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Handling InterruptedException in Java
...t an InterruptedException is a perfectly valid result of the method call.
Now, if the method you're calling throws such exception, what should your method do? You can figure out the answer by thinking about the following:
Does it make sense for the method you are implementing to throw an Interrupt...
How to unit test an object with database queries
...r
{
public Foo[] GetAllFoos() {
return Foo.GetAll();
}
}
Now in your unit test, you create a mock of FooDataProvider, which allows you to call the method GetAllFoos without having to actually hit the database.
class BarTests
{
public TestGetAllFoos() {
// here we set u...
Copying files from one directory to another in Java
...
For now this should solve your problem
File source = new File("H:\\work-temp\\file");
File dest = new File("H:\\work-temp\\file2");
try {
FileUtils.copyDirectory(source, dest);
} catch (IOException e) {
e.printStackTrace...
How and when to use ‘async’ and ‘await’
...t need the result of LongRunningOperationAsync can be done here
//and now we call await on the task
int result = await longRunningTask;
//use the result
Console.WriteLine(result);
}
public async Task<int> LongRunningOperationAsync() // assume we return an int from this long...
How can I convert JSON to a HashMap using Gson?
...
I know this is a fairly old question, but I was searching for a solution to generically deserialize nested JSON to a Map<String, Object>, and found nothing.
The way my yaml deserializer works, it defaults JSON objects to ...
What exactly does @synthesize do?
...ame into a situation where I had to read and modify such code.
But if you now think "Hey, @synthesize is not important any more as we use a newer compiler" you are wrong! Your class then will result in having two ivars, namely someInt plus an autogenerated _someInt variable. Thus self.someInt and s...
How to use java.String.format in Scala?
...ethod of a string. But if I place %1, %2, etc. in the string, java.util.UnknownFormatConversionException is thrown pointing to a confusing Java source code piece:
...
Eclipse git checkout (aka, revert)
... not already show your repository, click on the project or file
You should now see the files you modified in the Unstaged Changes section
Double-click on the unstaged file
You now see a compare view with your version on the left and the version before the changes on the right
Now, to undo only som...
Time complexity of Euclid's Algorithm
...o follow what happens over two iterations:
a', b' := a % b, b % (a % b)
Now a and b will both decrease, instead of only one, which makes the analysis easier. You can divide it into cases:
Tiny A: 2a <= b
Tiny B: 2b <= a
Small A: 2a > b but a < b
Small B: 2b > a but b < a
Equal...
IntelliJ inspection gives “Cannot resolve symbol” but still compiles code
...
The menu option is now "File | Invalidate Caches/Restart" (Android Studio 0.8.2, linux).
– CoatedMoose
Jul 15 '14 at 16:17
2...