system.exit

This question already has an answer here: Difference in System. exit(0) , System.exit(-1), System.exit(1 ) in Java 11 answers Can any one share to me difference between System.exit(0) and System.exit(-1) it is helpful if you explain with example. It's just the difference in terms of the exit code of the process. So if anything was going to take action based on the exit code (where 0 is typically success, and non-zero usually indicates an error) you can control what they see. As an example, take this tiny Java program, which uses the number of command line arguments as the exit code: public

I know system.exit(0) should not be used. I have read plenty of tutorials as well stating why it's not recommended for exiting applications and finish() is a better alternative ,but in very rare case when this dirty workaround is used than my main question is can it harm the android device or any aspect of device if used? short answer: No. long answer: No, it doesn't harm the device or any aspect of the device. It just removes the app from memory and cleans up all used resources. If you have any files open, they can become corrupted, but the filesystem won't. Android should release all and any

Is it possible to write a method that System.exit will call when you terminate a program? Petar Minchev Use Runtime.getRuntime().addShutdownHook(Thread) . Shutdown hooks are the answer... here is an article on them . They do not come without issues (some of them are discussed in the article). You can use a shutdown hook. http://download.oracle.com/javase/6/docs/api/java/lang/Runtime.html#addShutdownHook(java.lang.Thread ) Note that shutdown hooks will not run if the VM aborts abnormally or Runtime.halt(int) is called. lobster1234 You can add a VM shutdown hook . Look into shutdown hooks, see