包含标签：Java 的文章
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Introduction to the differences between Java abstract classes and interfaces
The difference between abstract classes and interfaces abstract class A class containing abstract methods is an abstra…… -
Detailed explanation of the exchange example between JSON string and Java object in Java
During the development process, it is often necessary to exchange data with other systems. The formats of data exchang…… -
Summary of three types of array defined by Java
The three formats for defining arrays are as follows: Note: the length of the array is an attribute, and the length ()…… -
Java implements multithreading in two ways: inheriting the thread class and implementing the runnable interface
What is the difference between implementation and inheritance@ H_ 404_ 5@ *Difference: @ h_ 404_ 5@ *Inherit thread: t…… -
Implementation of 16 bit and 32-bit MD5 encryption of string under Java programming
As follows: @ h_ 404_ 3@ -
Method of querying data from database using JDBC
*Resultset result set: encapsulates the results of queries using JDBC * 1. The result set can be obtained by calling t…… -
Summary of several ways to create arrays in Java
1. Declaration method of one-dimensional array: type[] arrayName; Or type arrayname []; Note: the first format is reco…… -
Take MySQL as an example to explain the steps of JDBC database connection
1. What is JDBC? What does it do? Java Data Base Connectivity Is a Java API for executing SQL statements, which can pr…… -
On math. In Java Random () and Java util. The difference between random()
Today, I suddenly remembered that Java generates random numbers. I tried it on the computer and found a difference. I'…… -
Convert the first letter of a string to case in Java
Don't say much, just go to the code The above is all about using java to convert the initial letter of a string to cas…… -
Methods of creating and passing parameters of arrays in Java (learning summary)
（1） Array creation The creation of array includes two parts: the declaration of array and the allocation of memory s…… -
Conversion between byte array and int type in Java (two methods)
The conversion between byte array and int type in Java is the most basic algorithm in network programming. We all know…… -
Java syntax based operator learning notes sharing
1、 Operator Operators include the following: Arithmetic operator assignment operator comparison operator logical oper…… -
Stand alone version of bookstore management system of Java design module series (3)
introduce Today, a small bug of adding user input in series 2 was solved, adding user module, deleting user, and modif…… -
A simple method of exporting Excel files from Java Web
When doing system projects at ordinary times, you often need to do the export function, whether exporting Excel or exp…… -
Java EE online number management system
This blog is a summary of filter, listener and servlet technologies. It realizes the functions of simply displaying th…… -
Java POI common method for parsing Excel data conversion (recommended)
As follows: The above public method for data conversion of Java POI parsing excel (recommended) is all the content sha…… -
Mutual conversion between string and byte array in Java
preface When Java communicates with programs written in other languages through TCP / IP socket, the communication con…… -
Implementation of Java rounding and keeping decimal
//Mode 1: double f = 3.1516; BigDecimal b = new BigDecimal(f); double f1 = b.setScale(2,BigDecimal.ROUND_HALF_UP). dou…… -
Implementation method of conversion between Java byte array and int, long, short and byte
Examples are as follows: The above is all about the implementation methods of Java byte array and int, long, short and…… -
How much memory does a Java object occupy?
Recently, I read in-depth understanding of Java virtual machine and had a further understanding of the memory layout o…… -
8 common sorting of Java
6. Quick sort 8 sorting that programmers must know (Java implementation) Relationships among 8 sorts: 1. Direct insert…… -
Java JDBC connects to MySQL database to realize the operation of addition, deletion, modification and query
JDBC is no stranger to us. As long as you are engaged in Java, you have to learn such a thing when you first contact J…… -
Summary of Java idioms
In Java programming, some knowledge can not be learned only through language specifications or standard API documents.…… -
Common java development exceptions and explanations
Explanation of common Java exceptions: (translator's note: non-technical analysis. Reading is risky, understanding sho…… -
Java web development environment MyEclipse 6 5 JDK1. 6 Tomcat6. 0 SVN1. 8 configuration tutorial
The configuration of Java Web development environment is also a cumbersome thing. Although in theory, using Notepad ca…… -
Java implements code sharing to find the maximum palindrome string of the current string
Look at the code first 1、 Palindrome judgment of string Judge whether a string is palindrome Problem Description: giv…… -
Suggestions for developing and maintaining Java for large projects
Suppose you are developing and maintaining a java developer with 2000 classes and many frameworks. How do you understa…… -
10 classic javamain method interview questions
The following is what I think is a classic interview question about Java main method. It is not so much a Java intervi…… -
Summary of experience in dealing with character coding in Java
When facing a string of byte streams, its actual meaning cannot be known if its encoding is not specified. This senten…… -
40 common java development interview questions and answers
Java collection framework is the basis of Java programming language and an important knowledge point in Java interview…… -
MySQL download, installation, deployment and graphical detailed operation tutorial
MySQL is a tool that must learn how to install and deploy. It is different from other stupid applications / programs. ……