包含标签：Java 的文章
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Java uses JDBC to operate database example sharing
package dao; import java. sql.*; public class BaseDao { //oracle // private static final String Dirver="oracle.jdbc.dr…… -
Example of MD5 encryption algorithm of Java irreversible encryption algorithm
The full name of MD5 is message digest algorithm 5. Message digest generally refers to the hash transformation of byte…… -
Java generates and parses instance code for XML format files and strings
1. Basics: there are generally four methods for parsing XML in Java: DOM, sax, JDOM and Dom4j. 2. Introduction to DOM …… -
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Java network programming identification example to obtain the host network interface list
Get host address information In Java, we use the InetAddress class to represent the target network address, including …… -
Example of finding text content replacement function in Java
Idea: First look at the view layer. There should be a JButton control to select the file, a jtextfield control to disp…… -
Method of reading spring configuration file (spring reads resource file)
1. Spring configuration file -
Conversion between Java and JSON objects
1. JSON lib is a Java class library, which provides the function of converting Java objects, including beans, maps, co…… -
Java uses POI to read ppt files and poi to read excel and word examples
Apache's POI project can be used to process MS office documents, and there is another one on codeplex Net version. POI…… -
Use example of JSON parsing class library of Java
Open source project home page: https://github.com/dongfangshangren/Zson -
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Java implements the tool class of importing data from excel
The tool class for importing Excel data calls only a few lines of code, which is very simple. -
Java button control array to realize calculator interface example sharing
The idea is as follows: Create a class and make it inherit the form class JFrame through extensions; Create a JFrame o…… -
What is the difference between a Java compile time library and a runtime library?
What is the use of professionals? I'm actually in NetBeans' Project Properties > java application library We have t…… -
Java EE – how to access URL parameter struts 2 in action class
I'm new to Java EE and struts 2 I need to know if I did something wrong I have a link like this: http://localhost:8080…… -
Java – xmleventwriter: how can I tell it to write empty elements?
I'm in javax xml. stream. Xmleventwriter or javax xml. stream. There is no option in xmloutputfactory. You can set a m…… -
Get the element name from XML in Java DOM
I want to get the element name and print the data in XML, but I don't know how to get the data under a specific elemen…… -
Java – remove duplicate code
I'm creating a small function programming library for Java (just to scratch my own itch) When defining high order func…… -
Java – how does eclipse terminate a running program?
In eclipse, when you run a program, there is a good red square button to prevent it I wonder how this is done Eclipse …… -
Why call the printing method of Java printable multiple times with the same page number?
From sun's documentation The printing system may require that the page be rendered multiple times before going to the …… -
What is “Java Web Start”?
I'm reading about the Java Web, starting with Wiki Someone can tell me >What is it used for? > Practical applica…… -
Java – how to serialize the last class that cannot be serialized by a third party (such as Google’s latlng class)?
I use Google's latlng class in V2 Google play service That particular class is final and does not implement Java io. S…… -
Java – hibernate saveorupdate() attempts to save when it should be updated
I have a hibernate entity named issueparticipant It basically describes the relationship between users and problems (s…… -
When inserting in a loop, javax persistence. TransactionRequiredException
I have an application using spring, hibernate and JTA We received a request that exceeded the expected data (10000 ele…… -
Aws sdk for java,dynamo db mapper async
In Amazon Web Services SDK for Java, it is possible to create two different clients for dynamodb: sync and async You c…… -
How to use java code to configure logback and set the log level?
I want to use the default slf4j logback configuration, except for org springframework. data. document. The logging lev…… -
Java – what is the minimum UNIX permission to run an executable jar file?
If I have a jar, I need to use Java - jar foo Jar runs on UNIX. Does this depend on the read, write, or execute bits? …… -
Concurrent use of Java util. Random contention
Oracle Java documentation says: Could it be the reason for poor performance? Solution Internally, Java util. Random ke…… -
Multithreading – common threadsafe properties
I created this "threadsafe" general property, which I can use between the main thread and the background thread I do t…… -
Java – parsing JSON using gson, objects sometimes contain lists and sometimes objects
I'm using an API that sometimes contains a list of child objects: { 'obj' : { children: [ {id: "1"},{id: "2"} ] } } I …… -
Java – what is the difference between extending abstract classes and non abstract classes?
What is the difference between abstract and non abstract classes when extending derived classes? Both classes do not u…… -
Java – how to serialize the last class that cannot be serialized by a third party (such as Google’s latlng class)?
I use Google's latlng class in V2 Google play service That particular class is final and does not implement Java io. S……