Re: TextArea cannot be resolved to a type
Hi Moe, In addition to Reinier's suggestions, you could also try using JSONP or a mashup service depending on how much control you have over the servers hosting the external URLs that you are requesting from. You can read more about the technique on Dan Morrill's article on the subject (link below), which I've personally been meaning to update. If you have access to the external server that you want to interoperate with, you could potentially create a mashup service that your main application could use through the JSONP technique. Using GWT for JSON Mashups: http://code.google.com/docreader/#p=google-web-toolkit-doc-1-5s=google-web-toolkit-doc-1-5t=Article_UsingGWTForJSONMashups Hope that helps, -Sumit Chandel On Sat, Nov 29, 2008 at 4:33 PM, Reinier Zwitserloot [EMAIL PROTECTED]wrote: Do it on the server. If that is no option, write desktop software (something you install and that doesn't run in a browser at all). You can also use web based platforms that allow signing / trusting, such as applets, but be aware that users will need to hand the keys to the kingdom to your app, and in general, the vomitous stream of text filled with red, screamy words, and dangerous looking symbols in the popup that shows up when you ask for this trust makes users have a mild heart infarction, and blame you for it. On Nov 29, 9:06 pm, moe374 [EMAIL PROTECTED] wrote: Thank you for your response. I did actually find the getText() and setText() methods before writting this, I was just a little unsure as to how to implement them. the URL feature is an essential element of the program I am trying to write. Since I can't do this with GWT and I can't do this using an applet either (applets can only connect to the same server as well i believe), I think I have hit a dead end. What other options do I have? What do you recommend I use to create this type of web application? Thanks for your help. On Nov 29, 11:40 am, Reinier Zwitserloot [EMAIL PROTECTED] wrote: Go through the GWT Getting started guide. You've screwed up your installation somehow, or you're not using the right command line. It's not a matter of code, it's just that some tool in the chain can't find the TextArea class code. For the rest - really, this is a forum, not a university. Just go through the getting started guide and learn GWT. You should also have a look at the javadoc for all GWT classes. For example, the TextArea javadoc has a getText() method, and a setText() method. You can not use URL in GWT. The GWT Documentation (Notice a pattern?) has a nice listing of which classes are supported. java.net.* is not in it. This isn't because the GWT team is lazy, it's simply because javascript simply can't do this, so there's no way the GWT compiler can compile that code for you. If the URL you want to read in is from the same server that served the webpage (the EXACT same server. Same protocol, same exact server name, same port), then you can use RequestBuilder (A GWT class. Look it up in the .. (drum roll please!) documentation!) which is capable of downloading the contents. On the web, you can pretty much only ever download everything in one go, there are no streams, just complete data. If you need to process a couple megabytes on the client... you're out of luck, then. Maybe your server can download the big data in chunks and pass it to the client in a flurry of requests instead. On Nov 29, 7:50 am, moe374 [EMAIL PROTECTED] wrote: Hello. I have just begun learning java (about 2 months ago) and am now trying to develop a couple applications for the web using java and the GWT. I am having some difficulty and hoping someone can help me out. My first problem I am having is I am getting this error message TextArea cannot be resolved to a type when I am trying to create a text area. I get the error message twice, and for the same line in my code which is TextArea ta = new TextArea(); Is there a line (or multiple lines) of code I have to implement before I can implement the TextArea object? Also, I need to allow the user to paste some information into this text box and allow me to store that information in a variable, and then do something with the information, and then output some information to the user (even in the same text box is fine). Can some one please help me get started on this? Finally, I was wondering if the GWT supports reading the HTML file of a URL, which would normally be done by something like this: URL results = new URL(http://www.some-url.com;); BufferedReader in2 = new BufferedReader( new InputStreamReader( results.openStream())); String inputLine = in2.readLine(); Thank you very much.- Hide quoted text - - Show quoted text -
Re: TextArea cannot be resolved to a type
Go through the GWT Getting started guide. You've screwed up your installation somehow, or you're not using the right command line. It's not a matter of code, it's just that some tool in the chain can't find the TextArea class code. For the rest - really, this is a forum, not a university. Just go through the getting started guide and learn GWT. You should also have a look at the javadoc for all GWT classes. For example, the TextArea javadoc has a getText() method, and a setText() method. You can not use URL in GWT. The GWT Documentation (Notice a pattern?) has a nice listing of which classes are supported. java.net.* is not in it. This isn't because the GWT team is lazy, it's simply because javascript simply can't do this, so there's no way the GWT compiler can compile that code for you. If the URL you want to read in is from the same server that served the webpage (the EXACT same server. Same protocol, same exact server name, same port), then you can use RequestBuilder (A GWT class. Look it up in the .. (drum roll please!) documentation!) which is capable of downloading the contents. On the web, you can pretty much only ever download everything in one go, there are no streams, just complete data. If you need to process a couple megabytes on the client... you're out of luck, then. Maybe your server can download the big data in chunks and pass it to the client in a flurry of requests instead. On Nov 29, 7:50 am, moe374 [EMAIL PROTECTED] wrote: Hello. I have just begun learning java (about 2 months ago) and am now trying to develop a couple applications for the web using java and the GWT. I am having some difficulty and hoping someone can help me out. My first problem I am having is I am getting this error message TextArea cannot be resolved to a type when I am trying to create a text area. I get the error message twice, and for the same line in my code which is TextArea ta = new TextArea(); Is there a line (or multiple lines) of code I have to implement before I can implement the TextArea object? Also, I need to allow the user to paste some information into this text box and allow me to store that information in a variable, and then do something with the information, and then output some information to the user (even in the same text box is fine). Can some one please help me get started on this? Finally, I was wondering if the GWT supports reading the HTML file of a URL, which would normally be done by something like this: URL results = new URL(http://www.some-url.com;); BufferedReader in2 = new BufferedReader( new InputStreamReader( results.openStream())); String inputLine = in2.readLine(); Thank you very much. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: TextArea cannot be resolved to a type
Thank you for your response. I did actually find the getText() and setText() methods before writting this, I was just a little unsure as to how to implement them. the URL feature is an essential element of the program I am trying to write. Since I can't do this with GWT and I can't do this using an applet either (applets can only connect to the same server as well i believe), I think I have hit a dead end. What other options do I have? What do you recommend I use to create this type of web application? Thanks for your help. On Nov 29, 11:40 am, Reinier Zwitserloot [EMAIL PROTECTED] wrote: Go through the GWT Getting started guide. You've screwed up your installation somehow, or you're not using the right command line. It's not a matter of code, it's just that some tool in the chain can't find the TextArea class code. For the rest - really, this is a forum, not a university. Just go through the getting started guide and learn GWT. You should also have a look at the javadoc for all GWT classes. For example, the TextArea javadoc has a getText() method, and a setText() method. You can not use URL in GWT. The GWT Documentation (Notice a pattern?) has a nice listing of which classes are supported. java.net.* is not in it. This isn't because the GWT team is lazy, it's simply because javascript simply can't do this, so there's no way the GWT compiler can compile that code for you. If the URL you want to read in is from the same server that served the webpage (the EXACT same server. Same protocol, same exact server name, same port), then you can use RequestBuilder (A GWT class. Look it up in the .. (drum roll please!) documentation!) which is capable of downloading the contents. On the web, you can pretty much only ever download everything in one go, there are no streams, just complete data. If you need to process a couple megabytes on the client... you're out of luck, then. Maybe your server can download the big data in chunks and pass it to the client in a flurry of requests instead. On Nov 29, 7:50 am, moe374 [EMAIL PROTECTED] wrote: Hello. I have just begun learning java (about 2 months ago) and am now trying to develop a couple applications for the web using java and the GWT. I am having some difficulty and hoping someone can help me out. My first problem I am having is I am getting this error message TextArea cannot be resolved to a type when I am trying to create a text area. I get the error message twice, and for the same line in my code which is TextArea ta = new TextArea(); Is there a line (or multiple lines) of code I have to implement before I can implement the TextArea object? Also, I need to allow the user to paste some information into this text box and allow me to store that information in a variable, and then do something with the information, and then output some information to the user (even in the same text box is fine). Can some one please help me get started on this? Finally, I was wondering if the GWT supports reading the HTML file of a URL, which would normally be done by something like this: URL results = new URL(http://www.some-url.com;); BufferedReader in2 = new BufferedReader( new InputStreamReader( results.openStream())); String inputLine = in2.readLine(); Thank you very much.- Hide quoted text - - Show quoted text - --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: TextArea cannot be resolved to a type
Do it on the server. If that is no option, write desktop software (something you install and that doesn't run in a browser at all). You can also use web based platforms that allow signing / trusting, such as applets, but be aware that users will need to hand the keys to the kingdom to your app, and in general, the vomitous stream of text filled with red, screamy words, and dangerous looking symbols in the popup that shows up when you ask for this trust makes users have a mild heart infarction, and blame you for it. On Nov 29, 9:06 pm, moe374 [EMAIL PROTECTED] wrote: Thank you for your response. I did actually find the getText() and setText() methods before writting this, I was just a little unsure as to how to implement them. the URL feature is an essential element of the program I am trying to write. Since I can't do this with GWT and I can't do this using an applet either (applets can only connect to the same server as well i believe), I think I have hit a dead end. What other options do I have? What do you recommend I use to create this type of web application? Thanks for your help. On Nov 29, 11:40 am, Reinier Zwitserloot [EMAIL PROTECTED] wrote: Go through the GWT Getting started guide. You've screwed up your installation somehow, or you're not using the right command line. It's not a matter of code, it's just that some tool in the chain can't find the TextArea class code. For the rest - really, this is a forum, not a university. Just go through the getting started guide and learn GWT. You should also have a look at the javadoc for all GWT classes. For example, the TextArea javadoc has a getText() method, and a setText() method. You can not use URL in GWT. The GWT Documentation (Notice a pattern?) has a nice listing of which classes are supported. java.net.* is not in it. This isn't because the GWT team is lazy, it's simply because javascript simply can't do this, so there's no way the GWT compiler can compile that code for you. If the URL you want to read in is from the same server that served the webpage (the EXACT same server. Same protocol, same exact server name, same port), then you can use RequestBuilder (A GWT class. Look it up in the .. (drum roll please!) documentation!) which is capable of downloading the contents. On the web, you can pretty much only ever download everything in one go, there are no streams, just complete data. If you need to process a couple megabytes on the client... you're out of luck, then. Maybe your server can download the big data in chunks and pass it to the client in a flurry of requests instead. On Nov 29, 7:50 am, moe374 [EMAIL PROTECTED] wrote: Hello. I have just begun learning java (about 2 months ago) and am now trying to develop a couple applications for the web using java and the GWT. I am having some difficulty and hoping someone can help me out. My first problem I am having is I am getting this error message TextArea cannot be resolved to a type when I am trying to create a text area. I get the error message twice, and for the same line in my code which is TextArea ta = new TextArea(); Is there a line (or multiple lines) of code I have to implement before I can implement the TextArea object? Also, I need to allow the user to paste some information into this text box and allow me to store that information in a variable, and then do something with the information, and then output some information to the user (even in the same text box is fine). Can some one please help me get started on this? Finally, I was wondering if the GWT supports reading the HTML file of a URL, which would normally be done by something like this: URL results = new URL(http://www.some-url.com;); BufferedReader in2 = new BufferedReader( new InputStreamReader( results.openStream())); String inputLine = in2.readLine(); Thank you very much.- Hide quoted text - - Show quoted text - --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
