java - What is the correct path to display an ImageIcon png file for Windows 7? -


i wanted test having program simple png image on it. wrote short program this, can't seem path right. have checked, checked again, rechecked, , quadruple checked path name not right, image not display, no matter do. used short class wrote oracle in imageicon documentation (the creaetimageicon()) accomplish this, doesn't seem help. i'll post entire program below, short.

package practiceimages;  import java.awt.borderlayout; import java.awt.toolkit;  import javax.swing.imageicon; import javax.swing.jframe; import javax.swing.jlabel;  public class imageiconguitest {      public static void main(string[] args) {         imageiconguitest gui = new imageiconguitest();         gui.display();     }      private imageicon createimageicon(string path, string description) {         java.net.url imgurl = getclass().getresource(path);         if (imgurl != null) {             return new imageicon(imgurl, description);         } else {             system.err.println("couldn't find file: " + path);             return null;         }     }      private void display() {         jframe frame = new jframe();         jlabel label = new jlabel(createimageicon(                 "users/evan/javaitems/sprites_and_other_art/green.png", "the color green"));          frame.add(borderlayout.center, label);         frame.setsize(500, 500);         frame.setvisible(true);     } }

the getresource(string) method find resources on run-time class-path of application. since image seems application resource (i.e. supplied part of application) should put on run-time class-path.

e.g. ides have place can put resources within project structure, automatically included @ run-time. move (or copy) image path.

then becomes matter of providing correct string. let imagine project set this:

  • bin
  • src
    1. com
      • our
        1. application.java
    2. resources
      • green.png

so application.java in package com.our;, while image in path resources/green.png.

if accessing image application, correct path (drum roll please..)

"/resources/green.png"

notes

  1. the leading / important. tells jre want image 'root of class-path', opposed using path relative package of class itself.
  2. correct case vital. string of "/resources/green.png" not locate image named "/resources/green.png" or "/resources/green.png".

eclipse paths

  1. right click on src directory, select properties @ bottom of menu.
    eclipse properties
  2. navigate (using normal way you'd use without eclipse) directory of location. eclipse properties showing project location
  3. then go parent directory.
  4. you should see bin directory contains classes , (hopefully) image.

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