How to correctly get image from Resources folder in NetBeans

Question

I have a Java Project in NetBeans 7 0   I want to add some image to some label dynamically  The image will differ depending on the state of the program   I put one such image   filling jpg   in the  resources  folder of my project   I want to reach this file correctly  not by absolute or relative path  because that will cause problems when I build the jar file    So I found this method   ImageIcon fillingIcon   new ImageIcon getClass   getClassLoader   getResource  filling jpg     labelFontFilling setIcon fillingIcon     It keeps give me java lang NullPointerException  But I am sure that there is that image  because I can assign the image to the label from the NetBeans Properties menu for that label  but I don t want this  I want to add the image by Java code    What am I doing wrong  and how can I get that image correctly

User · Answer

For me it worked like I had images in icons folder under src and I wrote below code   new ImageIcon getClass   getResource   icons rsz measurment 01 png

User · Answer

This was a pain  using netBeans IDE 7 2    You need to remember that Netbeans cleans up the Build folder whenever you rebuild  so Add a resource folder to the src folder     project    src   project package folder  contains  java files  resources           whatever name you want  images  optional subfolders     After the clean build this structure is propogated into the Build folder     project    build   classes    project package folder  contains generated  class files  resources               your resources  images        your optional subfolders         To access the resources   dlabel   new JLabel new ImageIcon getClass   getClassLoader   getResource  resources images logo png        and   if  common readFile getClass   getResourceAsStream   resources allwise ini    buf  equals  OK        worked for me  Note that in one case there is a leading     and in the other there isn t  So the root of the path to the resources is the  classes  folder within the build folder   Double click on the executable jar file in the dist folder  The path to the resources still works

User · Answer

Thanks  Valter Henrique  with your tip i managed to realise  that i simply entered incorrect path to this image  In one of my tries i use      String pathToImageSortBy    resources testDataIcons filling png       ImageIcon SortByIcon   new ImageIcon getClass   getClassLoader   getResource pathToImageSortBy      But correct way was use name of my project in path to resource  String pathToImageSortBy    nameOfProject resources testDataIcons filling png   ImageIcon SortByIcon   new ImageIcon getClass   getClassLoader   getResource pathToImageSortBy

User · Answer

I have a slightly different approach that might be useful more beneficial to some   Under your main project folder  create a resource folder   Your folder structure should look something like this    Project Folder   build dist lib nbproject resources src    Go to the properties of your project   You can do this by right clicking on your project in the Projects tab window and selecting Properties in the drop down menu   Under categories on the left side  select Sources   In Source Package Folders on the right side  add your resource folder using the Add Folder button   Once you click OK  you should see a Resources folder under your project     You should now be able to pull resources using this line or similar approach   MyClass class getResource   main jpg      If you were to create a package called Images under the resources folder  you can retrieve the resource like this   MyClass class getResource   Images main jpg

[java] How to correctly get image from 'Resources' folder in NetBeans

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