How to make drag drop receiving images from web browser in Java Swing? -

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i trying receive images web browser via drag , drop, failing:

package tests;  import javax.swing.*; import java.awt.*; import java.awt.datatransfer.dataflavor;  public class jdragdroptest extends jframe {      public jdragdroptest() throws headlessexception {          super("dragdroptest");          setlayout(new borderlayout());          add(new jscrollpane(new jtextarea() {{             settransferhandler(new transferhandler() {                 @override                 public boolean canimport(transfersupport support) {                     return true;                 }                  @override                 public boolean importdata(transfersupport support) {                     int i=0;                     append("flavors:\n");                     for( dataflavor flavor : support.getdataflavors() ) {                         append(string.valueof(i+1) + "): " + flavor.tostring() + "\n");                         i++;                     }                     append("");                      return true;                 }             });         }}), borderlayout.center);      }      public static void main(string[] args) {          swingutilities.invokelater(new runnable() {             public void run() {                  jframe frame = new jdragdroptest();                  frame.setdefaultcloseoperation(jframe.exit_on_close);                 frame.setsize(800, 600);                 frame.setlocationrelativeto(null);                 frame.setvisible(true);             }         });      } }

when dragging google chrome, getting typeout of 131 flavours none of image.

some of them have representation class of inputstream, reading of them , getting text img src=.

when dragging internet explorer, getting empty list.

when trying drag firefox, fail start drag.

os window 8.1 prof.

i image itself, not it's url, not it's img tag. possible?

here's attempt(not tested):

  • i testing windows 7, jdk 1.8.0_51, firefox 39.0, chrome 45.0, stackoverflow profile icon.

enter image description here

import java.awt.*; import java.awt.datatransfer.*; import java.io.*; import java.util.list; import javax.swing.*;  public class jdragdroptest2 {   public jcomponent makeui() {     final jlabel label = new jlabel("drop here image web browser");     label.settransferhandler(new transferhandler() {       @override public boolean canimport(jcomponent component, dataflavor[] flavors) {         return true;       }       @override public boolean importdata(jcomponent component, transferable transferable) {         label.settext("");         try {           (dataflavor flavor : transferable.gettransferdataflavors()) {             system.out.println(flavor);             if (dataflavor.imageflavor.equals(flavor)) {               object o = transferable.gettransferdata(dataflavor.imageflavor);               if (o instanceof image) {                 label.seticon(new imageicon((image) o));                 return true;               }             }             if (dataflavor.javafilelistflavor.equals(flavor)) {               object o = transferable.gettransferdata(dataflavor.javafilelistflavor);               if (o instanceof list) {                 list list = (list) o;                 (object f : list) {                   if (f instanceof file) {                     file file = (file) f;                     system.out.println(file);                     if (!file.getname().endswith(".bmp")) {                       label.seticon(new imageicon(file.getabsolutepath()));                       return true;                     }                   }                 }               }             }           }         } catch (exception ex) {           ex.printstacktrace();         }         return false;       }       @override public int getsourceactions(jcomponent component) {         return copy;       }     });     return new jscrollpane(label);   }   public static void main(string... args) {     eventqueue.invokelater(new runnable() {       @override public void run() {         createandshowgui();       }     });   }   public static void createandshowgui() {     jframe frame = new jframe();     frame.setdefaultcloseoperation(windowconstants.exit_on_close);     frame.getcontentpane().add(new jdragdroptest2().makeui());     frame.setsize(320, 240);     frame.setlocationrelativeto(null);     frame.setvisible(true);   } }

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