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Java Forum / General / November 2007Download Graphing Utility (Complimentry Copy)
GraphEasyRect was previously available as an applet. Now we have converted it to a desktop standalone application that runs on multiple platforms Windows, Mac, and Linux This tool allows graphing functions in cartesian plane, points of discontinuity having limits are encircled on graph line. You may view and copy the values of the function between a range of x values Download link is http://www.britishcomputercolleges.com/vu/GraphEasyRect.jar Its a java executable file which will require you to have Java Runtime Environment on the system to run. Its a complimentry tool so do not hesitate to utilize its features Our online gallery of tools include Graphing Polar curves, finding area under curve and graphing in Cartesian plane Visit http://www.britishcomputercolleges.com > Its "It's" > a complimentry "complimentary" > tool so do not hesitate to utilize its features I'll give it a pass, thanks. I'm afraid it might be buggy, based on your presentation of it.  SignatureLew ... >Download link is http://www.britishcomputercolleges.com/vu/GraphEasyRect.jar How about offering a web-start launch? [e.g. grapheasy.jnlp] <?xml version='1.0' encoding='UTF-8' ?> <jnlp spec='1.0' codebase='http://www.britishcomputercolleges.com/vu'> <information> <title>Graph Easy</title> <vendor>British Computer Colleges</vendor> <homepage href='http://www.britishcomputercolleges.com/' /> <description kind='tooltip'> Graphing Tool </description> <description kind='one-line'> Graphing Tool - Freeware </description> </information> <resources> <java version='1.4+' /> <jar href='GraphEasyRect.jar' size='28802' /> </resources> <application-desc /> </jnlp> [/e.g. grapheasy.jnlp] Put that file in the same directory as the jar file, and it should be 'set to go' barring configuring the server to serve the correct content type for JNLP files (many do, nowadays). It can also include things like splash screens, desktop integration, icons,.. I had to make a few guesses - adjust as needed. BTW - there seems to be a slight 'paint' issue when the help dialogs are cleared from over the graph area - the graph is redrawn, but the background is not (is replaced by 'white shadow' where the dialog was). SignatureAndrew Thompson http://www.athompson.info/andrew/ >... >>Download link is http://www.britishcomputercolleges.com/vu/GraphEasyRect.jar > >How about offering a web-start launch? > >[e.g. grapheasy.jnlp] .. >Put that file in the same directory as the jar file, >and it should be 'set to go' ... To test it from the command line, if in the same directory as the jar and jnlp, use this command (Win e.g.).. D:\grapheasy>javaws -codebase file:. file:grapheasy.jnlp (But web start is much nicer - off a server.) SignatureAndrew Thompson http://www.athompson.info/andrew/ > >... > >>Download link ishttp://www.britishcomputercolleges.com/vu/GraphEasyRect.jar [quoted text clipped - 5 lines] > >Put that file in the same directory as the jar file, > >and it should be 'set to go' ... Andrew I had a D in college English, I will consult dictionary and a grammar book next time I post. I am new to Java, I copied your jnlp code in a file grapheasy.jnlp and stored it in the same folder where my jar file resides on server When I pointed my browser to the jar file, it popped open the dialog box which asked whether i wanted to save or open the file When i clicked on open it simple ran it But where is this jar file stored on user's system and how does the user run the application next time she want to Asad > To test it from the command line, if in the same > directory as the jar and jnlp, use this command [quoted text clipped - 8 lines] > > Message posted via JavaKB.comhttp://www.javakb.com/Uwe/Forums.aspx/java-general/200710/1 >> >... >> >>Download link ishttp://www.britishcomputercolleges.com/vu/GraphEasyRect.jar (re. web start launch) >Andrew > >I had a D in college English, I will consult dictionary and a grammar >book next time I post. Sure, but note it was actually Lew that provided those tips. >I am new to Java, I copied your jnlp code in a file grapheasy.jnlp and >stored it in the same folder where my jar file resides on server Here? <http://www.britishcomputercolleges.com/vu/grapheasy.jnlp> I just tried, and got a message.. "Sorry Our site is experiencing technical difficulties, kindly come back in a day or two " (Wow. Tell those Server-Admin. people this is the third millennium, and if a site is experiencing difficulties, I might give it '10 minutes' before I try it again - if it's lucky..) >When I pointed my browser to the jar file, it popped open the dialog >box which asked whether i wanted to save or open the file No. You need to link directly to the *JNLP* file. Clicking that link will download the jar, cache it locally*, and launch it on-screen for the user. >When i clicked on open it simple ran it > >But where is this jar file stored on user's system and how does the >user run the application next time she want to * When we deploy things using web start, neither the developer nor end user needs to specifically know *where* the file is cached, though the user or their sys. admin. can find out if motivated/savvy enough. To allow the user to relaunch the application, we (the deployer) can 'suggest' desktop icon and launch menu items (in the JNLP file) - to launch the app. in future. Most of the JNLP (web start API) examples shown here suggest a dektop icon. <http://www.physci.org/jws/> And.. (hunts around) this one .. <http://www.physci.org/xml/xmltools.html#xmlwfc> ..suggests a menu item. The direct link is.. <http://www.physci.org/xml/xmlwfc.jnlp> One thing, in closing, is that I find the habit of putting replies above earlier text (top-posting) to be very confusing. It is generally better to put replies directly after whatever you are replying to, and trim any text no longer immediately relevant - like I have done in my reply. SignatureAndrew Thompson http://www.athompson.info/andrew/ ... >One thing, in closing, is that I find the habit of putting >replies above earlier text (top-posting) to be very confusing. Since your reply was *not* 'top-posted', that statement was mostly nonsense. Better placement of the replies (immediately after the quoted material) would be appreciated, though. SignatureAndrew Thompson http://www.athompson.info/andrew/ > <http://www.britishcomputercolleges.com/vu/grapheasy.jnlp> > I just tried, and got a message.. [quoted text clipped - 4 lines] > millennium, and if a site is experiencing difficulties, I might > give it '10 minutes' before I try it again - if it's lucky..) You got this message I have put up for pages that were removed from site last month, it was intended for those who use those pages. After storing and trying the jnlp file, i had removed it before you had a chance to try it I have since uploaded it again and its link is http://www.britishcomputercolleges.com/vu/GraphEasy.jnlp I have added a link to this on opening page http://www.britishcomputercolleges.com See the link under DESKTOP VERSION titled "Graph Rectangular" When i click this, it shows the xml contents >> <http://www.britishcomputercolleges.com/vu/grapheasy.jnlp> ... >http://www.britishcomputercolleges.com/vu/GraphEasy.jnlp Try to avoid upper case in URLs. That returns a 404 for me (as does the lowser case variant) >I have added a link to this on opening page http://www.britishcomputercolleges.com I don't see it. >See the link under DESKTOP VERSION titled "Graph Rectangular" The only link I see there, is to the jar. >When i click this, it shows the xml contents The server is probably not providing the correct content-type for JNLP files. That will be easy for me to check once you have any JNLP File available on the BC server. BTW - another tip is that the word 'I' should always be upper case. SignatureAndrew Thompson http://www.athompson.info/andrew/ > >I have added a link to this on opening pagehttp://www.britishcomputercolleges.com > I don't see it. Sorry Andrew Try this link http://www.britishcomputercolleges.com/vu/grapheasy.jnlp The testpage is http://britishcomputercolleges.com/vu/testjnlp.html This simply return the xml nothing else, so it must be what you said of the server not returning MIME format >> >I have added a link to this on opening pagehttp://www.britishcomputercolleges.com ... >Try this link http://www.britishcomputercolleges.com/vu/grapheasy.jnlp Yes. I see it now. >The testpage is http://britishcomputercolleges.com/vu/testjnlp.html > >This simply return the xml nothing else, so it must be what you said >of the server not returning MIME format OK - strong suspicions are good, but facts are better. In cases like this, I surf on over to Roedy's site to the neat little mime-type checker applet. <http://mindprod.com/jgloss/mime.html> If we click 'OK' for the trusted code, paste the JNLP URL into the top text field then click to 'Test' the server, we can see.. yep. server MIME type: text/plain proper MIME type: application/x-java-jnlp-file That server is definitely returning the wrong content-type for JNLP files. Ask your server people (very nicely) to add 'application/x-java-jnlp-file' for file type 'jnlp', and we should be able to see it launched, rather than rendered as XML in the browser. SignatureAndrew Thompson http://www.athompson.info/andrew/ > >> >I have added a link to this on opening pagehttp://www.britishcomputercolleges.com > Ask your server people (very nicely) to add [quoted text clipped - 4 lines] > -- > Andrew Thompsonhttp://www.athompson.info/andrew/ I will do so later today. I have made a little amendment to GraphEasyRect, the recent version shows coordiante points as one moves the cursor along the canvas. This should come in handy to see the points on the graph line. On another note, I was trying to edit and save a data file which is part of the GraphEasyRect.jar I used the ZipOutputStream, DataOutputStream, and ZipEntry classes to manipulate this datafile. When I ran the program it recreated the Jar file with just this datafile and all other class file contained in GraphEasyRect.jar disappeared. I suppose this happened because the only file I told the program to write was the datafile. What I am trying to do is to read from a file contained in GraphEasyRect.jar and update it. What should I do to make other files remain put in Jar file and for the program to update this datafile only I do not need code just the logical steps required for this Asad S. Yousaf >> >> >I have added a link to this on opening pagehttp://www.britishcomputercolleges.com >> Ask your server people (very nicely) to add ..correct content-type for JNLP.. >I will do so later today. Cool. Let us know when it's done, and you've checked it. It would be nice to see this new launch working off the home site. ... >On another note, I was trying to edit and save a data file which is >part of the GraphEasyRect.jar This is a very different subject, and probably best discussed in a separate thread, but my basic advice is "don't do that". It will be virtually impossible to achieve that in a sandboxed app., and even for a 'full-trust' app. it is a very fragile and non-optimal strategy. ... >What I am trying to do is to read from a file contained in >GraphEasyRect.jar and update it. What file? Why? What does it contain? Perhaps you can best answer those questions (and the ten more I will not ask yet) by describing this to me in terms of "I want to offer X to the end user", where X is the thing you are thinking of doing using Zip files and such. Note that Zip files themselves mean nothing to the end user, so there should be no mention of '..zip file..' in the 'X'. ... >I do not need code just the logical steps required for this I generally avoid giving out the logical steps to achieving 'poor strategies' - If I can find out what the end goal is, I should be able to help better. SignatureAndrew Thompson http://www.athompson.info/andrew/ > Ask your server people (very nicely) to add > 'application/x-java-jnlp-file' for file type 'jnlp', > and we should be able to see it launched, > rather than rendered as XML in the browser. I did tell my ISP to make the change, they say they have changed the MIME type Yet when I point the browser to the jnlp file it still shows the xml contents I tried going to Roedy's applet but it does not run on my machine may be because I have an earlier version of JRE running If you could try the applet to see if the correct MIME is bieng returned by the server Asad ... >I tried going to Roedy's applet but it does not run on my machine That is a pity.* >...may >be because I have an earlier version of JRE running * I am pretty sure Roedy would like some more details of the failure, and I am curious. He usually makes his applets compatible with a fairly old Java, and the only other issue is accepting the digitally signed code (which some people are not allowed to do, according to options seen in the Java Control Panel). >If you could try the applet to see if the correct MIME is bieng >returned by the server I am getting 'text/plain' here, using the mindprod applet. It also still reiterates the correct type should be 'application/x-java-jnlp-file'. And yes, it will continue to fail, so long as the wrong content type is served. I had thought this matter of the servers (in general) recognising and handling JNLP files correctly had been largely sorted, but this example does nothing for my confidence. :-( SignatureAndrew Thompson http://www.athompson.info/andrew/ > >I have added a link to this on opening pagehttp://www.britishcomputercolleges.com > > I don't see it. Try this link http://britishcomputercolleges.com/vu/testjnlp.html to test the jnlp file The jnlp file resides at http://www.britishcomputercolleges.com/vu/grapheasy.jnlp Asad > GraphEasyRectwas previously available as an applet. Now we have > converted it to a desktop standalone application that runs on [quoted text clipped - 6 lines] > > Download link is http://www.britishcomputercolleges.com/vu/GraphEasyRect.jar A newer version of GraphEasyRect.jar has been uploaded which fixes a few quirks that existed in the original version. Anyone who downloaded GraphEasyRect.jar on 26th October should download this new version as the version available on 10/26/2007 had a bug. Asad > > GraphEasyRectwas previously available as an applet. Now we have > > converted it to a desktop standalone application that runs on [quoted text clipped - 13 lines] > > Asad I don't know if anyone pointed this out, but this kind of announcements are probably best posted to comp.lang.java.announce ;) SignatureSabine Dinis Blochberger Op3racional www.op3racional.eu Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. 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