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Review the past and learn the new (1) In-depth understanding of strings in Java

The java basic tutorial column will introduce to you: an in-depth understanding of strings in Java.

Sep 18, 2020 pm 05:32 PM

java string

These days, if you say you know Java, you have to know polymorphism.

The java basic tutorial column will introduce you to polymorphism in Java.

Sep 15, 2020 pm 04:46 PM

java Polymorphism

In java do you know what String does to '+'

The java basic tutorial column introduces the relationship between String and "+".

Sep 14, 2020 pm 01:51 PM

java string

How many bytes does java char occupy?

In java, char takes up 2 bytes. In Java, as long as it is a character, whether it is a number, English or Chinese character, it takes up two bytes. Reason: Java compiler uses Unicode encoding by default, so 2 bytes can represent all characters.

Aug 22, 2020 pm 02:52 PM

char java byte

Detailed instructions for using Flyway

This article mainly introduces the brief introduction and use of Flyway. This article introduces you to it in great detail and has certain reference value for your study or work. Friends who need it can refer to it.

Jul 28, 2020 pm 06:31 PM

springboot+quartz implements scheduled tasks in a persistent manner

This article mainly introduces the relevant knowledge of springboot+quartz to implement scheduled tasks in a persistent manner. This article introduces it to you in great detail through example code. It has certain reference value for everyone's study or work. Friends who need it can refer to it. Down

Jul 27, 2020 pm 06:33 PM

springboot

Eclipse adds servlet template process code

This article mainly introduces the detailed code of the process of adding servlet templates in Eclipse. The article introduces it in great detail through sample code. It has certain reference learning value for everyone's study or work. Friends who need it can refer to it.

Jul 27, 2020 pm 06:26 PM

eclipse Add to

What is the difference between Struts2 and SpringMVC?

The differences between Struts2 and SpringMVC: 1. The development efficiency and performance of SpringMVC are higher than Struts2; 2. The amount of configuration files of Struts2 is larger than that of SpringMVC; 3. Struts2 is more in line with OOP programming ideas; 4. SpringMVC integrates Ajax.

Jul 27, 2020 pm 04:29 PM

java

Java implementation of address book management system tutorial

This article mainly introduces the implementation of address book management system in Java in detail. The sample code in the article is introduced in great detail and has certain reference value. Interested friends can refer to it.

Jul 24, 2020 pm 05:37 PM

Detailed explanation of Spring Boot hot deployment Devtools

This article mainly introduces the analysis of the Spring boot hot deployment devtools process. The article introduces it in detail through sample code. It has certain reference learning value for everyone's study or work. Friends in need can refer to it.

Jul 24, 2020 pm 05:19 PM

boot devtools spring Hot deployment

Usage of Random class in Java

The Random class in Java is mainly used to generate random numbers. It is usually combined with some other methods to generate the required random numbers. The methods of this class include "nextBoolean" to produce uniformly distributed boolean values, "nextDouble" to generate random Double, etc. .

Jul 24, 2020 pm 04:21 PM

java

What are the states of java threads?

There are five states of java threads: 1. Initial state. 2. Runnable state, located in the runnable thread pool, waiting to be selected by thread scheduling to obtain the right to use the CPU. 3. Running status. 4. Blocked state means that the thread has given up the right to use the CPU for some reason. 5. In the death state, the dead thread cannot be resurrected.

Jul 24, 2020 am 11:37 AM

java Thread status

JVM-Getting Started Chapter 1

1. Basic concepts JVM is the abbreviation of Java Virtual Machine. JVM is a specification for computing devices. It is a fictitious computer that simulates various computer functions on an actual computer. realized. 2. java -help command parameters ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

Jul 24, 2020 am 11:10 AM

How does Javaweb use getPart to receive form files?

This article mainly introduces the analysis of the process of using getPart to receive form files in Javaweb. The article introduces it in great detail through sample code. It has certain reference learning value for everyone's study or work. Friends who need it can refer to it.

Jul 22, 2020 pm 05:45 PM

javaweb take over