Trying to run an example

Hello guys
i am reading the good tutorials about of Technical Articles and Tips of j2me
i have a problem ,well i am in linux with j2me toolkit 2.2 and use the jvm or jdk 1.5 update 1
and trying to run the example with servlets to send an email
http://developers.sun.com/techtopics/mobility/midp/articles/socketRMI/
well this example consist in 3 java files how is evident
a EmailMidlet.java,EmailSender.java,EmailServlet.java
well i put EmailMidlet.java in the src (folder apps toolkit) of an project to execute the example
the rest of both java files go to an independent project or folder in tomcat (5.5.9)
(the web.xml and classes is fine) coz i execute other examples of the same style (that needs localhost or tomcat)
well i change of course the line of the url to my localhost
and when i try to send the email appear this message in my visual console in the toolkit
(is not the unique case related with servlets and email, coz there is an another example of this style that
throw this message) and the application,
Project settings saved
Building "SUN02"
Build complete
Running with storage root DefaultColorPhone
Warning: To avoid potential deadlock, operations that may block, such as
networking, should be performed in a different thread than the
commandAction() handler.
and of course the application deadlock
how i can fix the code?
p.d:i only change the line of the url
thanks a lot for your time

Hi,
What are u exactly using? The PLSQL front-end or the Java front-end? How are u seeing this cut off? Is it in SQLPlus or ur own application?
thanks
Murali

Similar Messages

  • Trying to run the example "rf record and playback reference application"

    http://zone.ni.com/devzone/cda/epd/p/id/5894   trying to run this example but a lot of files are not being found.  I'm using Labview 8.5 with version 4 of the sound and vibration toolkit.  I suspect the problem is the old toolkit version.  Can someone confirm? Can't find any info on upgrading to toolkit so I suppose it would mean a new purchase?  thanks

    Hello Mike,
    This example is designed for our RF Hardware platform.  You need the RFSG driver, RFSA driver, Spectral Measurements Toolkit, Modulation Toolkit, and the advanced signal processing toolkit for the example to run.  You should be able to see this under the software requirements at the bottom of the page.  The two drivers should be available for download on our website, but the toolkits must be purchased and they aren't generally available with the dev suite.
    I hope this helps,
    Paul C
    Message Edited by Paul C. on 03-11-2010 12:28 PM

  • Error JBO-33001 while trying to run OnlineOrders Example

    I am trying to run the bc4j samples particularly the OnlineOrders example, but I am ending getting the following error despite having set the classpath properly.
    Any pointers to it would be greatly appreciated..
    Thanks in Advance
    Ajith
    ERROR:
    oracle.jbo.jboException: JBO-33001; Cannot find the configuration file /onlineorders/common/bc4j.xcfg in the classpath
    null

    Getting the same error on BO EDGE 3.1 when trying to run a VBS program object.
    The same Object seems to run OK on BO ENTERPRISE 3.1, so I am wondering if it is an EDGE specific issue...?
    Anyone seen this before?

  • Trying to run simple servlet - error

              I am the first time user of Beas Weblogic & I am trying to run simple example
              servlets from Weblogic Console. However, when I try to LoadServlets, I get an
              error 'Property Change Error for Property "Load"; Unable to load servlet'
              Is there anything I am missing? I'd appreciate any help.
              Thx.
              Ravi
              

    Hi,
    I have found out the cause. im pointing to the wrong classpath. it should be class12.zip instead of class111.zip, something i copied from my server running oracle8i.

  • Is anyone know how to run the examples in 3d user interfaces with java 3d

    hi dear ,
    I am trying to run the examples in 3d user interfaces with java 3d.
    I hope i can load the library in jcreator. but the libarary for this book are classes files , it do not have jar file for it . the jcreator do not read these classes . i do not know why ? i am wonder if there any one run these code before can give me some idear .
    thanks so much .
    the code u can get from this link.
    http://www.manning.com/books/barrilleaux/source
    thank you for u to have a look for me .
    regards
    xiaocui

    <h2>{color:red}CROSS POSTED{color}</h2>
    [t-5289810]
    Cross posting is rude.
    db

  • Problem running your example with TCL in TestStand 2.0

    I`m having problems trying to run your example: "Calling TCL Scripts from TestStand 1.0.x". I use TestStand 2.0. In fact, I don`t see any response when running first step in a sequence. Could it be issues related to the TestStand version.

    The example should work in TestStand 2.0.x, since other users have reported that they have successfully done so and nothing has changed in TestStand 2.0.x that would affect its execution.
    In order to get the example to work you will need to have the TCL interpreter installed correctly so that the dll being used in the example can invoke it. If you can programmatically control the interpreter with any other code module as this dll does then this example should work as well. However, if you cannot do this in any way on your system then it is safe to say that nothing will work including the example. Verify that the TCL interpreter will work in this fashion per the vendor's instructions and then try the example again. If you are receiving errors from TestStand
    when executing the sequence let us know about those and we may be able to help you more directly.
    Jason F.
    Applications Engineer
    National Instruments
    www.ni.com/ask

  • Unsupported Version error when trying to run Web Services Tutorial example

    Hi there,
    I'm trying to run the first example from the Java Web Services Tutorial and get the following error when I type 'asant build' in my Command Window.
    Buildfile: build.xml
    BUILD FAILED
    java.lang.UnsupportedClassVersionError: com/sun/tools/ws/ant/WsImport (Unsupport
    ed major.minor version 49.0)
    at java.lang.ClassLoader.defineClass0(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:539)
    at org.apache.tools.ant.loader.AntClassLoader2.defineClassFromData(AntCl
    assLoader2.java:76)
    When I do a java -version I see my version is Java 1.5, and I'm not sure why the build is still trying to use Java 1.4. I do not want to delete the 1.4 from my machine as it is used for something else.
    C:\jwstutorial20\examples\jaxws\helloservice>java -version
    java version "1.5.0_09"
    Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_09-b03)
    Java HotSpot(TM) Client VM (build 1.5.0_09-b03, mixed mode, sharing)
    Could you please help me with this problem?
    Thanks in advance.
    Azeem.

    Hi Azeem.
    Check out values specified for JAVA_HOME, PATH and CLASSPATH under environment variable. Was facing the same problem. Changed the values to point to jdk1.5 and it is working now.
    BTW.
    You don't have to uninstall jdk1.4.
    Cheers!!!

  • Error trying to run Example Portal

    We tried installing Weblogic Commerce Server and running it. It starts ups fine
    but as soon as we try to run the Example application the following error is encountered.
    Please advise.
    weblogic.servlet.jsp.JspException: (line -1): Error in tag library at: 'wl': For
    tag 'repeat', cannot load extra info class 'weblogicx.jsp.tags.RepeatTagInfo'
    at weblogic.servlet.jsp.StandardTagLib.jspException(StandardTagLib.java:
    138)

    Hi Eric,
    Please see the following:
    http://edocs.bea.com/wlcs/docs32/relnotes/relnotes.htm#99669
    Basically, you need to put a tag library which ships as part of
    the WebLogic Server service pack into the right directory.
    Cheers,
    Skip
    "Eric Lee" <[email protected]> wrote in message
    news:3ac38684$[email protected]..
    >
    We tried installing Weblogic Commerce Server and running it. It starts upsfine
    but as soon as we try to run the Example application the following erroris encountered.
    Please advise.
    weblogic.servlet.jsp.JspException: (line -1): Error in tag library at:'wl': For
    tag 'repeat', cannot load extra info class'weblogicx.jsp.tags.RepeatTagInfo'
    atweblogic.servlet.jsp.StandardTagLib.jspException(StandardTagLib.java:
    138)

  • Error 1073807331 when trying to Run the "servo" example in Labview.

    Error -1073807331 occurred at Property Node (arg 2) in VISA Configure Serial Port (Instr).vi->LabVIEW Interface for Arduino.lvlib:Init.vi->LabVIEW Interface for Arduino.lvlib:Arduino Servo.vi
    So, I can connect to the Arduino Mega 2560 in MAX and also in VISA, but when I try to run this example, I get the above error.  with the explanation "The specified attribute is not defined or supported by the referenced resource."
    the ONLY error i can see in VISA is this :
    under Configuration/View attributes-  "Interrupt in pipe status | VI_ATTR_USB_INTR_IN_STATUS | Invalid Property Value"
    this is in red., all other text is in black.
    Under "Input/Output" I can write to the board "*IDN?\n" and get a return of 6bytes which it appears happy with.
    Query button appears happy as well.
    as does "Read"
    the "read status byte" button gives me "
    Read STB Operation
    Error
    VISA: (Hex 0xBFFF003A) Unable to start operation because setup is invalid (due to attributes being set to an inconsistent state)."
    I am at a loss as to what to do about this as I cannot see a way to change this value.
    Any help is greatly appreciated.
    thanks
    Jason Lee

    OK, well I know how to connect the arduino to my PC as well, its simple.
    I have been playing around with the mega2560 for over a year, so  it's not that.
    I can connect to and talk to the 2560 from the arduino IDE, but not LabView.    I did see both TX and RX activity tonight, and thought, "yay! its finally stopped being retarded", but as soon as I hit run, it fell back to the old"cannot find arduino"
    the reason I was using VISA was because I couldn't get any joy from the serial/USB method.  
    If I somehow mange to let the magic smoke out of this, I doubt I'd be very upset bout it.
    anyway, any other ideas?
    Cheers
    Jason

  • Getting "java.lang.NullPointerException" error message when trying to run an OATS OpenScript file from Eclipse to Create a record in Oracle EBS

    Hello,
    I'm trying to run a simple OpenScript script in Eclipse that creates a record (a Supplier in this case) in Oracle E-Business Suite. So I copied the the script file from OpenScript and created it as a Class in Eclipse.  Then I created a main class to call the methods within the script class but no matter what method I call (initialize, run or finalize) I'm getting the java.lang.NullPointerException message. The error doesn't seem to be related with any specific line in the script but with the way that I'm calling it.
    Should I call the OpenScript class from my main class in a different way? (see my examples below)
    BTW, all external .jar files coming with OATS have been added to my project in Eclipse.
    1) Here's the main class I created to call the OpenScript method (Eclipse auto-corrected my main class adding a Try and Catch around the method call):
    public class Test {
        public static void main(String[] args) {
            nvscript nvs = new nvscript();
            try {
                nvs.initialize();
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
    2) Here's the script from OpenScript (the actual script has more steps but I'm just using the first one for a proof of concept):
    import oracle.oats.scripting.modules.basic.api.*;
    import oracle.oats.scripting.modules.browser.api.*;
    import oracle.oats.scripting.modules.functionalTest.api.*;
    import oracle.oats.scripting.modules.utilities.api.*;
    import oracle.oats.scripting.modules.utilities.api.sql.*;
    import oracle.oats.scripting.modules.utilities.api.xml.*;
    import oracle.oats.scripting.modules.utilities.api.file.*;
    import oracle.oats.scripting.modules.webdom.api.*;
    import oracle.oats.scripting.modules.formsFT.api.*;
    import oracle.oats.scripting.modules.applet.api.*;
    public class nvscript extends IteratingVUserScript {
        @ScriptService oracle.oats.scripting.modules.utilities.api.UtilitiesService utilities;
        @ScriptService oracle.oats.scripting.modules.browser.api.BrowserService browser;
        @ScriptService oracle.oats.scripting.modules.functionalTest.api.FunctionalTestService ft;
        @ScriptService oracle.oats.scripting.modules.webdom.api.WebDomService web;
        @ScriptService oracle.oats.scripting.modules.applet.api.AppletService applet;
        @ScriptService oracle.oats.scripting.modules.formsFT.api.FormsService forms;
        public void initialize() throws Exception {
            this.getSettings().set("formsft.useformsonly",true);
            browser.launch();
        public void run() throws Exception {
            beginStep(
                    "[1] E-Business Suite Home Page Redirect (/ebs12cloud.winshuttle.com:8000/)",
                    0);
                web.window(2, "/web:window[@index='0' or @title='about:blank']")
                        .navigate("http://ebs12.xxxxxxx.com:8000/");
                web.window(4, "/web:window[@index='0' or @title='Login']")
                        .waitForPage(null);
                    think(4.969);
                web.textBox(
                        7,
                        "/web:window[@index='0' or @title='Login']/web:document[@index='0']/web:form[@id='DefaultFormName' or @name='DefaultFormName' or @index='0']/web:input_text[@id='usernameField' or @name='usernameField' or @index='0']")
                        .setText("winshuttle_user");
                    think(2.0);
                web.textBox(
                        8,
                        "/web:window[@index='0' or @title='Login']/web:document[@index='0']/web:form[@id='DefaultFormName' or @name='DefaultFormName' or @index='0']/web:input_password[@id='passwordField' or @name='passwordField' or @index='0']")
                        .click();
                    think(1.109);
                web.textBox(
                        9,
                        "/web:window[@index='0' or @title='Login']/web:document[@index='0']/web:form[@id='DefaultFormName' or @name='DefaultFormName' or @index='0']/web:input_password[@id='passwordField' or @name='passwordField' or @index='0']")
                        .setPassword(deobfuscate("kjhkjhkj=="));
                    think(1.516);
                web.button(
                        10,
                        "/web:window[@index='0' or @title='Login']/web:document[@index='0']/web:form[@id='DefaultFormName' or @name='DefaultFormName' or @index='0']/web:button[@id='SubmitButton' or @value='Login' or @index='0']")
                        .click();
            endStep();
        public void finish() throws Exception {       
    3) Here's the error messages I'm getting based on the method I call from my main class:
    3.a) when calling Initialize():
    java.lang.NullPointerException
        at oracle.oats.scripting.modules.basic.api.IteratingVUserScript.getSettings(IteratingVUserScript.java:723)
        at nvscript.initialize(nvscript.java:22)
        at Test.main(Test.java:9)
    3 b) when calling Run():
    java.lang.NullPointerException
        at oracle.oats.scripting.modules.basic.api.IteratingVUserScript.beginStep(IteratingVUserScript.java:260)
        at nvscript.run(nvscript.java:30)
        at Test.main(Test.java:9)
    Any help and/or constructive comment will be appreciated it.
    Thanks.
    Federico.

    UPDATE
    Compiling from command line I found out that the class definition for oracle.oats.scripting.modules.basic.api.IteratingVUserScript is missing. Do you know what .jar file contains this class?
    Thanks.
    Fede.

  • Getting below error while running Tutorial example in Jdev 10G (10.1.3.3.0)

    Hi Guys ,
    I am trying to run the Tutorial example in Jdev 10G ( 10.1.3.3.0) and getting the below error message.
    Please help me to resolve this error.
    Error :
    Network Error (tcp_error)
    A communication error occurred: "Operation timed out"
    The Web Server may be down, too busy, or experiencing other problems preventing it from responding to requests. You may wish to try again at a later time.
    For assistance, contact your network support team.
    Thanks and regards
    Raghu

    Hi Raghu,
    Make sure you are using the right version of Jdeveloper with your EBS application,
    I understand you are trying to run the page with a R12 application, below are the Jdev , EBS map,
    ATG Release 12 Version     JDeveloper 10g Patch
    12.0.0     <<Patch 5856648>> 10g Jdev with OA Extension
    12.0.1 (patch 5907545)     <<Patch 5856648>> 10g Jdev with OA Extension
    12.0.2 (patch 5484000 or 5917344)     <<Patch 6491398>> 10g Jdev with OA Extension ARU for R12 RUP2 (replaces 6197418)
    12.0.3 (patch 6141000 or 6077669)     <<Patch 6509325>> 10g Jdev with OA Extension ARU for R12 RUP3
    12.0.4 (patch 6435000 or 6272680)     <<Patch 6908968>> 10G JDEVELOPER WITH OA EXTENSION ARU FOR R12 RUP4
    12.0.5 (No new ATG code released)     No new JDev patch required
    12.0.6 (patch 6728000 or patch 7237006)     <<Patch 7523554>> 10G Jdeveloper With OA Extension ARU for R12 RUP6 Release 12.1 ATG Release 12.1 Version     JDeveloper 10g Patch
    12.1 (Controlled Release - only included for completeness)     <<Patch 7315332>> 10G Jdev with OA Extension ARU for R12.1 (Controlled Release)
    12.1.1 (rapidInstall or patch 7303030)     <<Patch 8431482>> 10G Jdeveloper with OA Extension ARU for R12.1.1
    12.1.2 (patch 7303033 or patch 7651091)     <<Patch 9172975>> 10G JDEVELOPER WITH OA EXTENSION ARU FOR R12.1 RUP2
    For more details, pleas erefer the metalink
    Note 416708.1 How to find the correct version of JDeveloper to use with eBusiness Suite 11i or Release 12.x
    With regards,
    Kali.
    OSSi.

  • Error message when trying to excute jsf examples or my own code

    Hi, Any help would be deeply appreciated. I am trying to run code I've written to test jsf on WSAD and am getting the following runtime error when I deploy to the test environment. I get this error message even when I try to run the examples supplied with the EA3 version of JSF (when I import the source into my java source folder and compile (rather than using the precompiled imported classes).
    [4/25/03 11:09:29:170 EDT] 5d874f9b WebGroup E SRVE0026E: [Servlet Error]-[Cannot find FacesContext]: javax.servlet.jsp.JspException: Cannot find FacesContext
         at javax.faces.webapp.FacesTag.doStartTag(FacesTag.java:209)
         at org.apache.jsp._Input._jspService(_Input.java:147)
         at com.ibm.ws.webcontainer.jsp.runtime.HttpJspBase.service(HttpJspBase.java:89)
    <CUT REMAINDER OF ERROR MESSAGE>
    Thanks in advance for your help,
    sanjay

    Hi,
    I also received a message like you. In my case I forgot to redirect the
    user to a address which contains /faces/ part. Like that
    http://localhost:8080/ims/faces/newinventory.jsp
    Also You have to check your web.xml file. These lines have to be there.
    - <servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
    </servlet>
    - <!-- Faces Servlet Mapping
    -->
    - <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>/faces/*</url-pattern>
    </servlet-mapping>
    Omer

  • Trying to run 2 external monitors with HDMI splitter

    I'm trying to run two external monitors from my iMac using an HDMI splitter but I can only get signal to one. I've read a lot of forums saying it is not possible to run two monitors from an iMac but the two monitors can be mirrored, in fact, I would be prefer it if they were.
    I've got the mini-DVI to HDMI cable running to an HDMI splitter, one end going to my 52'' Sharp Aquos tv and the other to my 21" BenQ monitor in the kitchen.
    I would just like to be able to have both monitors playing the same video at the sametime, I don't understand why this would not be possible.
    I'm at work so I don't have the exact specifications but I recently purchased my iMac and have the i7 processor and the Radeon 5750 graphics card so I know it's not a hardware limitation
    What am I doing wrong?

    I will reply to my own question just because I figured out the answer.
    The Larger display has to be set to the maximum settings of the smaller display
    For example: My sharp aquos has to be set to 720p BEFORE plugging in the BenQ which will not do 1080p
    If you try to plug in the benQ before setting the Aquos to 720p, it will not work and you will not be able to change it after the fact.
    May seem simple now, but boy did that drive me crazy for a while.

  • WrongName error when trying to run a package file

    Hi, I am trying to run a file in a package. The package name is called com.davidflanagan.examples.net and the file name is ProxyServer.class. I've set the class path to point to the directory the package is in using the CLASSPATH environment variable. I've tried using "java ProxyServer" and "java com.davidflanagan.examples.net.ProxyServer", but I get a cryptic Wrong name error in both Windows and Linux. Any help would be greatly appreciated.

    First, ProxyServer's source code must start with the line...
    package com.davidflanagan.examples.net;
    Next, you must have a directory structure that matches the package name - a directory named com which contains a directory named davidflanagan which contains a directory named examples which contains a directory named net and ProxyServer.class must be in the net directory,.
    Next, the directory that contains com must be in your Classpath when you execute ProxyServer.
    To execute ProxyServer, use "java com.davidflanagan.examples.net.ProxyServer"
    http://java.sun.com/docs/books/tutorial/java/interpack/packages.html

  • I believe that i have malware on my mac, osx 10.9.4. accordingly, i've tried to run clamxav (on my mac HD) but just get a spinning wheel, then have to shut down. any advice on how to stop spinning wheel or get rid of malware? please help. :-).

    i believe that i have malware (possible highjack of safari browser) on my mac, osx 10.9.4. accordingly, i've tried to run clamxav (on my mac HD) but just get a spinning wheel, then have to shut down. any advice on how to stop spinning wheel or get rid of malware? i have symnatic endpoint and, after scanning, it reveals nothing. please help. :-).

    are locked user files or that have incorrect permission a bad thing?
    Yes.
    why am i removing symantec?
    Short answer: Because it's worse than useless and worse than the imaginary "viruses" you're afraid of would be if they really existed. For the long answer, see below.
    1. This is a comment on what you should—and should not—do to protect yourself from malicious software ("malware") that circulates on the Internet and gets onto a computer as an unintended consequence of the user's actions. It does not apply to software, such as keystroke loggers, that may be installed deliberately by an intruder who has hands-on access to the computer, or who has been able to log in to it remotely. That threat is in a different category, and there's no easy way to defend against it.
    The comment is long because the issue is complex. The key points are in sections 5, 6, and 10.
    OS X now implements three layers of built-in protection specifically against malware, not counting runtime protections such as execute disable, sandboxing, system library randomization, and address space layout randomization that may also guard against other kinds of exploits.
    2. All versions of OS X since 10.6.7 have been able to detect known Mac malware in downloaded files, and to block insecure web plugins. This feature is transparent to the user. Internally Apple calls it "XProtect."
    The malware recognition database used by XProtect is automatically updated; however, you shouldn't rely on it, because the attackers are always at least a day ahead of the defenders.
    The following caveats apply to XProtect:
    ☞ It can be bypassed by some third-party networking software, such as BitTorrent clients and Java applets.
    ☞ It only applies to software downloaded from the network. Software installed from a CD or other media is not checked.
    As new versions of OS X are released, it's not clear whether Apple will indefinitely continue to maintain the XProtect database of older versions such as 10.6. The security of obsolete system versions may eventually be degraded. Security updates to the code of obsolete systems will stop being released at some point, and that may leave them open to other kinds of attack besides malware.
    3. Starting with OS X 10.7.5, there has been a second layer of built-in malware protection, designated "Gatekeeper" by Apple. By default, applications and Installer packages downloaded from the network will only run if they're digitally signed by a developer with a certificate issued by Apple. Software certified in this way hasn't necessarily been tested by Apple, but you can be reasonably sure that it hasn't been modified by anyone other than the developer. His identity is known to Apple, so he could be held legally responsible if he distributed malware. That may not mean much if the developer lives in a country with a weak legal system (see below.)
    Gatekeeper doesn't depend on a database of known malware. It has, however, the same limitations as XProtect, and in addition the following:
    ☞ It can easily be disabled or overridden by the user.
    ☞ A malware attacker could get control of a code-signing certificate under false pretenses, or could simply ignore the consequences of distributing codesigned malware.
    ☞ An App Store developer could find a way to bypass Apple's oversight, or the oversight could fail due to human error.
    Apple has so far failed to revoke the codesigning certificates of some known abusers, thereby diluting the value of Gatekeeper and the Developer ID program. These failures don't involve App Store products, however.
    For the reasons given, App Store products, and—to a lesser extent—other applications recognized by Gatekeeper as signed, are safer than others, but they can't be considered absolutely safe. "Sandboxed" applications may prompt for access to private data, such as your contacts, or for access to the network. Think before granting that access. Sandbox security is based on user input. Never click through any request for authorization without thinking.
    4. Starting with OS X 10.8.3, a third layer of protection has been added: a "Malware Removal Tool" (MRT). MRT runs automatically in the background when you update the OS. It checks for, and removes, malware that may have evaded the other protections via a Java exploit (see below.) MRT also runs when you install or update the Apple-supplied Java runtime (but not the Oracle runtime.) Like XProtect, MRT is effective against known threats, but not against unknown ones. It notifies you if it finds malware, but otherwise there's no user interface to MRT.
    5. The built-in security features of OS X reduce the risk of malware attack, but they are not, and never will be, complete protection. Malware is a problem of human behavior, and a technological fix is not going to solve it. Trusting software to protect you will only make you more vulnerable.
    The best defense is always going to be your own intelligence. With the possible exception of Java exploits, all known malware circulating on the Internet that affects a fully-updated installation of OS X 10.6 or later takes the form of so-called "Trojan horses," which can only have an effect if the victim is duped into running them. The threat therefore amounts to a battle of wits between you and the scam artists. If you're smarter than they think you are, you'll win. That means, in practice, that you always stay within a safe harbor of computing practices. How do you know when you're leaving the safe harbor? Below are some warning signs of danger.
    Software from an untrustworthy source
    ☞ Software of any kind is distributed via BitTorrent, or Usenet, or on a website that also distributes pirated music or movies.
    ☞ Software with a corporate brand, such as Adobe Flash Player, doesn't come directly from the developer’s website. Do not trust an alert from any website to update Flash, or your browser, or any other software.
    ☞ Rogue websites such as Softonic and CNET Download distribute free applications that have been packaged in a superfluous "installer."
    ☞ The software is advertised by means of spam or intrusive web ads. Any ad, on any site, that includes a direct link to a download should be ignored.
    Software that is plainly illegal or does something illegal
    ☞ High-priced commercial software such as Photoshop is "cracked" or "free."
    ☞ An application helps you to infringe copyright, for instance by circumventing the copy protection on commercial software, or saving streamed media for reuse without permission.
    Conditional or unsolicited offers from strangers
    ☞ A telephone caller or a web page tells you that you have a “virus” and offers to help you remove it. (Some reputable websites did legitimately warn visitors who were infected with the "DNSChanger" malware. That exception to this rule no longer applies.)
    ☞ A web site offers free content such as video or music, but to use it you must install a “codec,” “plug-in,” "player," "downloader," "extractor," or “certificate” that comes from that same site, or an unknown one.
    ☞ You win a prize in a contest you never entered.
    ☞ Someone on a message board such as this one is eager to help you, but only if you download an application of his choosing.
    ☞ A "FREE WI-FI !!!" network advertises itself in a public place such as an airport, but is not provided by the management.
    ☞ Anything online that you would expect to pay for is "free."
    Unexpected events
    ☞ A file is downloaded automatically when you visit a web page, with no other action on your part. Delete any such file without opening it.
    ☞ You open what you think is a document and get an alert that it's "an application downloaded from the Internet." Click Cancel and delete the file. Even if you don't get the alert, you should still delete any file that isn't what you expected it to be.
    ☞ An application does something you don't expect, such as asking for permission to access your contacts, your location, or the Internet for no obvious reason.
    ☞ Software is attached to email that you didn't request, even if it comes (or seems to come) from someone you trust.
    I don't say that leaving the safe harbor just once will necessarily result in disaster, but making a habit of it will weaken your defenses against malware attack. Any of the above scenarios should, at the very least, make you uncomfortable.
    6. Java on the Web (not to be confused with JavaScript, to which it's not related, despite the similarity of the names) is a weak point in the security of any system. Java is, among other things, a platform for running complex applications in a web page, on the client. That was always a bad idea, and Java's developers have proven themselves incapable of implementing it without also creating a portal for malware to enter. Past Java exploits are the closest thing there has ever been to a Windows-style virus affecting OS X. Merely loading a page with malicious Java content could be harmful.
    Fortunately, client-side Java on the Web is obsolete and mostly extinct. Only a few outmoded sites still use it. Try to hasten the process of extinction by avoiding those sites, if you have a choice. Forget about playing games or other non-essential uses of Java.
    Java is not included in OS X 10.7 and later. Discrete Java installers are distributed by Apple and by Oracle (the developer of Java.) Don't use either one unless you need it. Most people don't. If Java is installed, disable it—not JavaScript—in your browsers.
    Regardless of version, experience has shown that Java on the Web can't be trusted. If you must use a Java applet for a task on a specific site, enable Java only for that site in Safari. Never enable Java for a public website that carries third-party advertising. Use it only on well-known, login-protected, secure websites without ads. In Safari 6 or later, you'll see a lock icon in the address bar with the abbreviation "https" when visiting a secure site.
    Stay within the safe harbor, and you’ll be as safe from malware as you can practically be. The rest of this comment concerns what you should not do to protect yourself.
    7. Never install any commercial "anti-virus" (AV) or "Internet security" products for the Mac, as they are all worse than useless. If you need to be able to detect Windows malware in your files, use one of the free security apps in the Mac App Store—nothing else.
    Why shouldn't you use commercial AV products?
    ☞ To recognize malware, the software depends on a database of known threats, which is always at least a day out of date. This technique is a proven failure, as a major AV software vendor has admitted. Most attacks are "zero-day"—that is, previously unknown. Recognition-based AV does not defend against such attacks, and the enterprise IT industry is coming to the realization that traditional AV software is worthless.
    ☞ Its design is predicated on the nonexistent threat that malware may be injected at any time, anywhere in the file system. Malware is downloaded from the network; it doesn't materialize from nowhere. In order to meet that nonexistent threat, commercial AV software modifies or duplicates low-level functions of the operating system, which is a waste of resources and a common cause of instability, bugs, and poor performance.
    ☞ By modifying the operating system, the software may also create weaknesses that could be exploited by malware attackers.
    ☞ Most importantly, a false sense of security is dangerous.
    8. An AV product from the App Store, such as "ClamXav," has the same drawback as the commercial suites of being always out of date, but it does not inject low-level code into the operating system. That doesn't mean it's entirely harmless. It may report email messages that have "phishing" links in the body, or Windows malware in attachments, as infected files, and offer to delete or move them. Doing so will corrupt the Mail database. The messages should be deleted from within the Mail application.
    An AV app is not needed, and cannot be relied upon, for protection against OS X malware. It's useful, if at all, only for detecting Windows malware, and even for that use it's not really effective, because new Windows malware is emerging much faster than OS X malware.
    Windows malware can't harm you directly (unless, of course, you use Windows.) Just don't pass it on to anyone else. A malicious attachment in email is usually easy to recognize by the name alone. An actual example:
    London Terror Moovie.avi [124 spaces] Checked By Norton Antivirus.exe
    You don't need software to tell you that's a Windows trojan. Software may be able to tell you which trojan it is, but who cares? In practice, there's no reason to use recognition software unless an organizational policy requires it. Windows malware is so widespread that you should assume it's in everyemail attachment until proven otherwise. Nevertheless, ClamXav or a similar product from the App Store may serve a purpose if it satisfies an ill-informed network administrator who says you must run some kind of AV application. It's free and it won't handicap the system.
    The ClamXav developer won't try to "upsell" you to a paid version of the product. Other developers may do that. Don't be upsold. For one thing, you should not pay to protect Windows users from the consequences of their choice of computing platform. For another, a paid upgrade from a free app will probably have all the disadvantages mentioned in section 7.
    9. It seems to be a common belief that the built-in Application Firewall acts as a barrier to infection, or prevents malware from functioning. It does neither. It blocks inbound connections to certain network services you're running, such as file sharing. It's disabled by default and you should leave it that way if you're behind a router on a private home or office network. Activate it only when you're on an untrusted network, for instance a public Wi-Fi hotspot, where you don't want to provide services. Disable any services you don't use in the Sharing preference pane. All are disabled by default.
    10. As a Mac user, you don't have to live in fear that your computer may be infected every time you install software, read email, or visit a web page. But neither can you assume that you will always be safe from exploitation, no matter what you do. Navigating the Internet is like walking the streets of a big city. It's as safe or as dangerous as you choose to make it. The greatest harm done by security software is precisely its selling point: it makes people feel safe. They may then feel safe enough to take risks from which the software doesn't protect them. Nothing can lessen the need for safe computing practices.

Maybe you are looking for