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Thread: MalformedURLException error yet code still works

  1. #1
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    Default MalformedURLException error yet code still works

    .
    Last edited by jt183; October 5th, 2014 at 10:36 PM.


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    Default Re: MalformedURLException error yet code still works

    Can you add a call to the printStackTrace() method in the catch block for more info?
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: MalformedURLException error yet code still works

    Hi. I did and got this (I used aapl as the ticker) :

    java.net.MalformedURLException: no protocol: aapl
    	at java.net.URL.<init>(URL.java:586)
    	at java.net.URL.<init>(URL.java:483)
    	at java.net.URL.<init>(URL.java:432)
    	at financecalc.Finance.getStock(Finance.java:25)
    	at financecalc.Window$1.actionPerformed(Window.java:57)
    	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
    	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2346)
    	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
    	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
    	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
    	at java.awt.Component.processMouseEvent(Component.java:6525)
    	at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
    	at java.awt.Component.processEvent(Component.java:6290)
    	at java.awt.Container.processEvent(Container.java:2234)
    	at java.awt.Component.dispatchEventImpl(Component.java:4881)
    	at java.awt.Container.dispatchEventImpl(Container.java:2292)
    	at java.awt.Component.dispatchEvent(Component.java:4703)
    	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4898)
    	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4533)
    	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4462)
    	at java.awt.Container.dispatchEventImpl(Container.java:2278)
    	at java.awt.Window.dispatchEventImpl(Window.java:2739)
    	at java.awt.Component.dispatchEvent(Component.java:4703)
    	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:746)
    	at java.awt.EventQueue.access$400(EventQueue.java:97)
    	at java.awt.EventQueue$3.run(EventQueue.java:697)
    	at java.awt.EventQueue$3.run(EventQueue.java:691)
    	at java.security.AccessController.doPrivileged(Native Method)
    	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
    	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86)
    	at java.awt.EventQueue$4.run(EventQueue.java:719)
    	at java.awt.EventQueue$4.run(EventQueue.java:717)
    	at java.security.AccessController.doPrivileged(Native Method)
    	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
    	at java.awt.EventQueue.dispatchEvent(EventQueue.java:716)
    	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
    	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
    	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
    	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
    	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
    	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

    I'm reading more about the no protocol error and it seems to be something with my URL. Thank you for your reply

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    Default Re: MalformedURLException error yet code still works

    Is this the same as what is being executed?
     URL url = new URL("aapl");
    That URL does not have a valid protocol.
    MalformedURLException: no protocol: aapl
    You said: The URL I am using is ...
    and posted what looks like a valid URL.
    Please explain.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: MalformedURLException error yet code still works

    To use "aapl" as an example, the URL I am passing into my method (which I should have included in the original post, my apologies) is:

    public static String getURL(String ticker) {
     
     
    URL url = new URL("http://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20yahoo.finance.quotes%20where%20symbol%20in%20(%22" + ticker + "%22)&env=store://datatables.org/alltableswithkeys")

    where ticker (the String being passed in) is aapl so the complete URL being passed as a parameter would be:

    URL url = new URL("http://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20yahoo.finance.quotes%20where%20symbol%20in%20(%22aapl%22)&env=store://datatables.org/alltableswithkeys")

    I can see the confusion. I named the parameter and the String both as ticker, but they are not the same. I have since changed the name of the parameter to something else.

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    Default Re: MalformedURLException error yet code still works

    What happens when you use that code instead what I posted in post#4?

    The error message says something like the code in post#4 was used. Not the URL you are showing in post#5
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: MalformedURLException error yet code still works

    Argh, I see what you mean now. I edited it and used the code in post #4:

    URL url = new URL("http://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20yahoo.finance.quotes%20where%20symbol%20in%20(%22" + yApi+ "%22)&env=store://datatables.org/alltableswithkeys")

    and changed the parameter name to "yApi" avoid confusion. Now when I call the method using getStock(ticker) , I no longer get the error message. And it works! Thank you very much for your help, I appreciate it. I don't know why I was trying to pass that entire URL as a parameter when I could just assign it to URL url ... and pass only the actual ticker as a parameter (aapl for ex.).

    edit: I actually had to revert back to 'ticker' as the parameter name but still works
    Last edited by jt183; October 5th, 2014 at 08:45 PM.

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