How can I find the format of a .class file/a JPG/a PNG file/any file?
There is a great website that maintains descriptions and links to descriptions of hundreds of file formats. The site is at: http://www.wotsit.org/ It shows you how the files are structured, and makes it a lot simpler for you to write code that creates/decodes such a file. • (Sect. 20) Why not start up one copy of the JVM and share it among many Java programs? If the JVM takes about 15MB (say) in overhead, and a program takes 3MB, then starting up a fresh JVM for each program is slow and wasteful. If a single copy of the JVM and libraries could instead be shared among multiple Java applications there would be less overhead and everything would run faster. That observation was the guiding force behind the echidna project to support a JVM that could run multiple applications. See the site http://www.javagroup.org/echidna/ for more details. • (Sect. 20) How can I edit sound files? The JaWavedit java code lets you edit .wav and .au files. It can be found at http://www.bome.com/JaWavedit/. I
