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Thread: get terminal value back to ide?

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    Default get terminal value back to ide?

    hi im using ubuntu an if i run the command
    wget http://ipecho.net/plain -O - -q ; echo
    then my external ip is displayed in the terminal but if i run this with runtime... in java how do i get the value back to java ? cant assigne it to string ,the toString() just give memery location and there are no other aplicable methods does any know of a way cos all i can think of doing is writing it to a file and scanning it and damb it im sick of writing stuff to files


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    Administrator copeg's Avatar
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    Default Re: get terminal value back to ide?

    Use the InputStream/OutputStream objects returned by the respective methods in the Process class returned by Runtime.exec to communicate with the process. And some further reading:
    http://www.javaworld.com/jw-12-2000/jw-1229-traps.html

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    Default Re: get terminal value back to ide?

    Quote Originally Posted by copeg View Post
    Use the InputStream/OutputStream objects returned by the respective methods in the Process class returned by Runtime.exec to communicate with the process. And some further reading:
    When Runtime.exec() won't - JavaWorld
    thanks found th answer at that link
                Runtime rt = Runtime.getRuntime();
                Process proc = rt.exec("wget http://ipecho.net/plain -O - -q ; echo");
                InputStream stderr = proc.getInputStream();
                InputStreamReader isr = new InputStreamReader(stderr);
                BufferedReader br = new BufferedReader(isr);
                String line = null;
                while ( (line = br.readLine()) != null)
                    System.out.println(line);

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    Super Moderator pbrockway2's Avatar
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    Default Re: get terminal value back to ide?

    Just wondering, but is there some reason why you are using wget?

    wget is a commandline/console tool for reading what servers produce when you hit them with a url. Consider wget a "square peg" and - as the JavaWorld article suggests - a Java application is something of a "round hole". Using wget from within a Java application involves all sorts of mucking about with streams (and the exceptions they might cause). But Java has all sorts of perfectly good ("round peg") networking classes and methods that could be used to directly get the text that http://ipecho.net/plain returns.

    See Reading Directly from a URL in Oracle's Tutorial. And the surrounding pages.

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    Default Re: get terminal value back to ide?

    Quote Originally Posted by pbrockway2 View Post
    Just wondering, but is there some reason why you are using wget?

    wget is a commandline/console tool for reading what servers produce when you hit them with a url. Consider wget a "square peg" and - as the JavaWorld article suggests - a Java application is something of a "round hole". Using wget from within a Java application involves all sorts of mucking about with streams (and the exceptions they might cause). But Java has all sorts of perfectly good ("round peg") networking classes and methods that could be used to directly get the text that http://ipecho.net/plain returns.

    See Reading Directly from a URL in Oracle's Tutorial. And the surrounding pages.
    a right i was using that command in terminal and movd to ide but your not just right your damb right thanks

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    Super Moderator pbrockway2's Avatar
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    Default Re: get terminal value back to ide?

    I'm the same. If I know something is effective in one place, the most natural thing is to try it elsewhere...

    wget rocks, but it's natural home is within bash scripts etc. If you do try the approach suggested in the Tutorial and get stuck, you can always ask about that.

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