if-else-if statement is used when we need to check multiple conditions. In this statement we have only one “if” and one “else”, however we can have multiple “else if”. It is also known asif else if ladder. This is how it looks: if(condition_1){/*if condition_1 is true ex...
Using the switch statement means that the VM will go straight to the appropiate branch of execution, without having to evaluate all the other conditions first. It strikes me (and please someone correct me if I'm wrong) that the switch statement is the neater of the two, plus it makes th...
If no provider is specified, getInstance searches the registered providers for an implementation of the requested cryptographic service associated with the named algorithm. In any given Java Virtual Machine (JVM), providers are installed in a given preference order, the order in which the provider ...
Condition factors out the Object monitor methods (Object#wait() wait, Object#notify notify and Object#notifyAll notifyAll) into distinct objects to give the effect of having multiple wait-sets per object, by combining them with the use of arbitrary Lock implementations....
Readers need to analyze the final results of the conditional expression to decide what statement is to be executed in certain conditions. Positive example: // please refer to the pseudo-code as follows boolean existed = (file.open(fileName, "w") != null) && (...) || (...); if (...
of free software (and charge for this service if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs; and that you know you can do these things. To protect your rights, we need to make...
Description:As of JDK 7, on Windows, thejava.io.FilesetReadOnlyandsetWritablemethods no longer set the DOS readonly attribute on directories. This means that these methods will fail, by returning false, if the file is a directory. To preserve the relationship withcanWrite, thecanWritemethod ...
An abstract class may be declared an entity by decorating the class with@Entity. Abstract entities differ from concrete entities only in that they cannot be instantiated. Abstract entities can be queried just like concrete queries. If an abstract entity is the target of a query, the query opera...
Note: If you are new to Java SE7, you should be surprised by the fromFile() method on two accounts: The LinkedList uses the diamond syntax (<>) to let the compiler infer the generic type parameters. Since lines is a List<String>, LinkedList<> is expanded as LinkedList<String>. The ...
Readers need to analyze the final results of the conditional expression to decide what statement will be executed in certain conditions. Positive example: // please refer to the pseudo-code as follows boolean existed = (file.open(fileName, "w") != null) && (...) || (...); if (...