Force browser's Java version in a multi-version environment?

Most of our machines run only JRE 1.4.2_08, but there is a sizable part of the population that have both 1.4.2_08 and 1.5 installed for compatibility reasons. Is there any way to configure the browser, the plugin, or the content of the web pages themselves in such a way that certain applications use one version, and certain applications use the other?
Hope this is clear enough.
Thanks,
Andrew

After digging through the forum a bit, I have found that I can use the following switch in my shortcut to SQLDeveloper to achive this.
C:\oracle\sqldeveloper\sqldeveloper.exe -J-Dide.user.dir="%USERPROFILE%\.SQLdeveloper"
I tried to modify the SQLDeveloper.boot but that did not seem to work correctly. The above mentioned switch updates the "c:\documents and settings\%username%\.sqrdeveloper" with all password related information and SQL history that was important to meet our security requirements. We updated the shortcut in the AllUsers profile and this seems to work globally.
The only bad thing about this approach is that anyone can go into %AppData%\sqldeveloper.exe and run it without using the shortcuts. This would bypass the security precaution.
Is there a better way to approach this?
Regards,
Tom

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We have an application which has client and server mechanism.
Our application can be accessed by any internet browser on any machine of the network but there is only one server in the network.
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We do have one link in our application webpage. When user clicks on that link, the request goes to the server component which is running on different machine. Now server process the request and in responce we do show some images in applet window at the customer webpage.
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Sun's latest versioning solution for applets and JWS apps. is [deployJava.js|http://java.sun.com/javase/6/docs/technotes/guides/jweb/deployment_advice.html]. I also offer the [Java Version Checker Applet|http://pscode.org/jre.html] as an alternate way of ensuring a minimum major version of the JRE.

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Hi,
How can I know what Java version can handle a Browser?
I mean, for example , A machine with IExplorer 5.0 ,windows 98, without SDK installed, what kind of Applet could run in it?
Is any option, preferences or site where I can find this answer?
thanks.

You can test it with the following applet:import java.awt.Graphics;
public class VersionTest extends java.applet.Applet {
public void paint(Graphics g) {
g.drawString("Java version: " + System.getProperty("java.version"), 10, 20);
}

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Hi,
I think PI 7.1 works fine with java version 1.5 and 1.6 (not sure..though)
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Hi,
I am trying to launch a browser from Java.
I am doing the following.
String command = "cmd" + "/c" + "start" + " browserURL";
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browser is unable to open the required application.
Can someone help me in this.
One way is to increase the buffer size on the command prompt?
Is there any java command for this?
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AR

this is my second time posting this, take note of it. I can't remember where i got it from, but credits go to the person that wrote it. It has helped me out thousands of times!!!
to use, compile, then call from your program:
org.newio.utils.BrowserLauncher.openURL("your url here")dfwtc
package org.newio.utils;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.*;
public class BrowserLauncher
    private static int jvm;
    private static Object browser;
    private static boolean loadedWithoutErrors;
    private static Class mrjFileUtilsClass;
    private static Class mrjOSTypeClass;
    private static Class macOSErrorClass;
    private static Class aeDescClass;
    private static Constructor aeTargetConstructor;
    private static Constructor appleEventConstructor;
    private static Constructor aeDescConstructor;
    private static Method findFolder;
    private static Method getFileType;
    private static Method makeOSType;
    private static Method putParameter;
    private static Method sendNoReply;
    private static Object kSystemFolderType;
    private static Integer keyDirectObject;
    private static Integer kAutoGenerateReturnID;
    private static Integer kAnyTransactionID;
    private static final int MRJ_2_0 = 0;
    private static final int MRJ_2_1 = 1;
    private static final int WINDOWS_NT = 2;
    private static final int WINDOWS_9x = 3;
    private static final int OTHER = -1;
    private static final String FINDER_TYPE = "FNDR";
    private static final String FINDER_CREATOR = "MACS";
    private static final String GURL_EVENT = "GURL";
    private static final String FIRST_WINDOWS_PARAMETER = "/c";
    private static final String SECOND_WINDOWS_PARAMETER = "start";
    private static final String NETSCAPE_OPEN_PARAMETER_START = " -remote 'openURL(";
    private static final String NETSCAPE_OPEN_PARAMETER_END = ")'";
    private static String errorMessage;
    private BrowserLauncher()
    private static boolean loadClasses()
        switch(jvm)
        default:
            break;
        case 0: // '\0'
            try
                Class aeTargetClass = Class.forName("com.apple.MacOS.AETarget");
                macOSErrorClass = Class.forName("com.apple.MacOS.MacOSError");
                Class osUtilsClass = Class.forName("com.apple.MacOS.OSUtils");
                Class appleEventClass = Class.forName("com.apple.MacOS.AppleEvent");
                Class aeClass = Class.forName("com.apple.MacOS.ae");
                aeDescClass = Class.forName("com.apple.MacOS.AEDesc");
                aeTargetConstructor = aeTargetClass.getDeclaredConstructor(new Class[] {
                    Integer.TYPE
                appleEventConstructor = appleEventClass.getDeclaredConstructor(new Class[] {
                    Integer.TYPE, Integer.TYPE, aeTargetClass, Integer.TYPE, Integer.TYPE
                aeDescConstructor = aeDescClass.getDeclaredConstructor(new Class[] {
                    java.lang.String.class
                makeOSType = osUtilsClass.getDeclaredMethod("makeOSType", new Class[] {
                    java.lang.String.class
                putParameter = appleEventClass.getDeclaredMethod("putParameter", new Class[] {
                    Integer.TYPE, aeDescClass
                sendNoReply = appleEventClass.getDeclaredMethod("sendNoReply", new Class[0]);
                Field keyDirectObjectField = aeClass.getDeclaredField("keyDirectObject");
                keyDirectObject = (Integer)keyDirectObjectField.get(null);
                Field autoGenerateReturnIDField = appleEventClass.getDeclaredField("kAutoGenerateReturnID");
                kAutoGenerateReturnID = (Integer)autoGenerateReturnIDField.get(null);
                Field anyTransactionIDField = appleEventClass.getDeclaredField("kAnyTransactionID");
                kAnyTransactionID = (Integer)anyTransactionIDField.get(null);
                break;
            catch(ClassNotFoundException cnfe)
                errorMessage = cnfe.getMessage();
                return false;
            catch(NoSuchMethodException nsme)
                errorMessage = nsme.getMessage();
                return false;
            catch(NoSuchFieldException nsfe)
                errorMessage = nsfe.getMessage();
                return false;
            catch(IllegalAccessException iae)
                errorMessage = iae.getMessage();
            return false;
        case 1: // '\001'
            try
                mrjFileUtilsClass = Class.forName("com.apple.mrj.MRJFileUtils");
                mrjOSTypeClass = Class.forName("com.apple.mrj.MRJOSType");
                Field systemFolderField = mrjFileUtilsClass.getDeclaredField("kSystemFolderType");
                kSystemFolderType = systemFolderField.get(null);
                findFolder = mrjFileUtilsClass.getDeclaredMethod("findFolder", new Class[] {
                    mrjOSTypeClass
                getFileType = mrjFileUtilsClass.getDeclaredMethod("getFileType", new Class[] {
                    java.io.File.class
                break;
            catch(ClassNotFoundException cnfe)
                errorMessage = cnfe.getMessage();
                return false;
            catch(NoSuchFieldException nsfe)
                errorMessage = nsfe.getMessage();
                return false;
            catch(NoSuchMethodException nsme)
                errorMessage = nsme.getMessage();
                return false;
            catch(SecurityException se)
                errorMessage = se.getMessage();
                return false;
            catch(IllegalAccessException iae)
                errorMessage = iae.getMessage();
            return false;
        return true;
    private static Object locateBrowser()
        if(browser != null)
            return browser;
        switch(jvm)
        case 0: // '\0'
            try
                Integer finderCreatorCode = (Integer)makeOSType.invoke(null, new Object[] {
                    "MACS"
                Object aeTarget = aeTargetConstructor.newInstance(new Object[] {
                    finderCreatorCode
                Integer gurlType = (Integer)makeOSType.invoke(null, new Object[] {
                    "GURL"
                Object appleEvent = appleEventConstructor.newInstance(new Object[] {
                    gurlType, gurlType, aeTarget, kAutoGenerateReturnID, kAnyTransactionID
                return appleEvent;
            catch(IllegalAccessException iae)
                browser = null;
                errorMessage = iae.getMessage();
                return browser;
            catch(InstantiationException ie)
                browser = null;
                errorMessage = ie.getMessage();
                return browser;
            catch(InvocationTargetException ite)
                browser = null;
                errorMessage = ite.getMessage();
                return browser;
        case 1: // '\001'
            File systemFolder;
            try
                systemFolder = (File)findFolder.invoke(null, new Object[] {
                    kSystemFolderType
            catch(IllegalArgumentException iare)
                browser = null;
                errorMessage = iare.getMessage();
                return browser;
            catch(IllegalAccessException iae)
                browser = null;
                errorMessage = iae.getMessage();
                return browser;
            catch(InvocationTargetException ite)
                browser = null;
                errorMessage = ite.getTargetException().getClass() + ": " + ite.getTargetException().getMessage();
                return browser;
            String systemFolderFiles[] = systemFolder.list();
            for(int i = 0; i < systemFolderFiles.length; i++)
                try
                    File file = new File(systemFolder, systemFolderFiles);
if(file.isFile())
Object fileType = getFileType.invoke(null, new Object[] {
file
if("FNDR".equals(fileType.toString()))
browser = file.toString();
return browser;
catch(IllegalArgumentException iare)
browser = browser;
errorMessage = iare.getMessage();
return null;
catch(IllegalAccessException iae)
browser = null;
errorMessage = iae.getMessage();
return browser;
catch(InvocationTargetException ite)
browser = null;
errorMessage = ite.getTargetException().getClass() + ": " + ite.getTargetException().getMessage();
return browser;
browser = null;
break;
case 2: // '\002'
browser = "cmd.exe";
break;
case 3: // '\003'
browser = "command.com";
break;
case -1:
default:
browser = "netscape";
break;
return browser;
public static void openURL(String url)
throws IOException
if(!loadedWithoutErrors)
throw new IOException("Exception in finding browser: " + errorMessage);
Object browser = locateBrowser();
if(browser == null)
throw new IOException("Unable to locate browser: " + errorMessage);
switch(jvm)
case 0: // '\0'
Object aeDesc = null;
try
try
aeDesc = aeDescConstructor.newInstance(new Object[] {
url
putParameter.invoke(browser, new Object[] {
keyDirectObject, aeDesc
sendNoReply.invoke(browser, new Object[0]);
catch(InvocationTargetException ite)
throw new IOException("InvocationTargetException while creating AEDesc: " + ite.getMessage());
catch(IllegalAccessException iae)
throw new IOException("IllegalAccessException while building AppleEvent: " + iae.getMessage());
catch(InstantiationException ie)
throw new IOException("InstantiationException while creating AEDesc: " + ie.getMessage());
break;
finally
aeDesc = null;
browser = null;
case 1: // '\001'
Runtime.getRuntime().exec(new String[] {
(String)browser, url
break;
case 2: // '\002'
case 3: // '\003'
Runtime.getRuntime().exec(new String[] {
(String)browser, "/c", "start", url
break;
case -1:
Process process = Runtime.getRuntime().exec((String)browser + " -remote 'openURL(" + url + ")'");
try
int exitCode = process.waitFor();
if(exitCode != 0)
Runtime.getRuntime().exec(new String[] {
(String)browser, url
catch(InterruptedException ie)
throw new IOException("InterruptedException while launching browser: " + ie.getMessage());
break;
default:
Runtime.getRuntime().exec(new String[] {
(String)browser, url
break;
static
loadedWithoutErrors = true;
String osName = System.getProperty("os.name");
if("Mac OS".equals(osName))
String mrjVersion = System.getProperty("mrj.version");
String majorMRJVersion = mrjVersion.substring(0, 3);
try
double version = Double.valueOf(majorMRJVersion).doubleValue();
if(version == 2D)
jvm = 0;
} else
if(version >= 2.1000000000000001D)
jvm = 1;
} else
loadedWithoutErrors = false;
errorMessage = "Unsupported MRJ version: " + version;
catch(NumberFormatException numberformatexception)
loadedWithoutErrors = false;
errorMessage = "Invalid MRJ version: " + mrjVersion;
} else
if(osName.startsWith("Windows"))
if(osName.indexOf("9") != -1)
jvm = 3;
} else
jvm = 2;
} else
jvm = -1;
if(loadedWithoutErrors)
loadedWithoutErrors = loadClasses();
suck my balls

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Hi,
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hi wangwj,
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Java versions for OIM install

Hi,
Last time when I installed OIM, everything worked fine, but I was unable to open the workflow manager applet. I think maybe I used the wrong JRE/JDK. Please read below the environment I am using and suggest which Jave version should be used.
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Browser: IE
OIM: 9.1
Application Server: Weblogic (latest version)
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b> 1.6 Oracle JRockit shipped with Weblogic
c> any other Java version
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I recently finished some work where I rewrote an applet. The applet used to require only Java 1.1; however, because I used Swing instead of the AWT, Java 2 is required to run now. It will run under 1.4.2, but I am afraid that some customers might need to upgrade their Java installation. I found some articles on how to auto-install/update the JRE when launching JNLP applications. However, I would like to keep the applet in the browser, so using Web Start is not ideal.
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I recently finished some work where I rewrote an
applet. The applet used to require only Java 1.1;
however, because I used Swing instead of the AWT,
Java 2 is required to run now. It will run under
1.4.2, but I am afraid that some customers might need
to upgrade their Java installation. I found some
articles on how to auto-install/update the JRE when
launching JNLP applications. However, I would like
to keep the applet in the browser, so using Web Start
is not ideal.
Is there a way to check the version of java installed
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(T)

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Glad to help. But seriously, since Java is a known and popular vector for cyberattack, I'd suggest leaving it disabled in your browser(s) unless it's necessary for a valid reason. Also, having allowed apps from anywhere, I'd suggest switching back to the earlier, more secure setting until another such need arises to avoid a questionable app slipping in under the wire.

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Hi Forum!
I am trying to collect client information with a jsp page and put the information into a html form.
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I assume I can get this info only with an applet.
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Thanks a lot,
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You would use liveconnect and the JSObject class to connect the Java code in the applet to JavaScript in the browser to populate the HTML:
http://www.gsu.unibel.by/pub/javascript/ch19_06.htm
http://www.apl.jhu.edu/~hall/java/JavaScript-from-Java.html

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Force browser's Java version in a multi-version environment?

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