AppletTalk.com Java discussions newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Text Selection          AppletTalk.com Forum Index -> Java Help View previous topic :: View next topic   Author Message eNc^ Guest Posted: Wed Jun 14, 2006 3:52 am    Post subject: Text Selection Hi i'm trying to make a button's action method perform a 'delete' on some text in a JTextArea(). The idea is that I do this textArea.setText(textArea.getText(0,textArea.getSelectionStart) + "" + textArea.getText(textArea.getSelectionEnd,textArea.getDocument.getLength()); Basically if the user has seleted text in a paragraph, and the user pushes this button (delete). The function will then remove the selected text from the document. The code which (above) has been shown by me doesn't work (gives outOfBoundsException)and I would like to know if there is a way to remove selected text from a JTextArea on the push of the button. Back to top Atif Guest Posted: Wed Jun 14, 2006 7:10 am    Post subject: Re: Text Selection eNc^ wrote: Quote: Hi i'm trying to make a button's action method perform a 'delete' on some text in a JTextArea(). The idea is that I do this textArea.setText(textArea.getText(0,textArea.getSelectionStart) + "" + textArea.getText(textArea.getSelectionEnd,textArea.getDocument.getLength()); Basically if the user has seleted text in a paragraph, and the user pushes this button (delete). The function will then remove the selected text from the document. The code which (above) has been shown by me doesn't work (gives outOfBoundsException)and I would like to know if there is a way to remove selected text from a JTextArea on the push of the button. took me a while to figure out, next time post a small code snippet to work off! remember it's " getText(offset, LENGTH) " textArea.getDocument.getLength() gives you the length of the ENTIRE document. you only want the length of the string after the Selection end. that's why you were getting out of bounds errors, because you wanted the offset plus the length of the entire document, so that's obviously out of bounds. do this: <code> int a = textArea.getSelectionStart() ; int b = textArea.getSelectionEnd(); int c = textArea.getDocument().getLength(); String beforeS = textArea.getText(0,a ) ; String afterS = textArea.getText(b,c-b ); textArea.setText(null); textArea.setText(beforeS+""+afterS); </code> lesson learned: read parameters carefully . 'cause it would've been correct if the 2nd parameter was asking for the 2nd offset. Back to top eNc^ Guest Posted: Thu Jun 15, 2006 3:42 am    Post subject: Re: Text Selection Thank you so much, it worked. Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         AppletTalk.com Forum Index -> Java Help All times are GMT Page 1 of 1   Jump to: Select a forum Java Newsgroups----------------Java DiscussionsWeb-based java games comp.lang.java 3D Graphics API's for Java Java: Support and criticism Java System Announcements comp.lang.java.api JavaBeans Java and CORBA Java and Databases comp.lang.java.developer Java GUI Toolkits Java Help comp.lang.java.javascript JVM, native methods and hardware comp.lang.java.misc Java Language Programming Security and Java comp.lang.java.setup Java Software Tools comp.lang.java.tech ibm.software.java.linux  Non-English Java Newsgroups----------------Java Language (German)Language Java (Français)Java (Italian)  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.