How to get real path of an image in Java?

get path of image file that is outside the project in java

I use this code to display image that locates outside the my java project, but I got NullPointerException every time and I can only use images that are inside my project directory. why ? Icon welcomeImg = new ImageIcon(getClass().getResource("D:/img/welcome.png")); or Icon welcomeImg = new ImageIcon(getClass().getResource("D://img/welcome.png")); JLabel welcomingLb = new JLabel(welcomeImg);
Answer:

You do not need to use the http://docs.oracle.com/javase/6/docs/api/java/lang/ClassLoader.html class to access your file since you are giving its full path. Try instead : Icon welcomeImg = new ImageIcon("D:/img/welcome.png"); Source : Javadoc of http://docs.oracle.com/javase/1.4.2/docs/api/javax/swing/ImageIcon.html#ImageIcon%28java.lang.String%29

sasola at Stack Overflow Visit the source

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Other answers

http://docs.oracle.com/javase/6/docs/api/java/lang/Class.html#getResource%28java.lang.String%29 expects the resource to be on the classpath. If you want to read from a random file, use a http://docs.oracle.com/javase/6/docs/api/java/io/File.html, or use the http://docs.oracle.com/javase/6/docs/api/javax/swing/ImageIcon.html#ImageIcon%28java.lang.String%29.

Dave Newton

See: http://stackoverflow.com/questions/2343187/loading-resources-using-getclass-getresource Basically when you use getResource it is expecting the file to be on the Classpath. There is also a constructor for ImageIcon that takes a String filename, so you can pass the path to the Icon file directly. Check out the http://docs.oracle.com/javase/7/docs/api/javax/swing/ImageIcon.html#ImageIcon%28java.lang.String%29

DaveJohnston

You can try using a File, like so: File f = new File("C:\\folder\\stuff\\MyFile.class");

f1dave

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