If a client cannot do anything to recover from the exception, make it an unchecked exception. Here's the bottom line guideline: If a client can reasonably be expected to recover from an exception, make it a checked exception. Generally speaking, do not throw a RuntimeException or create a subclass of RuntimeException simply because you don't want to be bothered with specifying the exceptions your methods can throw. If an argument is null, the method might throw a NullPointerException, which is an unchecked exception. For example, a method can check if one of its arguments is incorrectly null. One case where it is common practice to throw a RuntimeException is when the user calls a method incorrectly. Thus, the compiler does not require that you catch or specify runtime exceptions (although you can). The advantage of using Google Books Downloader Lite over viewing and downloading books directly from the Google Books web page.
#Google book downloader runtime error download
Having to add runtime exceptions in every method declaration would reduce a program's clarity. Download Latest Version for Windows (148.99 kB) Google Books Downloader Lite is an open-source, lightweight utility that lets you download any book which is available in ‘full view’ from Google Books. Runtime exceptions can occur anywhere in a program, and in a typical one they can be very numerous. Such problems include arithmetic exceptions, such as dividing by zero pointer exceptions, such as trying to access an object through a null reference and indexing exceptions, such as attempting to access an array element through an index that is too large or too small.
#Google book downloader runtime error code
The next question might be: "If it's so good to document a method's API, including the exceptions it can throw, why not specify runtime exceptions too?" Runtime exceptions represent problems that are the result of a programming problem, and as such, the API client code cannot reasonably be expected to recover from them or to handle them in any way. These exceptions are as much a part of that method's programming interface as its parameters and return value. Those who call a method must know about the exceptions that a method can throw so that they can decide what to do about them. Why did the designers decide to force a method to specify all uncaught checked exceptions that can be thrown within its scope? Any Exception that can be thrown by a method is part of the method's public programming interface. Although this may seem convenient to the programmer, it sidesteps the intent of the catch or specify requirement and can cause problems for others using your classes. Both of these shortcuts allow programmers to write code without bothering with compiler errors and without bothering to specify or to catch any exceptions. If you have backed up your eBooks, there is no need to worry about the device limits because you can copy your eBook backup to any device.Because the Java programming language does not require methods to catch or to specify unchecked exceptions ( RuntimeException, Error, and their subclasses), programmers may be tempted to write code that throws only unchecked exceptions or to make all their exception subclasses inherit from RuntimeException. Here is a solution provided by Google Play store - removing ebooks from one of your devices and downloading it on another.
They do not give exactly numbers of how many devices, but if you have reached this limits, you are not able to download your Google Books any more. It means you have reached the Google Play devices limits.īut what is the Google Play device limits? The Google Play limit how many devices you can download Google Play books on at the same time. You may encounter this error message “E_GOOGLE_DEVICE_LIMIT_REACHED” when you try to download Google Play books to multiple devices. It is hard for them to read eBooks on only one device.
2 Google Play eBooks has device limit issue.Īs the developing of technology, most eBook lover own more than one digital devices, such as tablets, smartphone, laptop, eReaders and so on.
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