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2, Garbage recycling How to judge whether an object can be recycled Garbage collection algorithm Generational waste recycling Garbage collector Garbage collection tuning 1. How to judge whether an object can be recycled 1.1 reference counting method Disadvantages: 1.2 reachability analysis algorithm The garbage collector in Java v ...

Interface Overview Interface is a reference type in the Java language and a "collection" of methods. Therefore, the interior of the interface is mainly to define methods, including constants, abstract methods (JDK 7 and before), default methods and static methods (JDK 8), and private methods (jdk9). There can be no other members in t ...

2, Encapsulation (Part 2) 4.1 object arrays and object members (1) Object array Many times, we need not only one object, but a group of objects. For example, if there are 50 students in a class, we can use the object array. [object array code practice] Title: define a Coordinate class whose data members contain abscissa and ordinate. In ...

Filter sensitive words using prefix tree Introduction to prefix tree Prefix tree is also called word lookup tree, Trie tree , is a kind of tree structure , is a variant of hash tree. The typical application is to count, sort and save a large number of data character String (but not limited to string), so it is often used by search e ...

reference http://c.biancheng.net/view/6984.html Syntax and rules of auto type derivation In previous versions of C + +, the auto keyword was used to indicate the storage type of variables, which is opposite to the static keyword. Auto means that variables are stored automatically, which is also the default rule of the compiler, so it is the ...

catalogue Program translation environment and execution environment Compilation and linking Pretreatment Program translation environment and execution environment In any implementation of ANSI C, there are two different environments. Translation environment and execution environment. Translation environment: in this environment, the ...

Catalogue Introduction to dynamic memory function Common mistakes Flexible array Introduction to dynamic memory function malloc: apply for a continuous space like memory void* malloc(size_t size); If the development is successful, return a pointer to the developed space. If the development fails, a NULL is returned The return t ...

concept Polymorphism, that is, multiple forms, that is, different objects will produce different states when they complete a certain behavior. For example, when buying tickets in the past, ordinary people bought tickets normally, students bought tickets at half price, and soldiers bought tickets first. Definition and Implementation Com ...

Description: Night Fury is a very rare and most dangerous and intelligent dragon from "master of dragon training 2". It is very different from other dragons in shape. It is similar to bats. At the same time, it combines the size of cats and the sharp eyes of wild wolves, with black scales on its body. The volume is petite, the expres ...

Learning objectives Through the analysis of source code level, understand the direct relationship between the three loaders and the understanding of parental delegation mechanism​ Introduction to class loader The design team of Java virtual machine intentionally put the binary byte stream describing a class obtained through the full class ...