Java Browser with own name

Hello everybody,
I have written a Web-Browser in Java. When this browser loads a page from a webserver, in the webservers logfile the client name is "Java1.3.0". I want to have the browser its own name. So that in the webservers logfile is written "MyBrowser1.0" for example. Is there any possibility to change this in the Java Application?
kind regards
Andreas

I use the Java classes URLConnection and HTTPConnection: Here is the code:
HttpURLConnection connection = (HttpURLConnection)((new URL("http://www.webserver.com")).openConnection());
connection.connect();
InputStream contentStream = connection.getInputStream();
BufferedReader contentStreamReader;
String encoding = connection.getContentEncoding();
if (encoding == null)
contentStreamReader = new BufferedReader(new InputStreamReader(contentStream));
else
contentStreamReader = new BufferedReader(new InputStreamReader(contentStream, encoding));
StringBuffer textBuffer = new StringBuffer();
int sign = contentStreamReader.read();
while (sign >= 0) {
textBuffer.append((char)sign);
sign = contentStreamReader.read();
connection.disconnect();
String content = textBuffer.toString();

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    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethod(PRBootstrap.java:349)
    at com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethodPropagatingThrowable(PRBootstrap.java:390)
    at com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethod(PRBootstrap.java:439)
    at com.pega.pegarules.internal.web.servlet.WebAppLifeCycleListenerBoot.contextInitialized(WebAppLifeCycleListenerBoot.java:83)
    at weblogic.servlet.internal.EventsManager$FireContextListenerAction.run(EventsManager.java:481)
    at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
    at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
    at weblogic.servlet.internal.EventsManager.notifyContextCreatedEvent(EventsManager.java:181)
    at weblogic.servlet.internal.WebAppServletContext.preloadResources(WebAppServletContext.java:1863)
    at weblogic.servlet.internal.WebAppServletContext.start(WebAppServletContext.java:3126)
    at weblogic.servlet.internal.WebAppModule.startContexts(WebAppModule.java:1512)
    at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:486)
    at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:425)
    at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:41)
    at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:119)
    at weblogic.application.internal.flow.ScopedModuleDriver.start(ScopedModuleDriver.java:200)
    at weblogic.application.internal.flow.ModuleListenerInvoker.start(ModuleListenerInvoker.java:247)
    at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:425)
    at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:41)
    at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:119)
    at weblogic.application.internal.flow.StartModulesFlow.activate(StartModulesFlow.java:27)
    at weblogic.application.internal.BaseDeployment$2.next(BaseDeployment.java:1267)
    at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:41)
    at weblogic.application.internal.BaseDeployment.activate(BaseDeployment.java:409)
    at weblogic.application.internal.EarDeployment.activate(EarDeployment.java:58)
    at weblogic.application.internal.DeploymentStateChecker.activate(DeploymentStateChecker.java:161)
    at weblogic.deploy.internal.targetserver.AppContainerInvoker.activate(AppContainerInvoker.java:79)
    at weblogic.deploy.internal.targetserver.BasicDeployment.activate(BasicDeployment.java:184)
    at weblogic.deploy.internal.targetserver.BasicDeployment.activateFromServerLifecycle(BasicDeployment.java:361)
    at weblogic.management.deploy.internal.DeploymentAdapter$1.doActivate(DeploymentAdapter.java:51)
    at weblogic.management.deploy.internal.DeploymentAdapter.activate(DeploymentAdapter.java:200)
    at weblogic.management.deploy.internal.AppTransition$2.transitionApp(AppTransition.java:30)
    at weblogic.management.deploy.internal.ConfiguredDeployments.transitionApps(ConfiguredDeployments.java:240)
    at weblogic.management.deploy.internal.ConfiguredDeployments.activate(ConfiguredDeployments.java:169)
    at weblogic.management.deploy.internal.ConfiguredDeployments.deploy(ConfiguredDeployments.java:123)
    at weblogic.management.deploy.internal.DeploymentServerService.resume(DeploymentServerService.java:180)
    at weblogic.management.deploy.internal.DeploymentServerService.start(DeploymentServerService.java:96)
    at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)
    at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
    at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
    Caused by: java.net.UnknownHostException: Unknown protocol: 'TCP'
    at weblogic.rjvm.RJVMManager.findOrCreateRemoteInternal(RJVMManager.java:216)
    at weblogic.rjvm.RJVMManager.findOrCreate(RJVMManager.java:197)
    at weblogic.rjvm.RJVMFinder.findOrCreateRemoteServer(RJVMFinder.java:238)
    at weblogic.rjvm.RJVMFinder.findOrCreateInternal(RJVMFinder.java:200)
    at weblogic.rjvm.RJVMFinder.findOrCreate(RJVMFinder.java:170)
    at weblogic.rjvm.ServerURL.findOrCreateRJVM(ServerURL.java:153)
    at weblogic.jndi.WLInitialContextFactoryDelegate.getInitialContext(WLInitialContextFactoryDelegate.java:353)
    ... 84 more
    2013-06-24 21:16:30,038 [bxapp2.healthnet.com] [  STANDARD] [                    ] (      etier.impl.EngineStartup) ERROR   - PegaRULES initialization failed. Server: pg-sbxapp2.healthnet.com
    com.pega.pegarules.pub.context.InitializationFailedError: PRNodeImpl init failed
    at com.pega.pegarules.session.internal.mgmt.PREnvironment.getThreadAndInitialize(PREnvironment.java:387)
    at com.pega.pegarules.session.internal.PRSessionProviderImpl.getThreadAndInitialize(PRSessionProviderImpl.java:1516)
    at com.pega.pegarules.session.internal.engineinterface.etier.impl.EngineStartup.initEngine(EngineStartup.java:619)
    at com.pega.pegarules.session.internal.engineinterface.etier.impl.EngineImpl._initEngine_privact(EngineImpl.java:165)
    at com.pega.pegarules.session.internal.engineinterface.etier.impl.EngineImpl.doStartup(EngineImpl.java:138)
    at com.pega.pegarules.session.internal.engineinterface.etier.ejb.EngineBean.doStartup(EngineBean.java:120)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethod(PRBootstrap.java:349)
    at com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethodPropagatingThrowable(PRBootstrap.java:390)
    at com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethodPropagatingException(PRBootstrap.java:412)
    at com.pega.pegarules.internal.etier.ejb.EngineBeanBoot.doStartup(EngineBeanBoot.java:130)
    at com.pega.pegarules.internal.etier.ejb.EngineBMT_h449u3_ELOImpl.doStartup(EngineBMT_h449u3_ELOImpl.java:124)
    at com.pega.pegarules.web.servlet.WebAppLifeCycleListener._contextInitialized_privact(WebAppLifeCycleListener.java:259)
    at com.pega.pegarules.web.servlet.WebAppLifeCycleListener.contextInitialized(WebAppLifeCycleListener.java:167)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethod(PRBootstrap.java:349)
    at com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethodPropagatingThrowable(PRBootstrap.java:390)
    at com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethod(PRBootstrap.java:439)
    at com.pega.pegarules.internal.web.servlet.WebAppLifeCycleListenerBoot.contextInitialized(WebAppLifeCycleListenerBoot.java:83)
    at weblogic.servlet.internal.EventsManager$FireContextListenerAction.run(EventsManager.java:481)
    at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
    at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
    at weblogic.servlet.internal.EventsManager.notifyContextCreatedEvent(EventsManager.java:181)
    at weblogic.servlet.internal.WebAppServletContext.preloadResources(WebAppServletContext.java:1863)
    at weblogic.servlet.internal.WebAppServletContext.start(WebAppServletContext.java:3126)
    at weblogic.servlet.internal.WebAppModule.startContexts(WebAppModule.java:1512)
    at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:486)
    at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:425)
    at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:41)
    at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:119)
    at weblogic.application.internal.flow.ScopedModuleDriver.start(ScopedModuleDriver.java:200)
    at weblogic.application.internal.flow.ModuleListenerInvoker.start(ModuleListenerInvoker.java:247)
    at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:425)
    at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:41)
    at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:119)
    at weblogic.application.internal.flow.StartModulesFlow.activate(StartModulesFlow.java:27)
    at weblogic.application.internal.BaseDeployment$2.next(BaseDeployment.java:1267)
    at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:41)
    at weblogic.application.internal.BaseDeployment.activate(BaseDeployment.java:409)
    at weblogic.application.internal.EarDeployment.activate(EarDeployment.java:58)
    at weblogic.application.internal.DeploymentStateChecker.activate(DeploymentStateChecker.java:161)
    at weblogic.deploy.internal.targetserver.AppContainerInvoker.activate(AppContainerInvoker.java:79)
    at weblogic.deploy.internal.targetserver.BasicDeployment.activate(BasicDeployment.java:184)
    at weblogic.deploy.internal.targetserver.BasicDeployment.activateFromServerLifecycle(BasicDeployment.java:361)
    at weblogic.management.deploy.internal.DeploymentAdapter$1.doActivate(DeploymentAdapter.java:51)
    at weblogic.management.deploy.internal.DeploymentAdapter.activate(DeploymentAdapter.java:200)
    at weblogic.management.deploy.internal.AppTransition$2.transitionApp(AppTransition.java:30)
    at weblogic.management.deploy.internal.ConfiguredDeployments.transitionApps(ConfiguredDeployments.java:240)
    at weblogic.management.deploy.internal.ConfiguredDeployments.activate(ConfiguredDeployments.java:169)
    at weblogic.management.deploy.internal.ConfiguredDeployments.deploy(ConfiguredDeployments.java:123)
    at weblogic.management.deploy.internal.DeploymentServerService.resume(DeploymentServerService.java:180)
    at weblogic.management.deploy.internal.DeploymentServerService.start(DeploymentServerService.java:96)
    at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)
    at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
    at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
    Caused by: com.pega.pegarules.pub.PRRuntimeException: Method Invocation exception
    at com.pega.pegarules.session.internal.PRSessionProviderImpl.doWithRequestorLocked(PRSessionProviderImpl.java:1045)
    at com.pega.pegarules.session.internal.PRSessionProviderImpl.doWithRequestorLocked(PRSessionProviderImpl.java:765)
    at com.pega.pegarules.session.internal.mgmt.PREnvironment.getThreadAndInitialize(PREnvironment.java:379)
    ... 60 more
    Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.pega.pegarules.session.internal.PRSessionProviderImpl.doWithRequestorLocked(PRSessionProviderImpl.java:1043)
    ... 62 more
    Caused by: java.lang.NullPointerException
    at com.pega.pegarules.session.internal.async.BatchUtils.callRAClient(BatchUtils.java:150)
    at com.pega.pegarules.monitor.internal.UsageDaemonImpl.initialize(UsageDaemonImpl.java:546)
    at com.pega.pegarules.session.internal.async.Agent.start(Agent.java:1400)
    at com.pega.pegarules.session.internal.mgmt.PRNodeImpl.startNode(PRNodeImpl.java:1520)
    at com.pega.pegarules.session.internal.mgmt.PREnvironment.finishInit(PREnvironment.java:533)
    ... 67 more
    2013-06-24 21:16:30,051 [bxapp2.healthnet.com] [  STANDARD] [                    ] (      etier.impl.EngineStartup) INFO    - PegaRULES initialization failed. Server: pg-sbxapp2.healthnet.com
    2013-06-24 21:16:30,164 [bxapp2.healthnet.com] [  STANDARD] [                    ] (ervlet.WebAppLifeCycleListener) ERROR   - Enterprise tier failed to initialize properly, PegaRULES not available
    2013-06-24 21:16:30,190 [bxapp2.healthnet.com] [  STANDARD] [                    ] (ervlet.WebAppLifeCycleListener) INFO    - Web Tier initialization is complete.
    <Jun 24, 2013 9:16:30 PM PDT> <Notice> <Log Management> <BEA-170027> <The Server has established connection with the Domain level Diagnostic Service successfully.>
    <Jun 24, 2013 9:16:30 PM PDT> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to ADMIN>
    <Jun 24, 2013 9:16:30 PM PDT> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to RESUMING>
    <Jun 24, 2013 9:16:30 PM PDT> <Notice> <Server> <BEA-002613> <Channel "Default" is now listening on 167.238.162.41:8008 for protocols iiop, t3, ldap, snmp, http.>
    <Jun 24, 2013 9:16:30 PM PDT> <Notice> <WebLogicServer> <BEA-000330> <Started WebLogic Managed Server "pegamanaged2" for domain "sbxdomain8" running in Production Mode>
    <Jun 24, 2013 9:16:31 PM PDT> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to RUNNING>
    <Jun 24, 2013 9:16:31 PM PDT> <Notice> <WebLogicServer> <BEA-000360> <Server started in RUNNING mode>

    Greetings,
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    =================
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    Any help would be most appreciated.
    SeanRegards,
    Tony "Vee Schade" Cook

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    There is no question here (though discussion of the code is welcome).
    /* Update 1 */
    Now available as a stand alone or webstart app.! The STBC (see the web page*) has its own web page and has been improved to allow the user to browse to a tools.jar if one is not found on the runtime classpath, or in the JRE running the code.
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    This simple example of using the JavaCompiler made available in Java 1.6 might be of use to check that your SSCCE is actually what it claims to be!
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    import java.awt.BorderLayout;
    import java.awt.Font;
    import java.awt.EventQueue;
    import java.awt.event.ActionListener;
    import java.awt.event.ActionEvent;
    import javax.swing.JFrame;
    import javax.swing.JOptionPane;
    import javax.swing.JPanel;
    import javax.swing.JScrollPane;
    import javax.swing.JLabel;
    import javax.swing.JTextArea;
    import javax.swing.JTextField;
    import javax.swing.JButton;
    import javax.swing.SwingWorker;
    import javax.swing.border.EmptyBorder;
    import java.util.ArrayList;
    import java.net.URI;
    import java.io.ByteArrayOutputStream;
    import java.io.OutputStreamWriter;
    import javax.tools.ToolProvider;
    import javax.tools.JavaCompiler;
    import javax.tools.SimpleJavaFileObject;
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    @author Andrew Thompson
    @version 2008-06-13
    public class GuiCompiler extends JPanel {
      /** Instance of the compiler used for all compilations. */
      JavaCompiler compiler;
      /** The name of the public class.  For 'HelloWorld.java',
      this would be 'HelloWorld'. */
      JTextField name;
      /** The source code to be compiled. */
      JTextArea sourceCode;
      /** Errors and messages from the compiler. */
      JTextArea output;
      JButton compile;
      static int pad = 5;
      GuiCompiler() {
        super( new BorderLayout(pad,pad) );
        setBorder( new EmptyBorder(7,4,7,4) );
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      the GUI input elements during the work. */
      class SourceCompilation extends SwingWorker<String, Object> {
        @Override
        public String doInBackground() {
          return compileCode();
        @Override
        protected void done() {
          try {
            enableComponents(true);
          } catch (Exception ignore) {
      /** Construct the GUI. */
      public void initGui() {
        JPanel input = new JPanel( new BorderLayout(pad,pad) );
        Font outputFont = new Font("Monospaced",Font.PLAIN,12);
        sourceCode = new JTextArea("Paste code here..", 15, 60);
        sourceCode.setFont( outputFont );
        input.add( new JScrollPane( sourceCode ),
          BorderLayout.CENTER );
        sourceCode.select(0,sourceCode.getText().length());
        JPanel namePanel = new JPanel(new BorderLayout(pad,pad));
        name = new JTextField(15);
        name.setToolTipText("Name of the public class");
        namePanel.add( name, BorderLayout.CENTER );
        namePanel.add( new JLabel("Class name"), BorderLayout.WEST );
        input.add( namePanel, BorderLayout.NORTH );
        compile = new JButton( "Compile" );
        compile.addActionListener( new ActionListener() {
            public void actionPerformed(ActionEvent ae) {
              (new SourceCompilation()).execute();
        input.add( compile, BorderLayout.SOUTH );
        this.add( input, BorderLayout.CENTER );
        output = new JTextArea("", 5, 40);
        output.setFont( outputFont );
        output.setEditable(false);
        this.add( new JScrollPane( output ), BorderLayout.SOUTH );
      /** Compile the code in the source input area. */
      public String compileCode() {
        output.setText( "Compiling.." );
        enableComponents(false);
        String compResult = null;
        if (compiler==null) {
          compiler = ToolProvider.getSystemJavaCompiler();
        if ( compiler!=null ) {
          String code = sourceCode.getText();
          String sourceName = name.getText().trim();
          if ( sourceName.toLowerCase().endsWith(".java") ) {
            sourceName = sourceName.substring(
              0,sourceName.length()-5 );
          JavaSourceFromString javaString = new JavaSourceFromString(
            sourceName,
            code);
          ArrayList<JavaSourceFromString> al =
            new ArrayList<JavaSourceFromString>();
          al.add( javaString );
          ByteArrayOutputStream baos = new ByteArrayOutputStream();
          OutputStreamWriter osw = new OutputStreamWriter( baos );
          JavaCompiler.CompilationTask task = compiler.getTask(
            osw,
            null,
            null,
            null,
            null,
            al);
          boolean success = task.call();
          output.setText( baos.toString().replaceAll("\t", "  ") );
          compResult = "Compiled without errors: " + success;
          output.append( compResult );
          output.setCaretPosition(0);
        } else {
          output.setText( "No compilation possible - sorry!" );
          JOptionPane.showMessageDialog(this,
            "No compiler is available to this runtime!",
            "Compiler not found",
            JOptionPane.ERROR_MESSAGE
          System.exit(-1);
        return compResult;
      /** Set the main GUI input components enabled
      according to the enable flag. */
      public void enableComponents(boolean enable) {
        compile.setEnabled(enable);
        name.setEnabled(enable);
        sourceCode.setEnabled(enable);
      public static void main(String[] args) throws Exception {
        Runnable r = new Runnable() {
          public void run() {
            JFrame f = new JFrame("SSCCE text based compiler");
            f.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
            GuiCompiler compilerPane = new GuiCompiler();
            compilerPane.initGui();
            f.getContentPane().add(compilerPane);
            f.pack();
            f.setMinimumSize( f.getSize() );
            f.setLocationRelativeTo(null);
            f.setVisible(true);
        EventQueue.invokeLater(r);
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    * This example is from the JavaDocs for JavaCompiler.
    class JavaSourceFromString extends SimpleJavaFileObject {
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        by this file object
      * @param code the source code for the compilation unit
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      JavaSourceFromString(String name, String code) {
        super(URI.create(
          "string:///" +
          name.replace('.','/') +
          Kind.SOURCE.extension),
          Kind.SOURCE);
        this.code = code;
      @Override
      public CharSequence getCharContent(boolean ignoreEncodingErrors) {
        return code;
    }Edit 1:
    Added..
            f.setMinimumSize( f.getSize() );Edited by: AndrewThompson64 on Jun 13, 2008 12:24 PM
    Edited by: AndrewThompson64 on Jun 23, 2008 5:54 AM

    kevjava wrote: Some things that I think would be useful:
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    Good idea, and since the line count is only a handful of lines of code to implement, I took that option. See the [line count|http://pscode.org/stbc/help.html#linecount] section of the (new) [STBC Help|http://pscode.org/stbc/help.html] page for more details. (Insert plaintiff whining about the arbitrary limits set - here).
    I considered adding line length checking, but the [Text Width Checker|http://pscode.org/twc/] ('sold separately') already has that covered, and I would prefer to keep this tool more specific to compilation, which leads me to..
    kevjava wrote: 1. A button to run the code, to see that it demonstrates the problem that you wish for the forum to solve...
    Interesting idea, but I think that is better suited to a more full blown (but still relatively simple) GUId compiler. I am not fully decided that running a class is unsuited to STBC, but I am more likely to implement a clickable list of compilation errors, than a 'run' button.
    On the other hand I am thinking the clickable error list is also better suited to an altogether more abled compiler, so don't hold your breath to see either in the STBC.
    You might note I have not bothered to update the screenshots to show the line count label. That is because I am still considering error lists and running code, and open to further suggestion (not because I am just slack!). If the screenshots update to include the line count but nothing else, take that as a sign. ;-)
    Thanks for your ideas. The line count alone is worth a few Dukes.

  • Problem Launching Java Applet with Plug-in: Version 1.4.2_01

    Hello out there:
    I recently installed j2re-1.4.2_01 on my home computer but have been unable to access Web sites emmploying JAva applets. The following is an email exchange with Jeff Hall of Lowell Observatory, manager of an educational site hosted by Lowell, trying to resolve my problem. The messages are better understood if read in reverse order.
    I'm hoping that someone will recognize the source of my problem and can recommmend a solution. I would appreciate any help offered.
    Thanks,
    Mike Coucke
    Hi Jeff:
    Well, I guess the problem lies with me somewhere. Here's my answer/status to your questions/suggestions:
    1) I'm using MS Windows Me version 4.90.3000
    2) I do have the directory C:\Windows\.jpi_cache\jar\, but the only thing in it is an empty folder labeled "1.0". The file LP.jar does not exist anywhere on my hard drive.
    3) I tried several game sites that utilized Java applets and got the same results: the Java cup in the upper left corner followed a few seconds later by the red "X". So, evidently the problem is somewhere on my end.
    I'm going to post our email exchanges in a Java Users Forum managed by Sun to see if anyone out there can solve my problem. However, if you have any more suggestions, I'll be glad to try them.
    Thanks for the help.
    Mike Coucke
    [email protected]
    ----- Original Message -----
    From: "Jeffrey Hall" <[email protected]>
    To: "'Mike Coucke'" <[email protected]>
    Sent: Friday, September 05, 2003 1:02 PM
    Subject: RE: Registration with Lowell Education Online
    Mike,
    Rats! What version of Windows are you using? It's a little strange to
    see the user directory set to C:\Windows; if you're using XP, I'd expect
    it to be something like C:\Documents and Settings\Mike Coucke. In any
    event, the output that is of concern is these two lines:
    java.lang.ClassNotFoundException: LPRemote.class
    Caused by: java.net.UnknownHostException: proxy
    It looks like your browser is not finding our server's IP when it comes
    time to download the necessary Java code.
    LPRemote.class is the fundamental code that runs LOPARC, and your
    browser should be downloading it automatically when you click connect.
    LPRemote.class is stored along with a bunch of other classes in a file
    called "LP.jar" that you download from our server. So, if you go to C:
    in Windows Explorer and do a file search for LP.jar, you should find it.
    On my machine, it's stored in a directory called ".jpi_cache\jar\" in my
    user home directory. Let me know if you have this file, or the
    jpi-cache directory.
    One other thing you might try is going to a different site that you know
    uses Java applets -- I think some of the online game rooms at Yahoo use
    Java. See if other sites that use Java load correctly. Then we'll know
    if it's our server specifically, or a more general problem on your end.
    Jeff Hall
    Lowell Observatory
    Hello Jeff:
    I still have the Java "blues". I followed your instructions, but am still unable to launch a LOPARC session. After an initial failure, I uninstalled all three Java versions I had (1.4.0, 1.4.1, 1.4.2), then reinstalled 1.4.2_01 from the Sun website.
    Now, when I try to launch LOPARC, I initially get a blank window with the Java cup in the upper left corner. After about 20 seconds, the cup changes to a red "X". During those 20 seconds, the following appear in the IE message bar at the bottom of the window: "Applet LPRemote notinited" (their spelling) which changes to "Loading Java Applet Failed..." when the red "X" appears.
    Following is a copy of the log from my Java Console during all of this:
    Java(TM) Plug-in: Version 1.4.2_01
    Using JRE version 1.4.2_01 Java HotSpot(TM) Client VM
    User home directory = C:\WINDOWS
    Proxy Configuration: Manual Configuration
    Proxy: http=proxy,https=proxy,ftp=proxy,gopher=proxy
    Proxy Overrides:
    c: clear console window
    f: finalize objects on finalization queue
    g: garbage collect
    h: display this help message
    l: dump classloader list
    m: print memory usage
    o: trigger logging
    p: reload proxy configuration
    q: hide console
    r: reload policy configuration
    s: dump system properties
    t: dump thread list
    v: dump thread stack
    x: clear classloader cache
    0-5: set trace level to <n>
    load: class LPRemote.class not found.
    java.lang.ClassNotFoundException: LPRemote.class
    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 sun.applet.AppletClassLoader.loadCode(Unknown Source)
    at sun.applet.AppletPanel.createApplet(Unknown Source)
    at sun.plugin.AppletViewer.createApplet(Unknown Source)
    at sun.applet.AppletPanel.runLoader(Unknown Source)
    at sun.applet.AppletPanel.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
    Caused by: java.net.UnknownHostException: proxy
    at java.net.PlainSocketImpl.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at sun.net.NetworkClient.doConnect(Unknown Source)
    at sun.plugin.net.protocol.http.HttpClient.doConnect(Unknown Source)
    at sun.net.www.http.HttpClient.openServer(Unknown Source)
    at sun.net.www.http.HttpClient$3.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.net.www.http.HttpClient.privilegedOpenServer(Unknown Source)
    at sun.net.www.http.HttpClient.openServer(Unknown Source)
    at sun.net.www.http.HttpClient.<init>(Unknown Source)
    at sun.net.www.http.HttpClient.<init>(Unknown Source)
    at sun.plugin.net.protocol.http.HttpClient.<init>(Unknown Source)
    at sun.plugin.net.protocol.http.HttpClient.New(Unknown Source)
    at sun.plugin.net.protocol.http.HttpURLConnection.createConnection(Unknown Source)
    at sun.plugin.net.protocol.http.HttpURLConnection.connect(Unknown Source)
    at sun.plugin.net.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
    at java.net.HttpURLConnection.getResponseCode(Unknown Source)
    at sun.applet.AppletClassLoader.getBytes(Unknown Source)
    at sun.applet.AppletClassLoader.access$100(Unknown Source)
    at sun.applet.AppletClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    ... 10 more
    I followed this up by executing the following three console commands:
    "dump system properties"
    "dump classholder list"
    "dump thread list"
    and obtained the following listings:
    Dump system properties ...
    acl.read = +
    acl.read.default =
    acl.write = +
    acl.write.default =
    application.home = C:\PROGRA~1\JAVA\J2RE14~1.2_0
    awt.toolkit = sun.awt.windows.WToolkit
    browser = sun.plugin
    browser.vendor = Sun Microsystems, Inc.
    browser.version = 1.1
    deployment.javaws.cache.dir = C:\WINDOWS\.javaws\cache
    deployment.javaws.jre.0.enabled = true
    deployment.javaws.jre.0.location = http://java.sun.com/products/autodl/j2se
    deployment.javaws.jre.0.osarch = x86
    deployment.javaws.jre.0.osname = Windows
    deployment.javaws.jre.0.path = C:\Program Files\Java\j2re1.4.2_01\bin\javaw.exe
    deployment.javaws.jre.0.platform = 1.4
    deployment.javaws.jre.0.product = 1.4.2_01
    deployment.javaws.jre.0.registered = true
    deployment.javaws.version = javaws-1.4.2_01
    deployment.system.cacerts = C:\PROGRA~1\JAVA\J2RE14~1.2_0\lib\security\cacerts
    deployment.system.home = C:\WINDOWS\Sun\Java\Deployment
    deployment.system.jssecacerts = C:\PROGRA~1\JAVA\J2RE14~1.2_0\lib\security\cacerts
    deployment.system.profile = C:\WINDOWS
    deployment.system.security.policy = file:/C:/WINDOWS/Sun/Java/Deployment/security/java.policy
    deployment.user.cachedir = C:\WINDOWS\Application Data\Sun\Java\Deployment\cache
    deployment.user.certs = C:\WINDOWS\Application Data\Sun\Java\Deployment\security\deployment.certs
    deployment.user.extdir = C:\WINDOWS\Application Data\Sun\Java\Deployment\ext
    deployment.user.home = C:\WINDOWS\Application Data\Sun\Java\Deployment
    deployment.user.jssecerts = C:\WINDOWS\Application Data\Sun\Java\Deployment\security\deployment.jssecerts
    deployment.user.logdir = C:\WINDOWS\Application Data\Sun\Java\Deployment\log
    deployment.user.profile = C:\WINDOWS\Application Data
    deployment.user.security.policy = file:/C:/WINDOWS/Application%20Data/Sun/Java/Deployment/security/java.policy
    deployment.user.tmpdir = C:\WINDOWS\Application Data\Sun\Java\Deployment\cache\tmp
    file.encoding = Cp1252
    file.encoding.pkg = sun.io
    file.separator = \
    file.separator.applet = true
    http.agent = Mozilla/4.0 (Windows Me 4.90)
    http.auth.serializeRequests = true
    https.protocols = SSLv3,SSLv2Hello
    java.awt.graphicsenv = sun.awt.Win32GraphicsEnvironment
    java.awt.printerjob = sun.awt.windows.WPrinterJob
    java.class.path = C:\PROGRA~1\JAVA\J2RE14~1.2_0\classes
    java.class.version = 48.0
    java.class.version.applet = true
    java.endorsed.dirs = C:\PROGRAM FILES\JAVA\J2RE1.4.2_01\lib\endorsed
    java.ext.dirs = C:\PROGRAM FILES\JAVA\J2RE1.4.2_01\lib\ext
    java.home = C:\PROGRA~1\JAVA\J2RE14~1.2_0
    java.io.tmpdir = C:\WINDOWS\TEMP\
    java.library.path = D:\PROGRAM FILES\INTERNET EXPLORER 6;.;C:\WINDOWS\SYSTEM;C:\WINDOWS;D:\PROGRA~1\INTERN~1;;C:\WINDOWS;C:\WINDOWS\COMMAND
    java.protocol.handler.pkgs = sun.plugin.net.protocol|sun.plugin.net.protocol
    java.runtime.name = Java(TM) 2 Runtime Environment, Standard Edition
    java.runtime.version = 1.4.2_01-b06
    java.specification.name = Java Platform API Specification
    java.specification.vendor = Sun Microsystems Inc.
    java.specification.version = 1.4
    java.util.prefs.PreferencesFactory = java.util.prefs.WindowsPreferencesFactory
    java.vendor = Sun Microsystems Inc.
    java.vendor.applet = true
    java.vendor.url = http://java.sun.com/
    java.vendor.url.applet = true
    java.vendor.url.bug = http://java.sun.com/cgi-bin/bugreport.cgi
    java.version = 1.4.2_01
    java.version.applet = true
    java.vm.info = mixed mode
    java.vm.name = Java HotSpot(TM) Client VM
    java.vm.specification.name = Java Virtual Machine Specification
    java.vm.specification.vendor = Sun Microsystems Inc.
    java.vm.specification.version = 1.0
    java.vm.vendor = Sun Microsystems Inc.
    java.vm.version = 1.4.2_01-b06
    javaplugin.maxHeapSize = 96m
    javaplugin.nodotversion = 142_01
    javaplugin.proxy.config.list = http=proxy,https=proxy,ftp=proxy,gopher=proxy
    javaplugin.proxy.config.type = manual
    javaplugin.version = 1.4.2_01
    javaplugin.vm.options = -Djava.class.path=C:\PROGRA~1\JAVA\J2RE14~1.2_0\classes -Xbootclasspath/a:C:\PROGRA~1\JAVA\J2RE14~1.2_0\lib\plugin.jar -Xmx96m -Djavaplugin.maxHeapSize=96m -Xverify:remote -Djavaplugin.version=1.4.2_01 -Djavaplugin.nodotversion=142_01 -Dbrowser=sun.plugin -DtrustProxy=true -Dapplication.home=C:\PROGRA~1\JAVA\J2RE14~1.2_0 -Djava.protocol.handler.pkgs=sun.plugin.net.protocol
    line.separator = \r\n
    line.separator.applet = true
    os.arch = x86
    os.arch.applet = true
    os.name = Windows Me
    os.name.applet = true
    os.version = 4.90
    os.version.applet = true
    package.restrict.access.netscape = false
    package.restrict.access.sun = true
    package.restrict.definition.java = true
    package.restrict.definition.netscape = true
    package.restrict.definition.sun = true
    path.separator = ;
    path.separator.applet = true
    sun.arch.data.model = 32
    sun.boot.class.path = C:\PROGRAM FILES\JAVA\J2RE1.4.2_01\lib\rt.jar;C:\PROGRAM FILES\JAVA\J2RE1.4.2_01\lib\i18n.jar;C:\PROGRAM FILES\JAVA\J2RE1.4.2_01\lib\sunrsasign.jar;C:\PROGRAM FILES\JAVA\J2RE1.4.2_01\lib\jsse.jar;C:\PROGRAM FILES\JAVA\J2RE1.4.2_01\lib\jce.jar;C:\PROGRAM FILES\JAVA\J2RE1.4.2_01\lib\charsets.jar;C:\PROGRAM FILES\JAVA\J2RE1.4.2_01\classes;C:\PROGRA~1\JAVA\J2RE14~1.2_0\lib\plugin.jar
    sun.boot.library.path = C:\PROGRAM FILES\JAVA\J2RE1.4.2_01\bin
    sun.cpu.endian = little
    sun.cpu.isalist = pentium i486 i386
    sun.io.unicode.encoding = UnicodeLittle
    sun.java2d.fontpath =
    sun.net.client.defaultConnectTimeout = 120000
    sun.os.patch.level =
    trustProxy = true
    user.country = US
    user.dir = C:\WINDOWS\Desktop
    user.home = C:\WINDOWS
    user.language = en
    user.name = Michael G. Coucke
    user.timezone =
    user.variant =
    Done.
    Dump classloader list ...
    codebase=http://kraken.lowell.edu/, key=http://kraken.lowell.edu/,IONJava/classes/ion_16.jar,IONJava/classes/LP.jar, zombie=false, cache=true, refcount=1, info=sun.plugin.ClassLoaderInfo@109de5b
    Done.
    Dump thread list ...
    Group main,ac=11,agc=2,pri=10
    main,5,alive
    AWT-Windows,6,alive,dameon
    AWT-Shutdown,5,alive
    Java2D Disposer,10,alive,dameon
    AWT-EventQueue-0,6,alive
    Group Plugin Thread Group,ac=3,agc=0,pri=10
    Main Console Writer,6,alive
    AWT-EventQueue-1,6,alive
    TimerQueue,5,alive,dameon
    Group http://kraken.lowell.edu/-threadGroup,ac=2,agc=0,pri=4
    thread applet-LPRemote.class,4,alive
    AWT-EventQueue-2,4,alive
    Done.
    I'm not a Java expert, so this may be more information than you ever wanted to see.
    Once again, I hope that you can help. My experience has been that I usually have some obscure option set incorrectly and that causes me great grief.
    Thanks fo your help,
    Mike Coucke
    [email protected]
    ----- Original Message -----
    From: "Jeffrey Hall" <[email protected]>
    To: "'Mike Coucke'" <[email protected]>
    Sent: Thursday, September 04, 2003 11:48 AM
    Subject: RE: Registration with Lowell Education Online
    Hi Mike,
    Try it now. I think this problem has arisen because Sun just
    released a new version of the Plug-in (1.4.2), and when we released the
    public beta of LOPARC, only one relevant version (1.4.0) was available
    and the LOPARC code was written to look for that by default. I have
    just recoded the relevant routines so they should now cause your browser
    to simply pick up the latest 1.4 version of the Plug-in you have
    installed, whatever it is. I "broke" Java on my machine to replicate
    your problem, and the code I inserted today did fix it. Hopefully it
    will have the same effect for you. I am running IE 6 and plugin
    1.4.2_01 (as accessed via Tools->Sun Java Console).
    One broader problem: some (non-LOPARC-specific) users on the Sun
    forums have reported the "JRE collision" you are seeing when multiple
    versions of the Plug-in are installed on the same machine. So if the
    fix I made to our code doesn't work, one option would be to uninstall
    all Java components from your computer and do a fresh install of the
    latest runtime environment.
    Let me know how/if this works. Thanks for the feedback and for your
    patience.
    Best regards,
    Jeff Hall
    Lowell Observatory
    -----Original Message-----
    From: Mike Coucke [mailto:[email protected]]
    Sent: Wednesday, September 03, 2003 6:30 PM
    To: [email protected]
    Subject: Re: Registration with Lowell Education Online
    Hello Jeff:
    So far, I have been unable to launch a LOPARC session. I repeatedly
    get the following error message:
    "Exception: java.lang.ClassNotFoundException: LPRemote.class"
    My browser is MS Internet Explorer version 6.0.2800.1106 Initially I was
    using Java Plug-In version 1.4.1 and received the error message. I went
    to the Sun website and downloaded/installed Java Plug-In version 1.4.2
    and still get the message.
    Before I try to launch LOPARC, I can select Tools->Sun Java Console from
    IE's pull down menu to check my Java Plug-In version. When I try to
    launch LOPARC, I get the following message:
    "Applet(s) in this HTML page requires a version of Java different from
    the one the browser is currently using. In order to run the applet(s)
    in this HTML page, a new browser session is required, press 'Yes' to
    start a new browser session." If I select 'No', I get the following
    message: "Java Plug-in detected JRE collission"
    If I select 'Yes', a new browser window opens and then I get the first
    message above.
    Can you help?
    Mike Coucke
    [email protected]
    ----- Original Message -----
    From: <[email protected]>
    To: <[email protected]>
    Sent: Monday, September 01, 2003 5:30 PM
    Subject: Registration with Lowell Education Online
    September 1, 2003
    Dear Michael Coucke:
    Thank you for registering with Lowell Observatory's online education
    site. We hope you enjoy using it and visit regularly as we continue to
    expand its features and capabilities. This is a one-time welcoming
    email.
    For your records, your user ID is xxxxx, and your password is #########.
    You'll need to supply these each time you log in.
    This site gives you access to research-grade equipment including a 16"
    telescope, CCD detector, and image processing software. Our online
    archive of data is now available 24/7. The telescope will be opening to
    our onsite users in May, and on select nights to the Internet at large
    in June.
    We have designed this site so you don't need a huge monitor or a
    supercomputer to use it. All pages are viewable on screens running at
    800x600 resolution or higher. To use LOPARC, you'll need a Java-enabled
    browser with the Java 1.4 plug-in installed. If you don't have the
    plug-in, you'll be prompted to download it the first time you attempt to
    connect. This is an admittedly large (9 MB) but one-time-only download.
    This site works correctly under Internet Explorer version 5 or higher.
    If you use Netscape, you must be running version 6 or higher, and
    display or applet behavior anomalies may occur.
    If at any time you can't connect to our server, simply try again later.
    We do experience several power outages each year, particularly during
    Flagstaff's summer thunderstorm season. Our server is fully protected
    and backed up, and can be quickly brought back on line, but any active
    user sessions will be lost. Thanks for your patience during these
    inevitable downtimes.
    Your questions, comments, suggestions, and bug reports about this site
    are always welcome. On behalf of the LOPARC development team, thanks
    for signing up!
    Jeffrey Hall
    Assistant Research Scientist
    Associate Director, Education and Special Programs
    Lowell Observatory
    Flagstaff, Arizona

    Hi Mike,
    I see this in your logs:
    Java(TM) Plug-in: Version 1.4.2_01
    Using JRE version 1.4.2_01 Java HotSpot(TM) Client VM
    User home directory = C:\WINDOWS
    Proxy Configuration: Manual Configuration
    Proxy: http=proxy,https=proxy,ftp=proxy,gopher=proxy
    Proxy Overrides:
    I just helped my Dad set up his computer with a new
    cable modem, and had the situation where we couldn't
    access any secure Web sites. The cable folks had us
    disable the proxy. It looks like the error message is
    saying it can't find your proxy server, and the logs
    you posted say that you've decided to configure your
    proxy manually, rather than using the settings from
    IE (which is how mine is set up in the plugin
    control panel.)
    Could that be the problem?
    --Steve                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           

  • Closing the browser with a single click from form

    Hi All,
    Will u please help me anyone how to close the browser with a single click pressing exit button or closing the cross buton.
    Arif

    Always start with a search on this forum
    Solution
    Instructions:
    1. Using an html or text editor, create an html file with the following code:
    <html>
    <head>
    <script type="text/javascript">
    // Create a ref to the original method
    var windowClose = window.close;
    // Re-implement window.open
    window.close = function ()
    window.open("","_self");
    windowClose();
    </script>
    </head>
    <body onload="window.close()">
    <!-- The following text added in case users have disabled Java Scripting -->
    <!-- or if browser fails to close for some other reason. -->
    Your browser or system settings have prevented this window from closing.
    In order to ensure the highest level of security,
    please close/exit this browser session immediately.
    </body>
    </html> 2. Save the html file with the following name: close.htm
    3. Store this file on the middle tier, in a directory which has an associated virtual path configured in the HTTP Server. You can use a pre-existing path or create a new one. For example, in version 10.1.2 you could copy the html file to this directory:
    ORACLE_HOME\tools\web\html
    The above virtually maps to the following by default:
    /forms/html/
    For information on creating a virtual path for the HTTP Server, please refer to the HTTP Server Administrator's Guide.
    4. In the Forms application, choose the desired trigger where you would like to execute the closing of the browser. Remember that by executing this code, the application will be ungracefully terminated, therefore it is recommended that the following code only be entered in the Forms POST-FORM trigger.
    web.show_document ('/forms/html/close.htm','_self');
    5. Compile and run the form.
    Upon exiting the form, the web browser will call close.htm resulting in the browser closing.
    This has been successfully tested using IE7 on XP-SP3. Although this code will work with other browsers, for example FireFox 3, a configuration change in FF must be made in order for it to work correctly.
    Manual Steps Required for FireFox:
    1. Open one instance of the FireFox browser.
    2. In the address bar, enter the following and press Enter on the keyboard:
    about:config
    3. In the list presented, locate the following parameter:
    dom.allow_scripts_to_close_windows
    4. Double-click on this parameter to set its value to TRUE
    5. Exit the browser
    Edited by: BaiG on Mar 30, 2010 12:23 PM

  • Passing multiple URL parameters with same name

    Hi,
    I have a question which is not entirely related to Java. But although its related HTTP calls, so I thought I might get some ideas here.
    Background:
    I am making HTTP URL call from SAP ABAP code. Its pretty much similar to Java (creating URL connection, setting HTTP headers, connecting, receiving response and everything)
    For example,
    http://service_server:8080/a7/extension.services.SearchRequirements.a7x?RequestStatus=CR&RequestStatus=RR
    Now, this service_server runs a query to database where it uses both these values of "RequestStatus" to form 'OR' condition for a field.
    Issue:
    When I run this URL from browser, it shows XML response containing results for both values. In short, this is the ideal response.
    (I am using getParameterValues(string) at service_server to read multiple values for same parameter)
    But when I see response in SAP system, I see that it is returning data for only one value of 'RequestStatus'.
    I checked the logs of service_server, and I see that it has received only one parameter, not two.
    Question:
    It seems like SAP systems web server is truncating both parameters with same name and passing just one of them to outside server(??)
    Is there any configuration at Web Server side or any HTTP headers to be set so as to avoid this?
    Can anybody suggest something on this?

    I managed to resolve this issue by using HTTP 'Post' method to send the data.
    CALL METHOD CL_HTTP_CLIENT=>CREATE_BY_URL
        EXPORTING
          URL                = L_URL
        IMPORTING
          CLIENT             = L_HTTP_CLIENT
        EXCEPTIONS
          ARGUMENT_NOT_FOUND = 1
          PLUGIN_NOT_ACTIVE  = 2
          INTERNAL_ERROR     = 3
          OTHERS             = 4 .
    "STEP-2 :  AUTHENTICATE HTTP CLIENT
    CALL METHOD L_HTTP_CLIENT->AUTHENTICATE
      EXPORTING
        USERNAME             = 'name'
        PASSWORD             = 'password'.
    "STEP-3 :  SET HTTP HEADERS
    CALL METHOD L_HTTP_CLIENT->REQUEST->SET_HEADER_FIELD
          EXPORTING NAME  = 'Accept'
                    VALUE = 'text/xml'.
    CALL METHOD L_HTTP_CLIENT->REQUEST->SET_HEADER_FIELD
        EXPORTING NAME  = '~request_method'
                   VALUE = 'POST' .
    CALL METHOD L_HTTP_CLIENT->REQUEST->SET_CONTENT_TYPE
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