I'm happy to announce that Doodler is now able to save and load images from a user's computer. This was accomplished by "signing" the JAR file. This is required in order for the program to request the needed I/O permissions. However, since I signed the file myself, the Java Virtual Machine complains that there is no guarantee the file is actually mine. But you trust me, right? In order to have a fully signed JAR I would need to have an independent firm like VeriSign look at the file, but this is unnecessary for my humble projects. Thus, you might see a dialog warning you about the file. I consider this a small price to pay for Doodler to have its full functionality.