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Is javaweb front-end or back-end?

Javaweb is a direction in Java development. Java has Android direction, web direction, embedded direction, etc. Javaweb refers to the web direction. Javaweb is divided into two parts, one is the server side called the back end, and the other is called the front end, which is the web front end.

Jun 18, 2021 pm 02:26 PM

javaweb

Why are the features of springboot adapted to the microservice technology ecosystem?

For the sake of independence, springboot directly integrates web services into the framework. After the project is created, it can be started directly as a microservice. This method saves the deployment process. The development and deployment of the past model is not only troublesome...

Jun 01, 2021 pm 01:42 PM

springboot

What should I do if there is no servlet option when creating a new idea?

Solution: First enter the "Configuration" page and mark "src" as a "Sources" file; then click the "facets" tab on the left side of the page and check the option ending with "src" in "sources root". Create a new servlet file in the file in the src directory.

May 21, 2021 am 10:10 AM

idea

How to use coding standards and static code checking plug-ins

This article will introduce you to coding standards and how to use static code checking plug-ins. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to everyone.

May 06, 2021 am 09:59 AM

java plug-in

What is the difference between start method and run method in java thread

Threads in Java are implemented through Java.lang.Thread. You can create a thread by instantiating a Thread object and then calling start() to start it. However, a specific method run() of Thread can also start a thread. So what is the difference between these two methods?

May 01, 2021 pm 12:04 PM

java run start thread

Java batch inserts large amounts of data into mysql database

The fastest and most effective way for Java to batch insert large amounts of data into a MySQL database is to use traditional JDBC insertion.

May 01, 2021 pm 12:00 PM

java mysql data

What are the steps to connect to the database using jdbc?

The steps for jdbc to connect to the database: 1. Load the jdbc driver; 2. Create a connection to the database; 3. Create a preparedStatement; 4. Execute the SQL statement; 5. Traverse the result set; 6. Handle the exception and close the JDBC object resource.

Apr 23, 2021 pm 02:15 PM

jdbc database

What are the jvm garbage collection algorithms?

JVM garbage collection algorithm: 1. "Mark-Clear" algorithm; first mark all objects that need to be recycled, and then uniformly collect all marked objects after the marking is completed. 2. Copy algorithm; divide the memory into two equal-sized blocks, and only use one of them at a time. 3. "Mark-Organization" algorithm; 4. Generational collection algorithm.

Apr 22, 2021 pm 02:58 PM

jvm garbage collection algorithm

How to solve javac is not an internal or external command, nor is it an operable program?

Solution: 1. Download and install jdk; 2. In the environment variable interface, write the "JAVA_HOME" configuration path in full, write ".;%JAVA_HOME%\lib;" in the "CLASSPATH" configuration path, and "PATH" configuration Just write "%JAVA_HOME%\bin;" in the path.

Apr 16, 2021 pm 06:47 PM

java

How to run java program

Method: 1. Create a new java file containing program code in the desktop; 2. Open cmd and execute the "cd Desktop" command to enter the desktop; 3. Execute the "Java file name.java" command to compile; 4. Execute the "java file name" command to run the java program.

Apr 16, 2021 pm 06:40 PM

java

What are the commonly used data structures in Java?

Java data structures include: 1. Array; 2. Linked list, a recursive data structure; 3. Stack, which stores data according to the principles of "last in, first out" and "first in, last out"; 4. Queue; 5. Tree, It is a set of hierarchical relationships composed of n (n>0) limited nodes; 6. Heap; 7. Graph; 8. Hash table.

Apr 14, 2021 pm 04:52 PM

java data structure

What are the basic data types of java

There are 8 basic data types in Java, namely: byte (bit), short (short integer), int (integer), long (long integer), float (single precision), double (double precision), char (character) and boolean.

Apr 14, 2021 pm 02:36 PM

java type of data

How to understand java polymorphism

In Java, polymorphism is the ability of the same behavior to have multiple different manifestations or forms; polymorphism is the same interface, using different instances to perform different operations. The advantages of polymorphism: 1. Eliminate coupling relationships between types; 2. Replacement; 3. Extensibility; 4. Interface; 5. Flexibility; 6. Simplification.

Apr 13, 2021 pm 05:55 PM

What is reflection in java

In Java, reflection mainly refers to the ability of a program to access, detect, and modify its own state or behavior. The main functions of the Java reflection mechanism: 1. Determine the class to which any object belongs at runtime; 2. Construct an object of any class at runtime; 3. Call the method of any object at runtime, etc.

Apr 13, 2021 pm 05:34 PM

java reflection