Does Java have a built in XML parser?

Hi, does the JDK come with a built in XML parser? If so, from what version onwards is this available?
I'm looking at this article here:
http://www.devx.com/xml/Article/16921/0/page/3
So, I presume the answer is yes, Java comes with JAXP. I'm using JDK 1.6, does that come packaged with JAXP?
Thanks.
Rupert

rupertlssmith wrote:
Hi, does the JDK come with a built in XML parser? If so, from what version onwards is this available?
I'm looking at this article here:
http://www.devx.com/xml/Article/16921/0/page/3
You need to add three jar files--jaxp.jar, crimson.jar, and xalan.jar--to your CLASSPATH.xalan and jaxp have been in the Sun Java SDK since at least 1.4.
crimson existed in the Sun Java 1.4 SDK apparently replaced by xerces from Sun Java 1.5 SDK.

Similar Messages

  • A website I need to get information from returns a message stating that I do not have the most recent XML parser, and suggests using IE 5.5 or newer. This, of course, I have no intention of doing. Any suggestions?

    This is supposed to be an animated Help page. However, when Itry to click on it, it gives me the message:
    Your browser does not seem to have the most updated XML parser.
    Please use Microsoft Internet Explorer 5.5 or up for PointingTheWay features.
    System Can Not Proceed any further.

    Unfortunately, it's a member-only page, with member id and password required. I'm trying to contact their IT dept., but without much luck, so far!

  • Java.lang.NoClassDefFoundError at oracle.xml.parser.v2.NonValidatingParser

    Hi All,
    While accessing the JPDK provider URL that is integrated with PeopleSoft application, I am getting the following error
    500 Internal Server Error
    java.lang.NoClassDefFoundError at oracle.xml.parser.v2.NonValidatingParser.(NonValidatingParser.java:172) at oracle.xml.parser.v2.XMLParser.(XMLParser.java:174) at oracle.xml.parser.v2.DOMParser.(DOMParser.java:92) at oracle.portal.utils.xml.v2.XMLUtil.getParser(Unknown Source) at oracle.portal.utils.xml.v2.XMLUtil.parseDocument(Unknown Source) at oracle.portal.provider.v2.http.DefaultProviderLoader.parseRegistry(Unknown Source) at oracle.portal.provider.v2.http.DefaultProviderLoader.getProviderDefinition(Unknown Source) at oracle.portal.provider.v2.http.DefaultProviderLoader.validate(Unknown Source) at oracle.webdb.provider.v2.adapter.soapV1.ProviderAdapter.validate(Unknown Source) at oracle.webdb.provider.v2.adapter.soapV1.ProviderAdapter.showTestPage(Unknown Source) at oracle.webdb.provider.v2.adapter.soapV1.ProviderAdapter.handleHttp(Unknown Source) 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:585) at oracle.webdb.provider.v2.adapter.SOAPServlet.doHTTPCall(Unknown Source) at oracle.webdb.provider.v2.adapter.SOAPServlet.service(Unknown Source) at javax.servlet.http.HttpServlet.service(HttpServlet.java:856) at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:64) at com.peoplesoft.pt.portlet.jpdk.provider.PSProviderFilter.doFilter(PSProviderFilter.java:78) at com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:15) at com.peoplesoft.pt.portlet.logging.DynamicFilter.doFilter(DynamicFilter.java:83) at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:619) at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:368) at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:866) at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:448) at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:302) at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:190) at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260) at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303) at java.lang.Thread.run(Thread.java:595)
    As our application uses AXIS to do WebServices, we have removed the default oracle xml shared library by using remove-inherited in orion-application.xml. In addition, we package our own xerces in our application ear file. It looks like PDK is looking for oracle xml parser resulting in the NoClassDefFoundError exception.
    The above exception is thrown if I access the JDPK provider URL after accessing our application.
    However, if I restart the OC4J and ccess the JPDK provider URL without accessing our application, I get the following error
    500 Internal Server Error
    oracle.classloader.util.AnnotatedLinkageError: class oracle.xml.parser.schema.XSDNode cannot access its superinterface oracle.xml.parser.schema.XSDComponent Invalid class: oracle.xml.parser.schema.XSDNode Loader: oracle.cache:10.1.3 Code-Source: /D:/Oracle/OAS101310/OracleAS_1/LIB/xschema.jar Configuration: (ignore manifest Class-Path) in META-INF/boot.xml in D:\Oracle\OAS101310\OracleAS_1\j2ee\home\oc4j.jar Dependent class: oracle.xml.parser.v2.XMLNode Loader: PeopleSoft2.web.pspc:0.0.0 Code-Source: /D:/Oracle/OAS101310/OracleAS_1/j2ee/PeopleSoft2/applications/PeopleSoft2/pspc/WEB-INF/lib/xmlparserv2.jar Configuration: WEB-INF/lib/ directory in D:\Oracle\OAS101310\OracleAS_1\j2ee\PeopleSoft2\applications\PeopleSoft2\pspc\WEB-INF\lib at oracle.classloader.PolicyClassLoader.findLocalClass (PolicyClassLoader.java:1462) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/pcl.jar (from system property java.class.path), by sun.misc.Launcher$AppClassLoader@26795951] at oracle.classloader.SearchPolicy$FindLocal.getClass (SearchPolicy.java:167) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/pcl.jar (from system property java.class.path), by sun.misc.Launcher$AppClassLoader@26795951] at oracle.classloader.SearchSequence.getClass (SearchSequence.java:119) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/pcl.jar (from system property java.class.path), by sun.misc.Launcher$AppClassLoader@26795951] at oracle.classloader.SearchPolicy.loadClass (SearchPolicy.java:645) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/pcl.jar (from system property java.class.path), by sun.misc.Launcher$AppClassLoader@26795951] at oracle.classloader.SearchPolicy$CheckSharedLibraries.getClass (SearchPolicy.java:396) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/pcl.jar (from system property java.class.path), by sun.misc.Launcher$AppClassLoader@26795951] at oracle.classloader.SearchSequence.getClass (SearchSequence.java:119) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/pcl.jar (from system property java.class.path), by sun.misc.Launcher$AppClassLoader@26795951] at oracle.classloader.PolicyClassLoader.internalLoadClass (PolicyClassLoader.java:1674) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/pcl.jar (from system property java.class.path), by sun.misc.Launcher$AppClassLoader@26795951] at oracle.classloader.PolicyClassLoader.loadClass (PolicyClassLoader.java:1635) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/pcl.jar (from system property java.class.path), by sun.misc.Launcher$AppClassLoader@26795951] at oracle.classloader.PolicyClassLoader.loadClass (PolicyClassLoader.java:1620) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/pcl.jar (from system property java.class.path), by sun.misc.Launcher$AppClassLoader@26795951] at java.lang.ClassLoader.loadClassInternal (ClassLoader.java:319) [jre bootstrap, by jre.bootstrap:1.5.0_06] at oracle.xml.parser.v2.XMLNode. (XMLNode.java:4123) [D:/Oracle/OAS101310/OracleAS_1/j2ee/PeopleSoft2/applications/PeopleSoft2/pspc/WEB-INF/lib/xmlparserv2.jar (from WEB-INF/lib/ directory in D:\Oracle\OAS101310\OracleAS_1\j2ee\PeopleSoft2\applications\PeopleSoft2\pspc\WEB-INF\lib), by PeopleSoft2.web.pspc:0.0.0] at oracle.xml.parser.v2.NonValidatingParser. (NonValidatingParser.java:172) [D:/Oracle/OAS101310/OracleAS_1/j2ee/PeopleSoft2/applications/PeopleSoft2/pspc/WEB-INF/lib/xmlparserv2.jar (from WEB-INF/lib/ directory in D:\Oracle\OAS101310\OracleAS_1\j2ee\PeopleSoft2\applications\PeopleSoft2\pspc\WEB-INF\lib), by PeopleSoft2.web.pspc:0.0.0] at oracle.xml.parser.v2.XMLParser. (XMLParser.java:174) [D:/Oracle/OAS101310/OracleAS_1/j2ee/PeopleSoft2/applications/PeopleSoft2/pspc/WEB-INF/lib/xmlparserv2.jar (from WEB-INF/lib/ directory in D:\Oracle\OAS101310\OracleAS_1\j2ee\PeopleSoft2\applications\PeopleSoft2\pspc\WEB-INF\lib), by PeopleSoft2.web.pspc:0.0.0] at oracle.xml.parser.v2.DOMParser. (DOMParser.java:92) [D:/Oracle/OAS101310/OracleAS_1/j2ee/PeopleSoft2/applications/PeopleSoft2/pspc/WEB-INF/lib/xmlparserv2.jar (from WEB-INF/lib/ directory in D:\Oracle\OAS101310\OracleAS_1\j2ee\PeopleSoft2\applications\PeopleSoft2\pspc\WEB-INF\lib), by PeopleSoft2.web.pspc:0.0.0] at oracle.portal.utils.xml.v2.XMLUtil.getParser (Unknown source file) [D:/Oracle/OAS101310/OracleAS_1/j2ee/PeopleSoft2/applications/PeopleSoft2/pspc/WEB-INF/lib/ptlshare.jar (from WEB-INF/lib/ directory in D:\Oracle\OAS101310\OracleAS_1\j2ee\PeopleSoft2\applications\PeopleSoft2\pspc\WEB-INF\lib), by PeopleSoft2.web.pspc:0.0.0] at oracle.portal.utils.xml.v2.XMLUtil.parseDocument (Unknown source file) [D:/Oracle/OAS101310/OracleAS_1/j2ee/PeopleSoft2/applications/PeopleSoft2/pspc/WEB-INF/lib/ptlshare.jar (from WEB-INF/lib/ directory in D:\Oracle\OAS101310\OracleAS_1\j2ee\PeopleSoft2\applications\PeopleSoft2\pspc\WEB-INF\lib), by PeopleSoft2.web.pspc:0.0.0] at oracle.portal.provider.v2.http.DefaultProviderLoader.parseRegistry (Unknown source file) [D:/Oracle/OAS101310/OracleAS_1/j2ee/PeopleSoft2/applications/PeopleSoft2/pspc/WEB-INF/lib/pdkjava.jar (from WEB-INF/lib/ directory in D:\Oracle\OAS101310\OracleAS_1\j2ee\PeopleSoft2\applications\PeopleSoft2\pspc\WEB-INF\lib), by PeopleSoft2.web.pspc:0.0.0] at oracle.portal.provider.v2.http.DefaultProviderLoader.getProviderDefinition (Unknown source file) [D:/Oracle/OAS101310/OracleAS_1/j2ee/PeopleSoft2/applications/PeopleSoft2/pspc/WEB-INF/lib/pdkjava.jar (from WEB-INF/lib/ directory in D:\Oracle\OAS101310\OracleAS_1\j2ee\PeopleSoft2\applications\PeopleSoft2\pspc\WEB-INF\lib), by PeopleSoft2.web.pspc:0.0.0] at oracle.portal.provider.v2.http.DefaultProviderLoader.validate (Unknown source file) [D:/Oracle/OAS101310/OracleAS_1/j2ee/PeopleSoft2/applications/PeopleSoft2/pspc/WEB-INF/lib/pdkjava.jar (from WEB-INF/lib/ directory in D:\Oracle\OAS101310\OracleAS_1\j2ee\PeopleSoft2\applications\PeopleSoft2\pspc\WEB-INF\lib), by PeopleSoft2.web.pspc:0.0.0] at oracle.webdb.provider.v2.adapter.soapV1.ProviderAdapter.validate (Unknown source file) [D:/Oracle/OAS101310/OracleAS_1/j2ee/PeopleSoft2/applications/PeopleSoft2/pspc/WEB-INF/lib/pdkjava.jar (from WEB-INF/lib/ directory in D:\Oracle\OAS101310\OracleAS_1\j2ee\PeopleSoft2\applications\PeopleSoft2\pspc\WEB-INF\lib), by PeopleSoft2.web.pspc:0.0.0] at oracle.webdb.provider.v2.adapter.soapV1.ProviderAdapter.showTestPage (Unknown source file) [D:/Oracle/OAS101310/OracleAS_1/j2ee/PeopleSoft2/applications/PeopleSoft2/pspc/WEB-INF/lib/pdkjava.jar (from WEB-INF/lib/ directory in D:\Oracle\OAS101310\OracleAS_1\j2ee\PeopleSoft2\applications\PeopleSoft2\pspc\WEB-INF\lib), by PeopleSoft2.web.pspc:0.0.0] at oracle.webdb.provider.v2.adapter.soapV1.ProviderAdapter.handleHttp (Unknown source file) [D:/Oracle/OAS101310/OracleAS_1/j2ee/PeopleSoft2/applications/PeopleSoft2/pspc/WEB-INF/lib/pdkjava.jar (from WEB-INF/lib/ directory in D:\Oracle\OAS101310\OracleAS_1\j2ee\PeopleSoft2\applications\PeopleSoft2\pspc\WEB-INF\lib), by PeopleSoft2.web.pspc:0.0.0] at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native method) [unknown, by unknown] at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:39) [unknown, by unknown] at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:25) [unknown, by unknown] at java.lang.reflect.Method.invoke (Method.java:585) [unknown, by unknown] at oracle.webdb.provider.v2.adapter.SOAPServlet.doHTTPCall (Unknown source file) [D:/Oracle/OAS101310/OracleAS_1/j2ee/PeopleSoft2/applications/PeopleSoft2/pspc/WEB-INF/lib/pdkjava.jar (from WEB-INF/lib/ directory in D:\Oracle\OAS101310\OracleAS_1\j2ee\PeopleSoft2\applications\PeopleSoft2\pspc\WEB-INF\lib), by PeopleSoft2.web.pspc:0.0.0] at oracle.webdb.provider.v2.adapter.SOAPServlet.service (Unknown source file) [D:/Oracle/OAS101310/OracleAS_1/j2ee/PeopleSoft2/applications/PeopleSoft2/pspc/WEB-INF/lib/pdkjava.jar (from WEB-INF/lib/ directory in D:\Oracle\OAS101310\OracleAS_1\j2ee\PeopleSoft2\applications\PeopleSoft2\pspc\WEB-INF\lib), by PeopleSoft2.web.pspc:0.0.0] at javax.servlet.http.HttpServlet.service (HttpServlet.java:856) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/servlet.jar (from (ignore manifest Class-Path) in META-INF/boot.xml in D:\Oracle\OAS101310\OracleAS_1\j2ee\home\oc4j.jar), by api:1.4.0] at com.evermind.server.http.ResourceFilterChain.doFilter (ResourceFilterChain.java:64) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/oc4j-internal.jar (from in META-INF/boot.xml in D:\Oracle\OAS101310\OracleAS_1\j2ee\home\oc4j.jar), by oc4j:10.1.3] at com.peoplesoft.pt.portlet.jpdk.provider.PSProviderFilter.doFilter (PSProviderFilter.java:78) [D:/Oracle/OAS101310/OracleAS_1/j2ee/PeopleSoft2/applications/PeopleSoft2/pspc/WEB-INF/classes/ (from WEB-INF/classes/ in D:\Oracle\OAS101310\OracleAS_1\j2ee\PeopleSoft2\applications\PeopleSoft2\pspc\WEB-INF\classes), by PeopleSoft2.web.pspc:0.0.0] at com.evermind.server.http.EvermindFilterChain.doFilter (EvermindFilterChain.java:15) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/oc4j-internal.jar (from in META-INF/boot.xml in D:\Oracle\OAS101310\OracleAS_1\j2ee\home\oc4j.jar), by oc4j:10.1.3] at com.peoplesoft.pt.portlet.logging.DynamicFilter.doFilter (DynamicFilter.java:83) [D:/Oracle/OAS101310/OracleAS_1/j2ee/PeopleSoft2/applications/PeopleSoft2/pspc/WEB-INF/classes/ (from WEB-INF/classes/ in D:\Oracle\OAS101310\OracleAS_1\j2ee\PeopleSoft2\applications\PeopleSoft2\pspc\WEB-INF\classes), by PeopleSoft2.web.pspc:0.0.0] at com.evermind.server.http.ServletRequestDispatcher.invoke (ServletRequestDispatcher.java:619) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/oc4j-internal.jar (from in META-INF/boot.xml in D:\Oracle\OAS101310\OracleAS_1\j2ee\home\oc4j.jar), by oc4j:10.1.3] at com.evermind.server.http.ServletRequestDispatcher.forwardInternal (ServletRequestDispatcher.java:368) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/oc4j-internal.jar (from in META-INF/boot.xml in D:\Oracle\OAS101310\OracleAS_1\j2ee\home\oc4j.jar), by oc4j:10.1.3] at com.evermind.server.http.HttpRequestHandler.doProcessRequest (HttpRequestHandler.java:866) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/oc4j-internal.jar (from in META-INF/boot.xml in D:\Oracle\OAS101310\OracleAS_1\j2ee\home\oc4j.jar), by oc4j:10.1.3] at com.evermind.server.http.HttpRequestHandler.processRequest (HttpRequestHandler.java:448) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/oc4j-internal.jar (from in META-INF/boot.xml in D:\Oracle\OAS101310\OracleAS_1\j2ee\home\oc4j.jar), by oc4j:10.1.3] at com.evermind.server.http.AJPRequestHandler.run (AJPRequestHandler.java:302) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/oc4j-internal.jar (from in META-INF/boot.xml in D:\Oracle\OAS101310\OracleAS_1\j2ee\home\oc4j.jar), by oc4j:10.1.3] at com.evermind.server.http.AJPRequestHandler.run (AJPRequestHandler.java:190) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/oc4j-internal.jar (from in META-INF/boot.xml in D:\Oracle\OAS101310\OracleAS_1\j2ee\home\oc4j.jar), by oc4j:10.1.3] at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run (ServerSocketReadHandler.java:260) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/oc4j-internal.jar (from in META-INF/boot.xml in D:\Oracle\OAS101310\OracleAS_1\j2ee\home\oc4j.jar), by oc4j:10.1.3] at oracle.oc4j.network.ServerSocketAcceptHandler.procClientSocket (ServerSocketAcceptHandler.java:239) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/oc4j-internal.jar (from in META-INF/boot.xml in D:\Oracle\OAS101310\OracleAS_1\j2ee\home\oc4j.jar), by oc4j:10.1.3] at oracle.oc4j.network.ServerSocketAcceptHandler.access$700 (ServerSocketAcceptHandler.java:34) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/oc4j-internal.jar (from in META-INF/boot.xml in D:\Oracle\OAS101310\OracleAS_1\j2ee\home\oc4j.jar), by oc4j:10.1.3] at oracle.oc4j.network.ServerSocketAcceptHandler$AcceptHandlerHorse.run (ServerSocketAcceptHandler.java:880) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/oc4j-internal.jar (from in META-INF/boot.xml in D:\Oracle\OAS101310\OracleAS_1\j2ee\home\oc4j.jar), by oc4j:10.1.3] at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run (ReleasableResourcePooledExecutor.java:303) [D:/Oracle/OAS101310/OracleAS_1/j2ee/home/lib/oc4j-internal.jar (from in META-INF/boot.xml in D:\Oracle\OAS101310\OracleAS_1\j2ee\home\oc4j.jar), by oc4j:10.1.3] at java.lang.Thread.run (Thread.java:595) [jre bootstrap, by jre.bootstrap:1.5.0_06]

    On further test, If I let the default oracle xml parser be loaded, then I do not get the the exception.
    I have removed the following lines from orion-application.xml
         <imported-shared-libraries>
              <remove-inherited name="oracle.xml"/>
         </imported-shared-libraries>
    Now, If I access the JPDK provider URL
    http://ple-fjunod.peoplesoft.com:9820/pspc/providers/psprovider/ps/EMPLOYEE
    I get the excepted page
    Congratulations! You have successfully reached your Provider's Test Page.
    Recognizing Portlets...
    Recognizing component versions...
    ptlshare.jar version: 10.1.3.2.0
    pdkjava.jar version: 10.1.3.2.0
    Can someone please tell me that if I remove the inherited default oracle XML parser using remove-inherited tag in orion-application.xml, how do I make the JPDK use my own packaged xerces XML parser.
    Thanks

  • Why does Java have such a large footprint?

    I've been curious about this topic for a while, but I haven't ever looked into this to any depth. I also posted this to stackoverflow but haven't gotten any solid responses so far:
    http://stackoverflow.com/questions/1107991/why-does-java-have-such-a-large-footprint
    Java - or at least Sun's Hotspot JVM - has long had a reputation for having a very large memory footprint. What exactly is it about the JVM that gives it this reputation? I'd be interested in a detailed breakdown: how much memory goes to the runtime? (The JIT? The GC/memory management? The classloader?) Anything related to "auxiliary" APIs like JNI/JVMTI? The standard libraries? (Which parts get how much?) Any other major components?
    I realize that this may not be straightforward to answer without a concrete application plus VM configuration, so just to narrow things down at least somewhat: I'm primarily interested in default/typical VM configurations, and in a baseline console "Hello world" app as well as any real-world desktop or server app. (I'm suspecting that a substantial part of the JVM's footprint is largely independent of the app itself, and it is in this part that I'd like to zoom in, ideally.)
    I have a couple of other closely related questions:
    Other similar technology, such as .NET/mono, don't exhibit nearly the same footprint. Why is this the case?
    I've read somewhere on the intarwebs that a large portion of the footprint is due simply to the size of the standard libraries. If this is the case, then why is so much of the standard libraries being loaded up front?
    Are there any efforts (JSRs, whatever) to tame the memory footprint? The closest thing I've come across is a project to reduce the on-disk footprint of the JVM [1] and to modularize the standard library [2].
    I'm sure that the footprint has varied over the past decade or so with every new version of Java. Are there any specific numbers/charts chronicling precisely how the JVM's footprint has changed?
    [1] http://blogs.sun.com/jtc/entry/reduced_footprint_java_se_bringing
    [2] http://blogs.sun.com/theplanetarium/entry/project_jigsaw_modularizing_jdk_7

    yangzhang wrote:
    I've been curious about this topic for a while, but I haven't ever looked into this to any depth. I also posted this to stackoverflow but haven't gotten any solid responses so far:
    http://stackoverflow.com/questions/1107991/why-does-java-have-such-a-large-footprint
    Java - or at least Sun's Hotspot JVM - has long had a reputation for having a very large memory footprint. What exactly is it about the JVM that gives it this reputation? I'd be interested in a detailed breakdown: how much memory goes to the runtime? (The JIT? The GC/memory management? The classloader?) Anything related to "auxiliary" APIs like JNI/JVMTI? The standard libraries? (Which parts get how much?) Any other major components?
    Presumably versus some other VM. I would suppose the fact that much of the VM is written in java has something to do with it.
    I realize that this may not be straightforward to answer without a concrete application plus VM configuration, so just to narrow things down at least somewhat: I'm primarily interested in default/typical VM configurations, and in a baseline console "Hello world" app as well as any real-world desktop or server app. (I'm suspecting that a substantial part of the JVM's footprint is largely independent of the app itself, and it is in this part that I'd like to zoom in, ideally.)
    I have a couple of other closely related questions:
    Other similar technology, such as .NET/mono, don't exhibit nearly the same footprint. Why is this the case?
    Not sure I agree with that. What size do you see with a .Net app that uses 3.0/3.5?
    I've read somewhere on the intarwebs that a large portion of the footprint is due simply to the size of the standard libraries. If this is the case, then why is so much of the standard libraries being loaded up front?
    Good question. There is a feature that allows multiple VMs to use the same memory footprint version of the loaded libraries. That is a new feature and it isn't clear to me if it covers the entire API. I do not know if that is dynamically built.

  • The data object "FP_FORMOUTPUT" does not have a component called "XML"

    Hello All,
    When i tried to run a simple report with ADOBE form i got this message:
    The data object "FP_FORMOUTPUT" does not have a component called "XML"
    I saw that the field XML is really missing in structure fpformoutput!
    Also in structure sfpoutputparams the field GETXML is missing!
    Is there a note to fix this?
    The system status is:
    Database system      ORACLE
    Release              10.2.0.2.0
    SAP_BASIS     700     0012     SAPKB70012     SAP Basis Component
    SAP_ABA     700     0012     SAPKA70012     Cross-Application Component
    ST-PI     2008_1_700     0000          -     SAP Solution Tools Plug-In
    PI_BASIS     2005_1_700     0012     SAPKIPYJ7C     PI_BASIS 2005_1_700
    SAP_BW     700     0013     SAPKW70013     SAP NetWeaver BI 7.0
    SAP_AP     700     0009     SAPKNA7009     SAP Application Platform
    SAP_HR     600     0016     SAPKE60016     Human Resources
    SAP_APPL     600     0009     SAPKH60009     Logistics and Accounting
    EA-IPPE     400     0009     SAPKGPID09     SAP iPPE
    EA-HR     600     0016     SAPKGPHD16     SAP Enterprise Extension HR
    EA-GLTRADE     600     0009     SAPKGPGD09     SAP Enterprise Extension Global Trade
    EA-PS     600     0009     SAPKGPPD09     SAP Enterprise Extension Public Services
    EA-RETAIL     600     0009     SAPKGPRD09     SAP Enterprise Extension Retail
    EA-FINSERV     600     0009     SAPKGPFD09     SAP Enterprise Extension Financial Services
    EA-DFPS     600     0009     SAPKGPDD09     SAP Enterprise Extension Defense Forces & Public Security
    EA-APPL     600     0009     SAPKGPAD09     SAP Enterprise Extension PLM, SCM, Financials
    FINBASIS     600     0009     SAPK-60009INFINBASIS     Fin. Basis
    ECC-DIMP     600     0009     SAPK-60009INECCDIMP     DIMP
    ERECRUIT     600     0009     SAPK-60009INERECRUIT     E-Recruiting
    FI-CA     600     0009     SAPK-60009INFICA     FI-CA
    FI-CAX     600     0009     SAPK-60009INFICAX     FI-CA Extended
    INSURANCE     600     0009     SAPK-60009ININSURANC     SAP Insurance
    IS-CWM     600     0009     SAPK-60009INISCWM     Industry Solution Catch Weight Management
    IS-H     600     0009     SAPK-60009INISH     SAP Healthcare
    IS-M     600     0009     SAPK-60009INISM     SAP MEDIA
    IS-OIL     600     0009     SAPK-60009INISOIL     IS-OIL
    IS-PS-CA     600     0009     SAPK-60009INISPSCA     IS-PUBLIC SECTOR CONTRACT ACCOUNTING
    IS-UT     600     0009     SAPK-60009INISUT     SAP Utilities/Telecommunication
    LSOFE     600     0009     SAPK-60009INLSOFE     SAP Learning Solution Front-End
    SEM-BW     600     0009     SAPKGS6009     SEM-BW: Strategic Enterprise Management
    ST-A/PI     01L_ECC600     0000          -     Application Servicetools for ECC 600
    Thank you all In advance,
    Eran FOX

    Hello Otto,
    Thank you for your reply...
    If i enter se11 to see the structure of FPFORMOUTPUT for example... i get the following structure:
    PDF     FPCONTENT     RAWSTRING     0     0     Form Processing: Content from XFT, XFD, PDF, and so on
    PDL     FPCONTENT     RAWSTRING     0     0     Form Processing: Content from XFT, XFD, PDF, and so on
    PAGES     FPPAGECOUNT     INT4     10     0     Form Processing: Number of Pages Created
    LANGU     LANGU     LANG     1     0     Language Key
    can you see any XML field here?
    This is OLD as you said - but how can i get the proper one?
    Thanks again,
    Eran

  • For the iPod shuffle does it have in built speakers or do u have to have earphones to listen to music?

    for the iPod shuffle does it have in built speakers or do u have to have earphones to listen to music?

    Yes. The iPod Classic does not have a built in external speaker.  On the 5G Nano and iOS Devices have built in external speakers.
    B-rock

  • Does Java have APIs for statistical analysis?

    Hi Java Experts
    I want to develop a Java program which can help users to analyse their stock investment. Here I have two questions
    1) How can I wrap my finished Java program as a XXX.exe? So users can install my program by executing it
    2) Does Java have any APIs for statistical analysis?
    Thank you very much for your help!
    ViolaIT

    1) How can I wrap my finished Java program as a
    XXX.exe? So users can install my program by
    executing ithttp://onesearch.sun.com/search/onesearch/index.jsp?qt=java+exe&qp_name=null&subCat=siteforumid%3Ajava54&site=dev&dftab=siteforumid%3Ajava54&chooseCat=javaall&col=developer-forums

  • Does java have picture box?

    I am newbie in building gui with java. just migrate from using vsstudio.
    I see people use matisee to dragndrop things
    but what i want to know now. is
    does java have picturebox? and can i set location of each component like
    x.setLocatioN(x,y) on form?
    ummm, .. is it good to use matisee?
    thks

    Hi. What do your initials stand for, Tom Hanks Kevin Susan?
    You can use a JLabel to show a graphic in Java. Use its setIcon method.
    You can use setBounds to position components, but you must set the layout of the parent component to null using setLayout. However, it is recommended not to do this, as it isn't very flexible. Instead, learn about and use [url java.sun.com/docs/books/tutorial/uiswing/layout/using.html]layout managers.
    I've never used Matisse.

  • Does java have any class that wrap byte[]

    my program would send byte[] to remote host;I know byte cant be serializabled;
    so I would a class wrap byte[],I cant write new class,because remote host maybe havent this class,
    I want to kown if java have a class that wrap byte[];

    The iPlanet Application Server 6.5 has a very nasty bug when you're using RMI/IIOP: if you want to reference an EJB in a stand-alone application. you can't use reliably methods that take parameters whose type is an array of primitives (like byte[]). The EJB can be called correctly in a Web application or by another EJB, but you can't use them in stand-alone apps.
    It is a product that is simultaneously a C++ application server and a Java application server, and has lots and lots of native code. It uses a specially modified JRE 1.3 for its own use.
    Sun dumped it (too buggy, too complex, too slow and very oddball) and used the J2EE SDK RI code instead to write the new versions of Sun ONE Application Server and Sun Java System Application Server.

  • Does anyone have a good server.xml file for tomcat?

    I am trying to link apache and tomcat on a RedHat 9 computer. I previously posted a message stating that I could not get tomcat to "automagically" make the configuration files (mod_jk.conf-auto) that all the manuals promised it would. However, I found that my problem was the lack of an ApacheConfig tag in the server.xml file. After looking at my server.xml file, I found that it was much more simplistic than I would hoped = it did not have enough comments or commented out options. It had none of the directives that the manuals said it included by default.
    In short, does anyone who has apache and tomcat linked have a server.xml file that I can look at so that I can figure out what I must add to mine to get tomcat working with apache? I would greatly appreciate it if you could copy and paste the whole thing here.
    Thank you very much in advance.
    Edward S. Rice

    Hi!
    I am having the Apache-Tomcat4.0 version installed on a Win2000 machine. I am pasting here my server.xml. Hope it will be useful to you. I even didnot do much modifications to my server.xml except for adding a context.
    Please come back if problem persists.
    <!-- Example Server Configuration File -->
    <!-- Note that component elements are nested corresponding to their
    parent-child relationships with each other -->
    <!-- A "Server" is a singleton element that represents the entire JVM,
    which may contain one or more "Service" instances. The Server
    listens for a shutdown command on the indicated port.
    Note: A "Server" is not itself a "Container", so you may not
    define subcomponents such as "Valves" or "Loggers" at this level.
    -->
    <Server port="8005" shutdown="SHUTDOWN" debug="0">
    <!-- A "Service" is a collection of one or more "Connectors" that share
    a single "Container" (and therefore the web applications visible
    within that Container). Normally, that Container is an "Engine",
    but this is not required.
    Note: A "Service" is not itself a "Container", so you may not
    define subcomponents such as "Valves" or "Loggers" at this level.
    -->
    <!-- Define the Tomcat Stand-Alone Service -->
    <Service name="Tomcat-Standalone">
    <!-- A "Connector" represents an endpoint by which requests are received
    and responses are returned. Each Connector passes requests on to the
    associated "Container" (normally an Engine) for processing.
    By default, a non-SSL HTTP/1.1 Connector is established on port 8080.
    You can also enable an SSL HTTP/1.1 Connector on port 8443 by
    following the instructions below and uncommenting the second Connector
    entry. SSL support requires the following steps (see the SSL Config
    HOWTO in the Tomcat 4.0 documentation bundle for more detailed
    instructions):
    * Download and install JSSE 1.0.2 or later, and put the JAR files
    into "$JAVA_HOME/jre/lib/ext".
    * Execute:
    %JAVA_HOME%\bin\keytool -genkey -alias tomcat -keyalg RSA (Windows)
    $JAVA_HOME/bin/keytool -genkey -alias tomcat -keyalg RSA (Unix)
    with a password value of "changeit" for both the certificate and
    the keystore itself.
    By default, DNS lookups are enabled when a web application calls
    request.getRemoteHost(). This can have an adverse impact on
    performance, so you can disable it by setting the
    "enableLookups" attribute to "false". When DNS lookups are disabled,
    request.getRemoteHost() will return the String version of the
    IP address of the remote client.
    -->
    <!-- Define a non-SSL HTTP/1.1 Connector on port 8080 -->
    <Connector className="org.apache.catalina.connector.http.HttpConnector"
    port="8080" minProcessors="5" maxProcessors="75"
    enableLookups="true" redirectPort="8443"
    acceptCount="10" debug="0" connectionTimeout="60000"/>
    <!-- Note : To disable connection timeouts, set connectionTimeout value
    to -1 -->
    <!-- Define an SSL HTTP/1.1 Connector on port 8443 -->
    <!--
    <Connector className="org.apache.catalina.connector.http.HttpConnector"
    port="8443" minProcessors="5" maxProcessors="75"
    enableLookups="true"
         acceptCount="10" debug="0" scheme="https" secure="true">
    <Factory className="org.apache.catalina.net.SSLServerSocketFactory"
    clientAuth="false" protocol="TLS"/>
    </Connector>
    -->
    <!-- Define an AJP 1.3 Connector on port 8009 -->
    <!--
    <Connector className="org.apache.ajp.tomcat4.Ajp13Connector"
    port="8009" minProcessors="5" maxProcessors="75"
    acceptCount="10" debug="0"/>
    -->
    <!-- Define a Proxied HTTP/1.1 Connector on port 8081 -->
    <!-- See proxy documentation for more information about using this. -->
    <!--
    <Connector className="org.apache.catalina.connector.http.HttpConnector"
    port="8081" minProcessors="5" maxProcessors="75"
    enableLookups="true"
    acceptCount="10" debug="0" connectionTimeout="60000"
    proxyPort="80"/>
    -->
    <!-- Define a non-SSL HTTP/1.0 Test Connector on port 8082 -->
    <!--
    <Connector className="org.apache.catalina.connector.http10.HttpConnector"
    port="8082" minProcessors="5" maxProcessors="75"
    enableLookups="true" redirectPort="8443"
    acceptCount="10" debug="0"/>
    -->
    <!-- An Engine represents the entry point (within Catalina) that processes
    every request. The Engine implementation for Tomcat stand alone
    analyzes the HTTP headers included with the request, and passes them
    on to the appropriate Host (virtual host). -->
    <!-- Define the top level container in our container hierarchy -->
    <Engine name="Standalone" defaultHost="localhost" debug="0">
    <!-- The request dumper valve dumps useful debugging information about
    the request headers and cookies that were received, and the response
    headers and cookies that were sent, for all requests received by
    this instance of Tomcat. If you care only about requests to a
    particular virtual host, or a particular application, nest this
    element inside the corresponding <Host> or <Context> entry instead.
    For a similar mechanism that is portable to all Servlet 2.3
    containers, check out the "RequestDumperFilter" Filter in the
    example application (the source for this filter may be found in
    "$CATALINA_HOME/webapps/examples/WEB-INF/classes/filters").
    Request dumping is disabled by default. Uncomment the following
    element to enable it. -->
    <!--
    <Valve className="org.apache.catalina.valves.RequestDumperValve"/>
    -->
    <!-- Global logger unless overridden at lower levels -->
    <Logger className="org.apache.catalina.logger.FileLogger"
    prefix="catalina_log." suffix=".txt"
    timestamp="true"/>
    <!-- Because this Realm is here, an instance will be shared globally -->
    <Realm className="org.apache.catalina.realm.MemoryRealm" />
    <!-- Replace the above Realm with one of the following to get a Realm
    stored in a database and accessed via JDBC -->
    <!--
    <Realm className="org.apache.catalina.realm.JDBCRealm" debug="99"
    driverName="org.gjt.mm.mysql.Driver"
    connectionURL="jdbc:mysql://localhost/authority?user=test;password=test"
    userTable="users" userNameCol="user_name" userCredCol="user_pass"
    userRoleTable="user_roles" roleNameCol="role_name" />
    -->
    <!--
    <Realm className="org.apache.catalina.realm.JDBCRealm" debug="99"
    driverName="oracle.jdbc.driver.OracleDriver"
    connectionURL="jdbc:oracle:thin:@ntserver:1521:ORCL?user=scott;password=tiger"
    userTable="users" userNameCol="user_name" userCredCol="user_pass"
    userRoleTable="user_roles" roleNameCol="role_name" />
    -->
    <!--
    <Realm className="org.apache.catalina.realm.JDBCRealm" debug="99"
    driverName="sun.jdbc.odbc.JdbcOdbcDriver"
    connectionURL="jdbc:odbc:CATALINA"
    userTable="users" userNameCol="user_name" userCredCol="user_pass"
    userRoleTable="user_roles" roleNameCol="role_name" />
    -->
    <!-- Define the default virtual host -->
    <Host name="localhost" debug="0" appBase="webapps" unpackWARs="true">
    <!-- Normally, users must authenticate themselves to each web app
    individually. Uncomment the following entry if you would like
    a user to be authenticated the first time they encounter a
    resource protected by a security constraint, and then have that
    user identity maintained across all web applications contained
    in this virtual host. -->
    <!--
    <Valve className="org.apache.catalina.authenticator.SingleSignOn"
    debug="0"/>
    -->
    <!-- Access log processes all requests for this virtual host. By
    default, log files are created in the "logs" directory relative to
    $CATALINA_HOME. If you wish, you can specify a different
    directory with the "directory" attribute. Specify either a relative
    (to $CATALINA_HOME) or absolute path to the desired directory.
    -->
    <Valve className="org.apache.catalina.valves.AccessLogValve"
    directory="logs" prefix="localhost_access_log." suffix=".txt"
    pattern="common"/>
    <!-- Logger shared by all Contexts related to this virtual host. By
    default (when using FileLogger), log files are created in the "logs"
    directory relative to $CATALINA_HOME. If you wish, you can specify
    a different directory with the "directory" attribute. Specify either a
    relative (to $CATALINA_HOME) or absolute path to the desired
    directory.-->
    <Logger className="org.apache.catalina.logger.FileLogger"
    directory="logs" prefix="localhost_log." suffix=".txt"
         timestamp="true"/>
    <!-- Define properties for each web application. This is only needed
    if you want to set non-default properties, or have web application
    document roots in places other than the virtual host's appBase
    directory. -->
    <!-- Tomcat Root Context -->
    <!--
    <Context path="" docBase="ROOT" debug="0"/>
    -->
              <Context path="/vijay" docBase="D:\Java\servlets" debug="0"/>
    <!-- Tomcat Manager Context -->
    <Context path="/manager" docBase="manager"
    debug="0" privileged="true"/>
    <!-- Tomcat Examples Context -->
    <Context path="/examples" docBase="examples" debug="0"
    reloadable="true">
    <Logger className="org.apache.catalina.logger.FileLogger"
    prefix="localhost_examples_log." suffix=".txt"
         timestamp="true"/>
    <Ejb name="ejb/EmplRecord" type="Entity"
    home="com.wombat.empl.EmployeeRecordHome"
    remote="com.wombat.empl.EmployeeRecord"/>
    <!-- PersistentManager: Uncomment the section below to test Persistent
              Sessions.
    saveOnRestart: If true, all active sessions will be saved
    to the Store when Catalina is shutdown, regardless of
    other settings. All Sessions found in the Store will be
    loaded on startup. Sessions past their expiration are
    ignored in both cases.
    maxActiveSessions: If 0 or greater, having too many active
    sessions will result in some being swapped out. minIdleSwap
    limits this. -1 means unlimited sessions are allowed.
    0 means sessions will almost always be swapped out after
    use - this will be noticeably slow for your users.
    minIdleSwap: Sessions must be idle for at least this long
    (in seconds) before they will be swapped out due to
    maxActiveSessions. This avoids thrashing when the site is
    highly active. -1 or 0 means there is no minimum - sessions
    can be swapped out at any time.
    maxIdleSwap: Sessions will be swapped out if idle for this
    long (in seconds). If minIdleSwap is higher, then it will
    override this. This isn't exact: it is checked periodically.
    -1 means sessions won't be swapped out for this reason,
    although they may be swapped out for maxActiveSessions.
    If set to >= 0, guarantees that all sessions found in the
    Store will be loaded on startup.
    maxIdleBackup: Sessions will be backed up (saved to the Store,
    but left in active memory) if idle for this long (in seconds),
    and all sessions found in the Store will be loaded on startup.
    If set to -1 sessions will not be backed up, 0 means they
    should be backed up shortly after being used.
    To clear sessions from the Store, set maxActiveSessions, maxIdleSwap,
    and minIdleBackup all to -1, saveOnRestart to false, then restart
    Catalina.
    -->
              <!--
    <Manager className="org.apache.catalina.session.PersistentManager"
    debug="0"
    saveOnRestart="true"
    maxActiveSessions="-1"
    minIdleSwap="-1"
    maxIdleSwap="-1"
    maxIdleBackup="-1">
    <Store className="org.apache.catalina.session.FileStore"/>
    </Manager>
              -->
    <Environment name="maxExemptions" type="java.lang.Integer"
    value="15"/>
    <Parameter name="context.param.name" value="context.param.value"
    override="false"/>
    <Resource name="jdbc/EmployeeAppDb" auth="SERVLET"
    type="javax.sql.DataSource"/>
    <ResourceParams name="jdbc/EmployeeAppDb">
    <parameter><name>user</name><value>sa</value></parameter>
    <parameter><name>password</name><value></value></parameter>
    <parameter><name>driverClassName</name>
    <value>org.hsql.jdbcDriver</value></parameter>
    <parameter><name>driverName</name>
    <value>jdbc:HypersonicSQL:database</value></parameter>
    </ResourceParams>
    <Resource name="mail/Session" auth="Container"
    type="javax.mail.Session"/>
    <ResourceParams name="mail/Session">
    <parameter>
    <name>mail.smtp.host</name>
    <value>localhost</value>
    </parameter>
    </ResourceParams>
    </Context>
    </Host>
    </Engine>
    </Service>
    <!-- The MOD_WEBAPP connector is used to connect Apache 1.3 with Tomcat 4.0
    as its servlet container. Please read the README.txt file coming with
    the WebApp Module distribution on how to build it.
    (Or check out the "jakarta-tomcat-connectors/webapp" CVS repository)
    To configure the Apache side, you must ensure that you have the
    "ServerName" and "Port" directives defined in "httpd.conf". Then,
    lines like these to the bottom of your "httpd.conf" file:
    LoadModule webapp_module libexec/mod_webapp.so
    WebAppConnection warpConnection warp localhost:8008
    WebAppDeploy examples warpConnection /examples/
    The next time you restart Apache (after restarting Tomcat, if needed)
    the connection will be established, and all applications you make
    visible via "WebAppDeploy" directives can be accessed through Apache.
    -->
    <!-- Define an Apache-Connector Service -->
    <Service name="Tomcat-Apache">
    <Connector className="org.apache.catalina.connector.warp.WarpConnector"
    port="8008" minProcessors="5" maxProcessors="75"
    enableLookups="true"
    acceptCount="10" debug="0"/>
    <!-- Replace "localhost" with what your Apache "ServerName" is set to -->
    <Engine className="org.apache.catalina.connector.warp.WarpEngine"
    name="Apache" debug="0" appBase="webapps">
    <!-- Global logger unless overridden at lower levels -->
    <Logger className="org.apache.catalina.logger.FileLogger"
    prefix="apache_log." suffix=".txt"
    timestamp="true"/>
    <!-- Because this Realm is here, an instance will be shared globally -->
    <Realm className="org.apache.catalina.realm.MemoryRealm" />
    </Engine>
    </Service>
    </Server>

  • Built in XMl Parser for 11g Exp Edi

    Hi
    I am new to using 11g express edition. I have not used before any express editions.
    I would like to use the Xpress edition for parsing an XML file of 3MB size and put it in the relational table(approximaletly 5 tables).
    Appreciate if this a possibility with express edition.
    Thanks

    Hi,
    XML-support is avaliable in XE. You can use the compelte XML API, e.g. DBMS_XMLPARSER (part of XDB, if I'm not mixing this up), as documented [url http://download.oracle.com/docs/cd/E11882_01/appdev.112/e16760/d_xmlpar.htm#ARPLS375]here.
    -Udo

  • Why does Java have so much trouble with deleting files

    So, I've been doing alot more code on the file-level and have been noticing that Java is really terrible at deleting files. This should be rather straightforward, but the delete method can fail in so many ways, it's unbelievable. Even with taking special care to close all streams, it will sometimes just not do it, or even return a "Yes I've deleted it" result and the file is still there! (deleteOnExit() suffers the same affliction)
    This problem is even scuttling the otherwise trusty Ant, which is really annoying. Ever seen this? "BUILD FAILED: Could not delete 'myproject.jar'" So any Ant-driven automated build-and-test process can fail because of this super-avoidable error. (We have to code a pre-build-jar-deletion shell script, which is annoying when jars are added/deleted/renamed for whatever reason.)
    Does anyone know the reason for this? I'm really curious.
    Maybe, in 1.5, they will come out with "File.crushAndDestroyWithMercilessPrejudice()". I'd use it all of the time! :)

    I had the same problem when I was working with JAI. I had about a half million images that I made a viewer for, which would allow our users to do away with microfiche. Project worked great, but the files wouldn't delete off the user box (Win2K). I checked everything and they just would not delete--windows would not acknowlege the resources had been released by Java.
    I finally took a lesson from MS developers and said: "It's not a bug, it's a feature!" I wrote it into the manual that it was a cache feature and would speed-up access to the images, yet delete the old ones (which it did, any images that were not accessed during the session would delete just fine, while any that were accessed would still be there next time for local access rather than hitting the network for them. The cache turned out to be one of the great features of the application.
    On the other hand, I've not had any problems deleting files from Linux.

  • What Net Capabilities Does Java Have?

    I have learned two other programming languages before learning Java and now I have learned a lot of the syntax of Java. I need to know if this is possible:
    Is there a way for me to get an HTML document from the internet from a specified URL on an HTTP server? If this is possible, can I search through it, possibly with FileReader? If Java does have a function that I could use to do this could someone please tell me what it is and what class it's from?
    thanks,
    lateralus

    The URL class will be helpful. It is described here:
    http://java.sun.com/javase/6/docs/api/java/net/URL.html
    URL's openStream() method might be a good place to start. There is an example of
    its use at "The Java Developers Almanac 1.4" here:
    http://www.exampledepot.com/egs/java.net/ReadFromURL.html?l=rel
    And there is lots on Networking in Sun's Tutorial:
    http://java.sun.com/docs/books/tutorial/networking/index.html
    These three locations could well serve as your first port of call with many "Is there a
    way..." type questions.

  • Does Java have asynchronized I/O?

    Hello everyone,
    I am wondering whether Java has asynchronized I/O (whether built-in core Java SDK or 3rd party release), which is similar as select or poll in UNIX. Current read/write will be blocked when underlying stream is not ready. For example, when retrieving data from remote machine, we will be blocked if the remote machine will not response immediately.
    Thanks in advance,
    George

    Thanks kajbj,
    Your reply is very helpful. I have found most ofthem
    are dealing with NIO. IIRC, NIO is for JDK 1.4 or
    later version JDK, but I am using JDK 1.3. I am
    wondering what asynchronized I/O SDK could I use.There are third party libararies for asynch IO that
    works with JDK 1.3, but they all require native code
    so your application won't be platform independent. I
    would upgrade to JDK 1.4 instead of using such
    libraries.
    /KajYour reply is very helpful. I am considering upgrade my application to JDK 1.4. Meanwhile, could you recommend some third party libraries for asynchronized I/O that works with JDK 1.3? I want to compare this solution with JDK 1.4 solution.
    regards,
    George

  • Does Java have an object model for the actual .java files?

    OK, you know how you can use the Document Object Model (DOM) in JavaScript or PHP to access and modify specific parts of an HTML document? Is there anything similar for .java files? Can I load a .java file into some kind of Java Code Object Model (JCOM?) and then manipulate that code as if it were an object.
    Note: I am not asking how to instantiate and use a regular object as defined by the .java file. I am wondering about modifying the actual .java file itself as an object that represents the actual text of the code in the .java file.

    GrantSR wrote:
    Not the code, per se, but the classes they define... Yessum, most certainly: ASM, among others.
    Also Google [java parser|http://www.google.com.au/search?q=java+parser]... one of them might do what you're after.
    So, one would parse the Java code into XML using one of these many and
    varied parsers, then access that XML via the DOM? Well, I guess a two
    step process is good enough.
    Thanks for your help.
    No wuckers!
    But I don't know if I did much. If you do get something working please post back, and outline your approach.
    Cheers. Keith.

Maybe you are looking for

  • No fact table exists at the requested level of detail Error.

    Hi Everybody, Facing a issue on the using  Fact less Fact tables. Scenario: ======== Using two subject areas to develop a report.OBIEE 11g Fact1 --> Compensation Plan Assignments Real Time Fact2 --> Participant Detail Real Time"."Participant Details

  • IPad 3 freezing

    Hi, my iPad 3 is dispalying an "iCloud Backup" message. When I click Ok it's non responsive, I can't power the iPad off, when I plug it in the backup won't start and it is connected to the wifi. The machine is basically frozen and I can't access anyt

  • How to cancel autorecharge

    Hi - I was wondering how can I cancel the auto recharge option on my account& mane years ago this was an easy to find option, now I can't find it anwhere. Please advise. Solved! Go to Solution.

  • Best ways to transfer files to network isolated VMs?

    I'm looking at creating a DHCP scope and have some IP addresses that would be static for such items as routers, printers, etc. I've been told various ways depending on your point of view. I'm curious on what everyone's perspective is.For example, I h

  • Deployment error in referencing "com.sap.km.application"

    Hi, I am working on uploading documents on KM. I have added following sharing references into the project. ---com.sap.portal.htmlb ---com.sap.km.application But i am getting following error: ->Failed to start application sap.com/testattach: The refer