Unfortunately, I don’t believe there really is a better way of doing this due to the nature of Java’s handling of primitive types, boxing, arrays and generics. In particular: List<T>.toArray won’t work because there’s no conversion from Integer to int You can’t use int as a type argument for generics, so it would have to be an int-specific method (or one which used reflection to do … Read more
This bizarre message means that the trustStore you specified was: empty, not found, or couldn’t be opened (due to wrong/missing trustStorePassword, or file access permissions, for example). See also @AdamPlumb’s answer below.
The for loop in which you copy the values from oldscores to newscores is never run in the case of SCORES_SIZE == 1, since SCORES_SIZE – 1 == 0, and 0 < 0 is false immediately. Move the newScores[SCORES_SIZE – 1] = oldScores[0]; line outside the for loop:
Copied from the stacktrace: BeanInstantiationException: Could not instantiate bean class [com.gestEtu.project.model.dao.CompteDAOHib]: No default constructor found; nested exception is java.lang.NoSuchMethodException: com.gestEtu.project.model.dao.CompteDAOHib.<init>() By default, Spring will try to instantiate beans by calling a default (no-arg) constructor. The problem in your case is that the implementation of the CompteDAOHib has a constructor with a SessionFactory argument. By adding the @Autowired annotation to a constructor, … Read more
That’s part of the syntax of the new lambda expressions, to be introduced in Java 8. There are a couple of online tutorials to get the hang of it, here’s a link to one. Basically, the -> separates the parameters (left-side) from the implementation (right side). The general syntax for using lambda expressions is (Parameters) -> { Body } where … Read more
The >>> operator is the unsigned right bit-shift operator in Java. It effectively divides the operand by 2 to the power of the right operand, or just 2 here. The difference between >> and >>> would only show up when shifting negative numbers. The >> operator shifts a 1 bit into the most significant bit if it was a 1, and the >>> shifts in a 0 regardless. UPDATE: Let’s average 1 and 2147483647 (Integer.MAX_VALUE). We can do the … Read more
The character ‘\’ is a special character and needs to be escaped when used as part of a String, e.g., “\”. Here is an example of a string comparison using the ‘\’ character: You can also perform direct character comparisons using logic similar to the following:
The encoding in your XML and XSD (or DTD) are different.XML file header: <?xml version=’1.0′ encoding=’utf-8′?>XSD file header: <?xml version=’1.0′ encoding=’utf-16′?> Another possible scenario that causes this is when anything comes before the XML document type declaration. i.e you might have something like this in the buffer: or even a space or special character. There are some … Read more
extends is for extending a class. implements is for implementing an interface The difference between an interface and a regular class is that in an interface you can not implement any of the declared methods. Only the class that “implements” the interface can implement the methods. The C++ equivalent of an interface would be an abstract class (not EXACTLY the same … Read more
In Java, the newline and carriage return characters are both seem to be showing same effect. What are the actual differences between char literals \n and \r in Java? Note that the above asks about the \n character, not the newLine() function on BufferedWriter, and so this other question isn’t relevant.