GUEST ( vmware version 9) details
# uname -a
Linux oel5.linuxserver 2.6.18-194.el5 #1 SMP Mon Mar 29 20:06:41 EDT 2010 i686 athlon i386 GNU/Linux
Installed package details : For RHEL 5 (32-bit):
rpm -Uvih binutils-2*
rpm -Uvih compat-libstdc++-33*
rpm -Uvih elfutils-libelf-0*
rpm -Uvih elfutils-libelf-devel-0*
rpm -Uvih elfutils-libelf-devel-static-0*
rpm -Uvih gcc-4*
rpm -Uvih gcc-c++-4*
rpm -Uvih glibc-2*`uname -p`* ----------------------------> I cannot install this package.
rpm -Uvih glibc-common-2*
rpm -Uvih glibc-devel-2*
rpm -Uvih glibc-headers-2*
rpm -Uvih kernel-headers-2*
rpm -Uvih ksh-20*
rpm -Uvih libaio-0*
rpm -Uvih libaio-devel-0*
rpm -Uvih libgcc-4*
rpm -Uvih libgomp-4*
rpm -Uvih libstdc++-4*
rpm -Uvih libstdc++-devel-4*
rpm -Uvih make-3*
rpm -Uvih numactl-devel-0*
rpm -Uvih sysstat-7*
rpm -Uvih unixODBC-2*
rpm -Uvih unixODBC-devel-2*
kernal settings
# Controls the maximum number of shared memory segments, in pages
kernel.shmall = 268435456
net.ipv4.ip_forward = 0
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.accept_source_route = 0
kernel.sysrq = 1
kernel.core_uses_pid = 1
net.ipv4.tcp_syncookies = 1
kernel.msgmnb = 65536
kernel.msgmax = 8192
kernel.shmmax = 4294967295
kernel.shmall = 1073741824
fs.file-max = 6815744
kernel.msgmni = 2878
kernel.sem = 250 32000 100 142
kernel.shmmni = 4096
net.core.rmem_default = 4194304
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
fs.aio-max-nr = 3145728
net.ipv4.ip_local_port_range = 9000 65000
I have followed : A quick step by step guide for oracle 11g R2 installation on Red Hat Enterprise Linux 5.
Please have a look and relply me , any changes needed.
Thanks .. -
How can i run my java program with out java language
Hai to every one ..Iam new to java language ...am using windows xp operating system , i did not installed java language in my system .. how can i run a java program with out installing java language... Which files is requied to run java program..?
any one can help me??Hai to every one ..Iam new to java language ...am
using windows xp operating system , i did not
installed java language in my system .. how can i run
a java program with out installing java language...
you ... can ... not ... do ... this
Which files is requied to run java program..?
any one can help me??a JVM. Download it from sun's website.
[url http://java.sun.com/javase/downloads/index.jsp]Download JavaSE here -
How do I include a JAVA file in my website using DreamweaverCC ?
Hi. I searched the forums and it seems that all questions relating to JAVA and Dreamweaver elicit zero replies.
I hope that someone has some direction. Thanks again.
I have a JAVA file that I want to include or have run within one of my pages in my WebSite.
file > new > create > and there is not an option for JAVA but there is one for PHP etc. etc.
How do I incorporate a java script into my Web Site ?
I thought that I could just copy the code into the file here - at least to begin with - but JAVA runs in the background.
I am lost
conceptually
and I do not know how to go about this task
structurally.
Thanks again,
ReginaJQuery is a core JavaScript library used by millions of web sites. It's the "do more & write less code framework." If you're into re-inventing the wheel every time you need an advanced feature (plugin), feel free to manually code it yourself with JavaScript. However, you'll need to test & debug your scripts in every conceivable browser and OS before you can be sure it's viable for use on a production site.
On the other hand, you could use a plugin and be up & running in 5 minutes or less. See the code below.
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>HTML5, with Fancybox2 Viewer</title>
<!--[if lt IE 9]>
<script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<!--LATEST JQUERY CORE LIBRARY-->
<script src="http://code.jquery.com/jquery-latest.min.js"></script>
<!--FANCYBOX plugins-->
<link href="http://cdnjs.cloudflare.com/ajax/libs/fancybox/2.1.4/jquery.fancybox.css" rel="stylesheet" media="screen">
<script src="http://cdnjs.cloudflare.com/ajax/libs/fancybox/2.1.4/jquery.fancybox.pack.js"></script>
<style>
body {
background: silver;
font-family:Segoe, "Segoe UI", "DejaVu Sans", "Trebuchet MS", Verdana, sans-serif;
#wrapper {
width: 1000px; margin:0 auto;
background:#FFF;
/**this styles image container**/
#thumbs p {
float: left;
width: 180px;
height: 12.5em;
margin: 10px 22px 0 22px; /**space between containers**/
padding: 10px; /**space around containers**/
border: 1px solid silver;
/**rounded borders**/
-moz-border-radius: 20px;
-webkit-border-radius: 20px;
border-radius: 20px;
/**this styles caption text**/
font: italic 14px/1.5 Geneva, Arial, Helvetica, sans-serif;
color: #666;
text-align: center;
/**recommend using same size images**/
#thumbs img {
width: 160px; /**adjust width to thumbnail**/
height: 120px; /**adjust height to thumbnail**/
margin-bottom: 1.5em;
opacity: 0.75;
#thumbs img:hover { opacity: 1.0 }
/**float clearing**/
#thumbs:after {
content: ".";
clear: left;
font-size: 0px;
line-height: 0;
display: block;
visibility: hidden;
</style>
</head>
<body>
<div id="wrapper">
<h1><a href="http://fancyapps.com/fancybox/">Fancybox2</a> Viewer with images</h1>
<!--insert thumbnails with links to full size images below-->
<div id="thumbs">
<p><a class="fancybox" data-fancybox-group="gallery" href="http://placehold.it/400x320.jpg" title="optional captions"><img src="http://placehold.it/160x120.jpg" alt="Thumbnail 1" /></a> <br />
Caption 1 </p>
<p><a class="fancybox" data-fancybox-group="gallery" href="http://placehold.it/400x320.jpg" title="optional captions"><img src="http://placehold.it/160x120.jpg" alt="Thumbnail 2" /></a> <br />
Caption 2 </p>
<p><a class="fancybox" data-fancybox-group="gallery" href="http://placehold.it/400x320.jpg" title="optional captions"><img src="http://placehold.it/160x120.jpg" alt="Thumbnail 3" /></a> <br />
Caption 3 </p>
<p><a class="fancybox" data-fancybox-group="gallery" href="http://placehold.it/400x320.jpg" title="optional captions"><img src="http://placehold.it/160x120.jpg" alt="Thumbnail 4" /></a> <br />
Caption 4 </p>
<!--end thumbs--></div>
<!--end wrapper--></div>
<!--FancyBox function code-->
<script>
$(document).ready(function() {
$('.fancybox').fancybox();
</script>
</body>
</html>
Nancy O. -
How can I use Seeburger java functions on SAP XI's user defined functions?
Hi All,
As my title implies; how can I use Seeburger java functions on SAP XI's user defined functions? I've tried searching over the net in tutorials regarding this topic but I failed to find one; can someone provide me information regarding my question? thanks very much.
best regards,
MikeHi Mike !
You should check your documentation about which java classes you need to reference in the "import" section of your UDF. And also deploy the java classes into the java stack or include them as a imported archive in integration repository...it should be stated in the seeburger documentation.
What kind of functions are you trying to use?
Regards,
Matias. -
How can I create a java.awt.Image from ...
Hi all,
How can I create a java.awt.Image from a drawing on a JPanel?
Thanks.JPanel p;
BufferedImage image =
new BufferedImage(p.getWidth(), p.getHeight, BufferedImage.TYPE_INT_RGB);
Graphics2D g = image.createGraphics();
p.paint(g);
g.dispose(); -
How to print "Text" in JAVA(TM)....
Does anyone know how to print "text" using Java?
- Here's an example output...
NOTE: # == 'empty spaces'
--------------------------- <- Paper
|###################|
|####Welcome#########|
|###################|
|########to##########|
|###########JAVA(TM)##|
|###################|
|#######Programming####|
|###################|
Please post a complete << SAMPLE CODE >> for printing the "text" (Welcome to JAVA(TM) Programming. Including the indentions. So it will not be like this...
-------------------- <- Paper
|Welcome |
|to |
|JAVA(TM) |
|Programming |
| |
| |
| |
| |
Thanks.Please read How To Ask Questions The Smart Way
-
How can I run a java-application on starting of Windows 2000
How can I run a java-application without any user on starting of Windows 2000?
For example, if the computer is restarted and nobody enter into it yet, my java-application should run anyway.
How can I do that?Hi, you have to put it in a Windows service.
To do this you have a program, Srvany.exe that allow to insert a .exe or .bat program in a Windows service.
For example, i develop a program, TomcatGuardian and i put it in a service because i need to run it in a server without Administrator logged in.
Regards,
Ivan. -
How can I call a java class from within my program?
I was wondering if there's a platform independent way to call a java class from my program.
Here's my scenario. I'm working on a platform independent, feature rich, object-oriented command prompt program. The way I'm designing it is that users can drop classes they write into my bin directory and gain access to the class through my program. For example, they drop a class named Network.class in the bin directory. They would type Network network at my command prompt and gain access to all the methods available in that class. They can then type system.echo network.ipaddress() at my prompt and get the system's ip address. I have it designed that there's a server running in the background and the clients connect to my port. Once connected the end-user can enter their user name and password and gain access to the system. When they type a command they actually call another java program which connects to my server using a seperate thread. They can then communicate back and forth. I have it set that everything has a process id and it's used to keep track of who called what program. Once the program is done it disconnects and closes. Rather than getting into the nitty gritty (I didn't want to get into heavy detail, I know how everything will work) I'm really interested in finding out how I can call a java program from my program. I don't want it to be part of the app in any way.
-
How to invoke A CORBA-Java Client Application, from Oracle???
Hi,
I have a CORBA-Java Client Application, which takes the input parameters from a Oracle table and calls the CORBA Server, passes these parameters to the C++ Server Application and gets the results back thorugh CORBA.
My problem is, this java application needs to be invoked, when ever there is a new record in the Oracle table.
I am not sure if i can use Java Stored Procedures in Oracle in this case, because my app is in Sun JVM and i am using BEA WebLogic Enterprise 5.1 for the CORBA.
Is there any other way by which i can invoke this app, when a new record is updated in the Oracle table?
Currently, i have just put a TIMER in my java App, to check the oracle table in every few seconds, to see if there is a new reocrd. If it finds a new record it invokes the corresponding class(corba class), or else just keep sending a messsage that no new record is available.
The problems i am facing in this method are as follows;
1. Unnecessarily, the application has to keep on running if there is no request coming frequently.
2. When there is a new record found, the Corba Class is called and the whole process (till it gets the result back from the server) takes about 20 - 30 secs. But within this period, if there is another record coming into Oracle table, my timer class doesnt invoke another corba class....(though i am using multithreading by using the RemidTask method in the timer.schedule.
(timer.schedule(new RemindTask(),10,5*1000);)
3. Also, if during the first call, there is some error, then the whole process exits, instead of another process running parallely (when a second new record is found).
So how does this timer class act like a multithreading process?
Well, i hope i am not confusing....Please let me know if anyone wants bit more elaboration on this.
It would be really helpful if someone can suggest some answer to my problem.
Thanks in advance.Thank you very much Keith.
Though i am really getting a hope of solving this problem, from you answer, i am actually not 100% sure if i understood your reply properly.
First of all, about
1. "use the update stored procedure to place the updated record (or unique index) onto an Oracle Application Queue."
-- Why do i need to put the record in the AQ. (Frankly speaking, at this moment i dont have much idea about AQ, probably i can learn more about it from oracle technet site? Or would u suggest anything else?)
Then,
2."Your app then waits on this queue and for each new message, consumes it, gets the data required from the AQ load (e.g the index and or record), and fires off the CORBA class"
-- How does my application stay in the queue? and gets the data from the queue?
Of course, as far as i understand, i am going through the same principle...keeping on running a timer class, which keeps on checking the table for a new record, and when it finds, it calls the CORBA class.
Of course, i feel there should be a difference in running the timer continuosly and staying in queue. However i am totally unaware, how can i make my java app to wait in the queue and waits for a new record?
Can you please elaborate your answer a bit more, because i dont know about the AQ, that you have mentioned.
Thank you very much in advance for your time. But please know that it will be of great help to me and hence will be higly appreciated.
Regards,
Subhasree. -
How do i run a java program an another directory?
How do I run a java program that's in a different directory?
I have been doing this in the command line:
java "C:\Document and Settings\freeOn\Desktop\Java\Test\test"
and I get
Exception in thread "main" java.lang.NoClassDefFoundError:
C:\Document and Settings\freeOn\Desktop\Java\Test\test
I just thought there might be a quick way to do this and not
have to cd to the following dir evertime i want to run an app in
console.
The test.java file is this:
import java.io.*;
public class test {
public static void main(String args[]) {
System.out.println("Testing.....");Ok I looked in the java help and found the classpath, this makes it alittle easier.
java -cp C:\DOCUME~1\freeOn\Desktop\Java\Test\ test
At least i can run this in the run dialog which makes it easier thanks for you help kota balaji -
How to Compile & Deploy the Java Concurrent Program File
Hi,
There is a requirement to create the Java Concurrent Program in Oracle eBusiness. I am able to create the Java Concurrent Program file. But unable to do the following things:
1.Since it is custom file, which location I will deploy the file?
2. How to compile the file?
3. In the execution file path and executable file name what should I specify for JCP?
Please guide me.
ThanksPlease see (How to register and execute Java Concurrent Program ?in Oracle Applications R11i ? [ID 186301.1]) for the complete steps (i.e. define concurrent program and add it to the request group, .etc.) -- This is also applicable to R12.
You may also see:
Classpath Setting of Third Party Jar Files in R12 Java Concurrent Program (JCP) [ID 1292694.1]
Integrating Custom Applications with Oracle Applications [ID 176852.1]
Java Concurrent Program FAQ [ID 827575.1]
https://forums.oracle.com/forums/search.jspa?threadID=&q=Java+AND+Concurrent+AND+Program&objID=c3&dateRange=all&userID=&numResults=15&rankBy=10001
Thanks,
Hussein
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