To say that, we have to know what we consider to be a good interview. We should have a metric that can tell us which interview is “better”. Candidates often tell me: “This was the best interview of my life.”, even when my conclusion is not to recommend them for hire. Although...
Values stored in ThreadLocal can be inherited from one thread to another. To prevent the other threads from reading an updated value (which the API should explicitly prevent; it’s threadlocal, after all), the inheriting thread must create copies. These drive up memory use, especially when t...
This directory is named by the system property user.dir, and is typically the directory in which the Java virtual machine was invoked. The parent of an abstract pathname may be obtained by invoking the getParent() method of this class and consists of the pathname's prefix and each name ...
The change was made to support applications which have been designed to depend on this behavior. Note that this change is applicable to 8u20, 7u65, 6u85 and 5.0u75 releases. For JDK 9, the new behavior where the system wide/singleton ORB needs to be visible to the system class ...
If there already is one, it will just be reused. This behavior is particularly useful for chaining bean invocations together. The first bean will start a transaction for you, which gets propagated to all other beans. The method checkout() starts a transaction that gets "reused" by the ...
In the Source Editor or Projects window, select the type to which you want to apply the operation. The type can be a class, interface, or enumeration. Choose Refactor > Use Supertype Where Possible. In the Select Supertype to Use list, select the supertype that you want to be referenced ...
A special#LinkedHashMap(int,float,boolean) constructoris provided to create a linked hash map whose encounter order is the order in which its entries were last accessed, from least-recently accessed to most-recently (access-order). This kind of map is well-suited to building LRU caches. Invo...
There are a number of different approaches to implementing multiple dispatching which benefit fromenums. Using constant-specific methods Because constant-specific methods allow you to provide different method implementations for eachenuminstance, they might seem like a perfect solution for setting up multi...
out.println("Studying all day long"); } } // End code from filename: Main.java // Code from filename: Second.java class Second { public static void main(String[] args) { // create an object of the Student class (which inherits attributes and methods from Main) Student myObj = ...
even if the backing store becomes unavailable. Several methods, likeflush, have semantics that prevent them from operating if the backing store is unavailable. Ordinary applications should have no need to invoke any of these methods, which can be identified by the fact that they are declared to...