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About the intern method of String class in java Antecedents During the review, I thought I understood the meaning of the String intern method when I wrote the section of common classes in notes, which is to return the address of the String constant in the String constant pool! String s1 = new String("zs"); String s2 = s1.intern(); Syste ...

The full text is completed on the basis of IDEA compiler. This article is for java beginners who have not learned all kinds of Java frameworks Most java WebSockets on CSDN adopt the spring boot framework This article does not use any framework related to spring, but only uses maven to import the websocket library Reference source: https://g ...

preface Recently, when I read some articles about ConcurrentHashMap, I always said: before jdk8, ConcurrentHashMap used segment lock to ensure concurrency security. The jdk8 abandons the segmented lock and ensures the concurrency security through the sycronized keyword + CAS. Although it probably means so, it doesn't feel thorough enough, so I ...

preface As we all know, Java development is jokingly called spring development by the old oil subroutine apes, which shows the position of spring in Java development. If there is no spring framework, the code written by most people will be a shit. Spring MVC is a very important module among the seven modules of spring. MVC framework is a ful ...

catalogue 1 what is JUC? 1.1 introduction to JUC 1.2 concept of process and thread 1.3 thread status 1.3.1 thread status: 1.3.2 difference between wait and sleep 1.4 concurrency and parallelism 1.4.1 serial mode 1.4.2 parallel mode 1.4.3 concurrency 1.4.4 parallel 1.4.5 user thread and daemon thread 2 LOCK interface 2.1 synchroniz ...

1. Name Name the app: MyNotePad and my notebook. The app icon adopts the default icon. Just set the app name. The project has been placed in gitee: MyNotePad 2. Function description For Hongmeng application development API V6, it may not have rich text components. Read the relevant documents. Some functions of rich text components will n ...

Java operator Conditional operator (?:) variable x = (expression) ? value1 if true : value2 if false Simply put, if expression is true, the value of x is assigned value1, otherwise it is assigned value2 instanceof operator This operator is used to manipulate an object instance to check whether the object is a specific type (class type or i ...

Hello, everyone. I'm brother Qiang. I wonder if you have ever used java to process pictures in your work. After graduating from college, brother Qiang was engaged in server-side WEB development and rarely contacted image processing. Most of those who have contact with pictures are the uploading and downloading of pictures. Therefore, I have li ...

Generally, there are only two ways to create a Thread: one is to inherit the Thread, and the other is to implement the Runnable interface. However, these two creation methods have no return value, and you have to use shared variables or other communication methods to get the results processed by the Thread. It is generally not recommended to c ...

catalogue 1, Bracket matching problem 2, Implement a minimum stack 3, Implement queue with stack 4, Implement stack with queue 4.1} implement stack with two queues 4.2 implementing stack with a queue 5, Design cyclic queue 6, Next larger element 1, Bracket matching problem The title is described as follows: Solution idea: use th ...