On Sun, Jan 30, 2011 at 9:26 AM, Jonas Enlund <jonas.enl...@gmail.com> wrote: > Hi. > I'm trying to create a java.io.Writer proxy (which writes to a > JTextArea) but I can't get it to work. > Here is my clojure code so far: > > (def text-area (javax.swing.JTextArea.)) > > (def frame > (let [f (javax.swing.JFrame.)] > (.. f getContentPane (add text-area)) > (.setMinimumSize f (java.awt.Dimension. 200 200)) > (.setVisible f true) > f)) > > (def text-area-writer > (proxy [java.io.Writer] [] > (close []) > (flush []) > (write [^chars chrs ^int offs ^int len] > (.append text-area (String. chrs offs len))))) > > When I load the code above I get an "IllegalArgumentException: Unable > to resolve classname: int" so I think I'm not type hinting correctly.
Indeed. You can't (in 1.2 at least) type hint "int" though you can "ints" (array of int). Note that int is a primitive type while array of int is a reference type. Type hinting as Integer shouldn't throw exceptions, but you can probably omit all but the chars hint and have the correct String constructor overload selected. Also note that while text area .append is safe to call from off the EDT, other Swing methods mostly aren't, and it's something to watch for if you do anything similar to this with other Swing components, and wherever you construct your text area and its surrounds. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
