You can’t set the precision of a double (or Double) to a specified number of decimal digits, because floating-point values don’t have decimal digits. They have binary digits. You will have to convert into a decimal radix, either via BigDecimal or DecimalFormat, depending on what you want to do with the value later. See also my answer to this … Read more
Look at the exception: This means that there’s no bean available to fulfill that dependency. Yes, you have an implementation of the interface, but you haven’t created a bean for that implementation. You have two options: Annotate UserDaoImpl with @Component or @Repository, and let the component scan do the work for you, exactly as you have done with UserService. Add the … Read more
Thread has a method that does that for you join which will block until the thread has finished executing.
Sergio: You should use BLOB. It is pretty straighforward with JDBC. The problem with the second code you posted is the encoding. You should additionally encode the bytes to make sure none of them fails. If you still want to write it down into a String you can encode the bytes using java.util.Base64. Still you should use … Read more
One rule-of-thumb: ask yourself “Does it make sense to call this method, even if no object has been constructed yet?” If so, it should definitely be static. So in a class Car you might have a method: …which would be static, because one might want to know what 35mpg converts to, even if nobody has ever built … Read more
You have to tell your compiler where is the include directory. Something like this: But it depends on your makefile.
The message “Picked up _JAVA_OPTIONS” implies that the Java runtime has found this setting in your environment variables. The solution depends on which operating system you are running. But assuming it is Windows, there are two possibilities: The most likely is that it is picking it up from the System or User environment. Try opening … Read more
The issue was in your computerMove logic. This should work for you, just copy paste this in place of your computerMove. Now as to why your code didn’t work:- Your code: The while loop looks at the position and sees that there is no ‘-‘, thus runs. Then inside your while loop you have a … Read more
The immediate problem is due to you using <= temp.length() instead of < temp.length(). However, you can achieve this a lot more simply. Even if you use the string approach, you can use: You need to make the same change to use < newGuess.length() when printing out the content too – otherwise for an array of length 4 (which has … Read more
Some Notes: 1- in.nextInt(); reads an integer from the user, blocks until the user enters an integer into the console and presses ENTER. The result integer has to be saved in order to use it later on, and to do so save it into a variable, something like this: In your code, you need to assign the 3 … Read more