How check is installed jre on client machine (Windows, Mac, Linux) ?

I have desktop appliaction that installed in client machine. On client machine OS maybe are :Windows, Mac or Linux. When first start my desktop application I want to check is exist jre on client machine. Is this a good solution?
          String javahome = System.getProperty("java.home").trim();
          if (javahome.length() == 0) {
               logger.warn("Not installed java!");
          } else {
               logger.trace("java home=" + javahome);
          }

Errr using Java to check if Java is installed?
Does not compute.
Perhaps you want to use some sort of installer program. Or [_webstart_|http://java.sun.com/javase/technologies/desktop/javawebstart/overview.html]?

Similar Messages

What needs to be installed on a client machine?

Downloads Documentation Discussion Forums Articles Sample Code Training RSS Resources For
Oracle Data Provider for .NET FAQ
About ODP.NET
I am familiar with SQL Server's .NET data provider, but am new to Oracle. Is it easy to learn to use ODP.NET? (Last Updated: 12/27/04)
What are the different ways Oracle integrates with Microsoft .NET? (7/22/05)
Where can I find ODP.NET help and sample code? (12/12/03)
I have ODP.NET installed, but I can't find the ODP.NET Dynamic Help. Where is it? (4/11/05)
What are the new features in this version of ODP.NET? (7/22/05)
How do I make a feature enhancement request for ODP.NET? (12/04/02)
What features will ODP.NET support in future releases? (12/04/02)
Configuration and Certification
Do I need to install ODP.NET on my Oracle database server? (7/22/05)
Can ODP.NET work with Oracle8, Oracle8i, Oracle9i, and Oracle10g database (DB) servers? Can these DB servers be on Linux or Unix? (7/22/05)
Can ODP.NET be used with an Oracle8, Oracle8i, or Oracle9i Release 1 client? (11/02/04)
What do I need to have installed on my client machine to have ODP.NET work? (11/02/04)
Does ODP.NET support Windows Server 2003, .NET Framework 1.1, and Visual Studio .NET 2003? (11/02/04)
Common Runtime Issues
How do I use distributed transactions with ODP.NET? (3/20/03)
What if I have some applications that require an earlier Oracle client (e.g. using the Microsoft OLE DB Provider for Oracle with Server Explorer)? I want to be able to run both ODP.NET and these other applications from the same machine. (12/12/03)
I get an error: "Unable to load DLL (OraOps.dll)". How do I fix this? (4/23/04)
I want to use the Oracle9i Release 2 version of OraMTS with an Oracle8i database. I get a "No error information available: XACT_E_NOENLIST(0x8004D00A)" error when running an application using OraMTS. (12/04/02)
ODP.NET and Other Oracle Providers for .NET
Are ODP.NET and Microsoft .NET Framework Data Provider for Oracle the same product? (12/12/03)
Which .NET data access driver should I use among ODP.NET, Microsoft .NET Framework Data Provider for Oracle, OLE DB .NET, and ODBC .NET? (12/04/02)
I bundle ODP.NET with an application I've built, which I want to distribute or sell. Does Oracle charge licensing fees for this? (7/16/03)
Q: I am familiar with SQL Server's .NET data provider, but am new to Oracle. Is it easy to learn to use ODP.NET?
A: Yes. ODP.NET inherits from all the ADO.NET base classes, which is what SQL Server's .NET data provider, SqlClient, is based upon. The ADO.NET constructors, methods, and properties that you use with SQL Server will be the same with Oracle. For many applications, the only notable differences will be having all objects that were preceded with "Sql", such as SqlConnection, be preceded by "Oracle", such as OracleConnection, and accounting for differences between Oracle and SQL Server database data types, SQL, and stored procedure calls.
Q: What are the different ways Oracle integrates with Microsoft .NET?
A: Oracle integrates with .NET in a number of ways. For optimized .NET data access, ODP.NET enables access to all of the Oracle database's advanced features, such as RAC and XML DB, while ensuring the fastest performance from the .NET Framework.
For .NET development tools that make Oracle easier to use, the Oracle Developer Tools for Visual Studio .NET provide wizards and designers that auto-generate ODP.NET code and can browse and edit schemas and stored procedures. Additionally, it includes a Data Window to modify and view data and context-sensitive help.
Beginning with Oracle Database 10g Release 2, developers can build and deploy .NET stored procedures for their Oracle database.
For application integration, web services can facilitate integration between your existing Oracle and .NET applications.
Q: Where can I find ODP.NET help and sample code?
A: ODP.NET documentation is available from within Visual Studio .NET using Dynamic Help. Just hit the F1 key when your cursor is on an ODP.NET API and a help page for that API will appear right within Visual Studio .NET.
Additional ODP.NET documentation is available both locally installed and from the ODP.NET documentation page.
Sample code can be found both locally as part of the ODP.NET installation (e.g. c:\oracle\<Oracle Home Name>\ODP.NET\samples) and on ODP.NET samples page.
ODP.NET users can ask questions on the ODP.NET discussion forum.
Q: I have ODP.NET installed, but I can't find the ODP.NET Dynamic Help. Where is it?
A: This behavior sometimes occurs when installing new Visual Studio .NET versions over an ODP.NET installation. To enable ODP.NET Dynamic Help, go to Visual Studio .NET Combined Help Collection Manager located in Visual Studio .NET 2002 or Visual Studio .NET 2003. Make sure the box next to the Oracle Data Provider for .NET Help is checked and click on the Update VSCC button. Close Visual Studio .NET and re-open it to enable ODP.NET Dynamic Help.
Note: Because of security restrictions, you may need to copy and paste the links above to a browser, rather than clicking on them. Once copied to a local browser, if you have a Windows service pack that prevents active content (e.g. Windows XP service pack 2), you will need to allow active content to view the complete page. To do this, click on the yellow bar at the top of the Visual Studio .NET Combined Help Collection Manager page, which indicates active content has been blocked. Select "Allow Blocked Content". A security warning will show up. Click "Yes" and you will be able to view the page in its entirety, including having the option to incorporate the Oracle Data Provider for .NET Help into Visual Studio .NET.
Q: What are the new features in this version of ODP.NET?
A:
ODP.NET 10.2.0.1.0
Server-side ODP.NET for .NET stored procedures
RAC client-side connection load balancing and automatic connection cleanup
Database Change Notification
LOB and LONG retrieval - faster data retrieval, InitialLOBFetchSize can be up to 2GB, and full LOB functionality when InitialLOBFetchSize > 0 (i.e. GetOracleClob and GetOracleBlob methods are enabled). These same features are now enabled with LONGs with its respective APIs.
Connection Pool Management - explicitly clear connection pool(s)
Client Identifier property for supporting application context security, such as with VPD
Input REF Cursor parameters
ODP.NET 10.1.0.3.0
Statement caching
DeriveParameters - automatic population of stored procedure parameters
Cancel long running queries
ADO.Net 1.1 interfaces - HasRows and EnlistDistributedTransaction properties
LOB and LONG retrieval - Entire LOB and LONG column data can be retrieved even if the select list does not contain a primary key, ROWID, or unique key.
ODP.NET 10.1.0.2.0
Grid support
Schema-based XMLType
BINARY_FLOAT and BINARY_DOUBLE datatypes
Multiple Oracle Homes
ODP.NET 9.2.0.4.01
Improved XML DB and XMLType support
PL/SQL associative arrays
connection pool validation
InitialLOBFetchSize property to improve LOB retrieval performance
Q: How do I make a feature enhancement request for ODP.NET?
A: You can contact Oracle Support or use the ODP.NET discussion forum to make an enhancement request.
Q: What features will ODP.NET support in future releases?
A: In general, Oracle does not discuss features in future product releases until the release date nears. We are well aware of enhancement requests made through the ODP.NET discussion forum and Oracle support. We encourage Oracle users to continue to make their requests known. Oracle will do its best to fulfill these requests in future releases.
Q: Do I need to install ODP.NET on my Oracle database server?
A: No. You only need to install ODP.NET for running client or middle-tier .NET applications. The exception is if you are using .NET stored procedures in the database server. The server-side ODP.NET provider will automatically be installed with the Oracle Database Extensions for .NET.
Q: Can ODP.NET work with Oracle8, Oracle8i, Oracle9i, and Oracle10g database (DB) servers? Can these DB servers be on Linux or Unix?
A: Yes and yes. Oracle clients can support older and newer versions of the Oracle database. Consult the Oracle on Windows FAQ for more information.
Oracle clients on Windows can work with Oracle database servers on any platform.
Q: Can ODP.NET be used with an Oracle8, Oracle8i, or Oracle9i Release 1 client?
A: No. You need to use the Oracle9i Release 2 or higher client.
Q: What do I need to have installed on my client machine to have ODP.NET work?
What needs to be on a client machine when running an application compiled with the 10g ODP.NET?
The FAQ states the following :-
A: You will require the following:
Windows 2000, Windows XP Professional, or Windows Server 2003
Microsoft .NET Framework 1.0 or higher
Oracle9i Client Release 2 (9.2) or higher
Oracle Net Services (included with the client)
Oracle Services for Microsoft Transaction Server, Release 2 (9.2) or higher. This is required for applications using distributed transacations.
This implies that ODP.NET does NOT need to be installed on a client. However, I cannot find OraOPs9.dll on a machine with Client Release 9.2 installed. Should OraOps?.dll automatically come with a Client installation of 9.2 or higher?
Also, if an application is built with the 10g ODP.NET, can it be run from a machine with OraOps9.dll?
I'd be very grateful for anyone who can clear up my confusion.
Mick

This implies that ODP.NET does NOT need to be installed on a client. However, I cannot find OraOPs9.dll on a machine with Client Release 9.2 installed. Should OraOps?.dll automatically come with a Client installation of 9.2 or higher?
ODP.NET needs to be installed on the client. OraOps9.dll is part of ODP.NET, not the Oracle Client.
Also, if an application is built with the 10g ODP.NET, can it be run from a machine with OraOps9.dll?
If an application is built with 10g ODP.NET, it can be run with 9.2 ODP.NET as long as you do not use any 10g APIs. The new features in 10g ODP.NET are included in the doc and the ODP.NET FAQ for your reference.

How to put image file on client machine through JBOSS

I need to imlement the functionality like google map on website, where my server is JBOSS
server. We used the newest technology SVG(scalable vector graphics) which doesn't loose the
image quaility on increasing the size of the image.
we are doing backend processing of the image and throwing the png images on the client.
machine. I already written a program which can be used at the time of zooming and panning
of the image and can throw the image but that is all PC based. but when I am implementing
on the server it is giving error because code is not getting any output directory to save
the image on sever.
Please tell me if that can be happen through caching or how can I save image on
client machine without user authenication and can retrieve on the web page. so that my
server doesn't have extra load.

hi jagdish,
Check this thread. discussed uploading file step by step
Re: How to upload and search a document in KM
Regards,
Ganesh N

HOW TO GET INFORMATION ABOUT THE CLIENT MACHINE AT DATABASE LEVEL

HOW TO GET INFORMATION ABOUT THE CLIENT MACHINE AT DATABASE LEVEL USING 10g Database and 10g Application Server
we have developed an application using oracle forms 10g with
oracle database 10g and Application server 10g
Application uses a single Oracle User name to connect to database
where as at Application level there are different users (these are not database users)
Now how can we get the information about the user/his machine etc. at database level. earlier in 6i/8i we use to get by using
USERENV('TERMINAL')
we had written a triggers on tables on Insert/Update where we used to update a database field Last user terminal with USERENV('TERMINAL')
but not this information is comming to be the machine name of application server where as we wish this to be the machine name of Client. Any Way outs
thanks
Chaand Kackria

hi, you can use the sys_context function, like this:
select sys_context('userenv','current_user'),
     sys_context('userenv','os_user'),
     sys_context('userenv','host'),
     sys_context('userenv','ip_address'),
     sys_context('userenv','instance'),
     sys_context('userenv','sessionid'),
     sys_context('userenv','terminal')
from dual;
Is this what you 're looking for?

Force installing jmf on client machine

dear friends,
i need to install jmf on client machine through my web application.
it will automatically detect if the client machine has jmf installed.
if jmf is not installed, it will be installed by the web application itself.
can anybody suggest a solution??

Hi Harry,
We are also in a similar fix to install JMF silently with a Streaming product. In a nutshell, we would like JMF to be installed when he invokes our setup.exe with out going through all the screens which conventional JMF installation does. Any suggestions??
Thanks in advance for your time and help.
Sri

Deployment of JavaFX Web application on client machine(Windows OS.)

Problem Statement:
Deployment of JavaFX Web application on client machine(Windows OS.)
Error: unable to load the native libarary(JNI Windows dll) i.e. throws java.lang.UnsatisfiedLinkError exception.
Problem Description:
I have create the JavaFX application which have dependency on Native library written in Java Native Interface(JNI).
When the application is deployed on Apache 6.0 Tomcat Server(Copied .html file *.jnlp file and .jar file) and when client machine hit the html page in internet explorer version 8.0 its throws the following error(java.lang.UnsatisfiedLinkError: no JNIHelloWorld in java.library.path)
Note:
I have created the jar file which have my "JNIHelloWorld' native library dll in root directory. I have signed the jar with same signature which i have used for signing for my application Jar file.
I have mentioned the native library jar in JNLP file resource keyword as follows:
<resources os=Windows>
<nativelib href="JNIHelloWorld.jar" download="eager" />
</resources>
The complete jnlp file content is in "JavaFXApplication.jnlp file:" section below.
The description of error is as follows:
Match: beginTraversal
Match: digest selected JREDesc: JREDesc[version 1.6+, heap=-1--1, args=null, href=http://java.sun.com/products/autodl/j2se, sel=false, null, null], JREInfo: JREInfo for index 0:
platform is: 1.7
product is: 1.7.0_07
location is: http://java.sun.com/products/autodl/j2se
path is: C:\Program Files\Java\jre7\bin\javaw.exe
args is: null
native platform is: Windows, x86 [ x86, 32bit ]
JavaFX runtime is: JavaFX 2.2.1 found at C:\Program Files\Java\jre7\
enabled is: true
registered is: true
system is: true
     Match: ignoring maxHeap: -1
     Match: ignoring InitHeap: -1
     Match: digesting vmargs: null
     Match: digested vmargs: [JVMParameters: isSecure: true, args: ]
     Match: JVM args after accumulation: [JVMParameters: isSecure: true, args: ]
     Match: digest LaunchDesc: http://10.187.143.68:8282/KPIT/JavaFXApplication20.jnlp
     Match: digest properties: []
     Match: JVM args: [JVMParameters: isSecure: true, args: ]
     Match: endTraversal ..
     Match: JVM args final:
     Match: Running JREInfo Version match: 1.7.0.07 == 1.7.0.07
     *Match: Running JVM args match: have:<> satisfy want:<>*
*java.lang.UnsatisfiedLinkError: no JNIHelloWorld in java.library.path*
*     at java.lang.ClassLoader.loadLibrary(Unknown Source)*
*     at java.lang.Runtime.loadLibrary0(Unknown Source)*
*     at java.lang.System.loadLibrary(Unknown Source)*     at javafxapplication20.JavaFXApplication20.<clinit>(JavaFXApplication20.java:41)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
     at java.lang.reflect.Constructor.newInstance(Unknown Source)
     at java.lang.Class.newInstance0(Unknown Source)
     at java.lang.Class.newInstance(Unknown Source)
     at com.sun.javafx.applet.FXApplet2.init(FXApplet2.java:63)
     at com.sun.deploy.uitoolkit.impl.fx.FXApplet2Adapter.init(FXApplet2Adapter.java:207)
     at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Java Plug-in 10.7.2.11
Using JRE version 1.7.0_07-b11 Java HotSpot(TM) Client VM
User home directory = C:\Users\io839
Please find my native library code and JavaFX application code:
Native library JNI Code:
JavaFXApplication.java:
JNIEXPORT jstring JNICALL Java_javafxapplication_SampleController_printString(JNIEnv *env, jobject envObject)
     string str = "hello JNI";
     jstring jniStr = env->NewStringUTF(str.c_str());
     return jniStr;
JavaFX Application code:
JavaFXApplication.java:
package javafxapplication;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
public class JavaFXApplication extends Application {
@Override
public void start(Stage stage) throws Exception {
Parent root = FXMLLoader.load(getClass().getResource("Sample.fxml"));
Scene scene = new Scene(root);
stage.setScene(scene);
stage.show();
* The main() method is ignored in correctly deployed JavaFX application.
* main() serves only as fallback in case the application can not be
* launched through deployment artifacts, e.g., in IDEs with limited FX
* support. NetBeans ignores main().
* @param args the command line arguments
public static void main(String[] args) {
launch(args);
static{
System.loadLibrary("JNIHelloWorld");
SampleController.java file:
package javafxapplication;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Label;
public class SampleController implements Initializable {
@FXML
private Label label;
private native String printString();
@FXML
private void handleButtonAction(ActionEvent event) {
System.out.println("You clicked me!");
String str = printString();
label.setText(str);
@Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
//String str = printString();
JavaFXApplication.jnlp file:
<?xml version="1.0" encoding="utf-8"?>
<jnlp spec="1.0" xmlns:jfx="http://javafx.com" href="JavaFXApplication.jnlp">
<information>
<title>JavaFXApplication20</title>
<vendor>io839</vendor>
<description>Sample JavaFX 2.0 application.</description>
<offline-allowed/>
</information>
<resources>
<jfx:javafx-runtime version="2.2+" href="http://javadl.sun.com/webapps/download/GetFile/javafx-latest/windows-i586/javafx2.jnlp"/>
</resources>
<resources>
<j2se version="1.6+" href="http://java.sun.com/products/autodl/j2se"/>
<jar href="JavaFXApplication.jar" size="20918" download="eager" />
</resources>
<resources os=Windows>
<nativelib href="JNIHelloWorld.jar" download="eager" />
</resources>
<security>
<all-permissions/>
</security>
<applet-desc width="800" height="600" main-class="com.javafx.main.NoJavaFXFallback" name="JavaFXApplication" >
<param name="requiredFXVersion" value="2.2+"/>
</applet-desc>
<jfx:javafx-desc width="800" height="600" main-class="javafxapplication.JavaFXApplication" name="JavaFXApplication" />
<update check="always"/>
</jnlp>

No problem.
Make sure your resources are set at the proper location. Could be that tje jni.jar is under a 'lib' folder?
Normally you don't have to worry about deployment a lot if you are using like Netbeans 7.2 or higher.
When you press 'Clean and build' it creates your deployed files in the 'dist' folder.
You can change specification by adapting the build.xml file.
Of course lot of different possibilities are available for deployment!
You can find lot of info here:
[http://docs.oracle.com/javafx/2/deployment/jfxpub-deployment.htm|http://docs.oracle.com/javafx/2/deployment/jfxpub-deployment.htm]
Important to know is if you want to work with
- a standalone application (self-contained or not)
- with webstart
- or with applets
(In my case I'm using webstart, but also Self-Contained Application Packaging (jre is also installed!)

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Hi;
how to find installed versions in R1213 on Windows 2008 serverWhat you mean? You can install R12.1 than rise R12.1.3
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Helios

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How check is installed jre on client machine (Windows, Mac, Linux) ?

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