Programmer Think

1 Builder schema concept 1.1 Introduction Builder pattern is a step-by-step creation pattern for complex objects, which allows users to control the object's construction process more finely without knowing the details of the internal construction. The purpose of this model is to decouple the process of building complex objects from its com ...

The previous article has analyzed the Executor framework and members of its family in detail, paving the way for the introduction of this article, so analyzing the core implementation principles of ThreadPoolExecutor is a call to action. Go straight to the topic! Start with the construction method of ThreadPoolExecutor. Construction method o ...

4.1 Boolean Logic Boolean comparison operator 　　==  !=   <   >    <=    >= Boolean Operator for Boolean Value Processing ! &|^ (XOR) Conditional Boolean Operator &&|| Better performance than & and | e.g. & & just judge the previous Boolean value to be false and the overall value to be false without calculat ...

Short Book Occupy the wolfPlease note the origin of the original, thank you! background Before introducing TLAB, consider a question:When creating objects, you need to request memory of a specified size on the heap. If there are a large number of threads requesting memory at the same time, you can ensure that the same block of memory will not b ...

The exception handling mechanism in Java is mature, and our Java programs are full of exceptions. If these exceptions are not handled in advance, there will be no debugging for future program crashes and it is difficult to find the location of exceptions.This article will discuss how exceptions and errors are handled in Java, so let's take a ...

Summary   HashMap is one of the most commonly used container classes in Java development and a frequent visitor to interviews.It's actually the preceding " Notes on Data Structure and Algorithms (2) The implementation of Hash List in JDK 1.8 uses the Chain List method to handle hash conflicts, and it is optimized to turn a chain list int ...

Simple differences between Java standard IO and Java NIO indicate:   Java Standard IO Java NIO API calls simple complex Low-level implementation Stream-oriented, one-way channel Oriented, Release CPU, Memory Pressure Results Synchronized blocking Synchronized non-blocking Data Peep Bloc ...

Kangaroo Mother Finds Children Time limit per test: 1.5 seconds Time limit all tests: 10.0 seconds Memory limit: 256 megabytes Mother Kangaroo can't find her baby. Her child was captured by the monster. The mother kangaroo is now in the upper left corner of the map, and her child is in line x and y of the map. The monster ...

In my first article, I introduced the major types of JS and used typeof for output viewing. I also mentioned that each function has its own internal attribute [[class]. This class refers to the internal classification of js. This class roughly includes two types: data type and constructor. Introduction to JavaScript Types We talked about sever ...

Writing this article stems from a previous interview and from various examples on the Internet that native sort s are faster than fast queues, because they have not written fast queues well. I was asked to write a quick line during the interview. I wrote a very concise piece of code that I read online (which I later found was in the JavaScript ...