Recommended 10 jar package special effects (collection)

This article introduces how to use Android to operate Excel files. When operating Excel files in Android to export reports, the open source library jxl is mainly used. It was first used on java, but it can also be used on Android. Similar POI can only be used for Java, not Android, because it relies on many libraries. To use jxl, you need to import the jxl.jar package in the Android project. jxl can complete the basic reading and writing operations of Excel. Its support and non-support are as follows: 1. jxl only supports Excel2003 format and does not support Excel2007 format. That is, xls files are supported, but xlsx files are not supported. 2. jxl does not support direct modification of excel files, but it can be modified indirectly by copying a new file and overwriting the original file. 3. jxl can only recognize images in PNG format and cannot recognize images in other formats. As can be seen from the above, jxl does not support Excel2007, which is very bad, especially when Excel2007 has become the mainstream Excel format. But now there is an implementation of Android reading 2007 format

1. 10 recommended articles about exporting reports

Introduction: This article introduces how to use Android to operate Excel files. When operating Excel files in Android to export reports, the open source library jxl is mainly used. It was first used in java, but it can also be used in Android. . Similar POI can only be used for Java, not Android, because it relies on many libraries. To use jxl, you need to import the jxl.jar package in the Android project. jxl can complete the basic reading and writing operations of Excel. Its support and non-support are as follows: 1. jxl only supports Excel2...

2. Recommend 7 articles about specific code implementation

##Introduction: 1 , Get the connection 1) Copy the jar package to the project directory 2) Add the jar package to the project's buildpath environment variable to make the classpath consistent with the buildpath, so that the class loader can easily load specific subclasses 3) Reflectively load the driver class, The driver will be automatically registered 4) Obtain the connection through the driver manager.  3.

A brief discussion on the development of WeChat core architecture design

##Introduction: wechat4jWhat is wechat4j?wechat develop framework for java (WeChat development framework JAVA version, the simplest and easiest to use WeChat development framework) What can wechat4j be used for? Wechat4j is a jar package that helps you develop WeChat applications. Use it to develop WeChat public accounts. The application only takes a few seconds, and there is no need to pay attention to too much details. You can download the wechat4j sample project quickly, and then build on it...

##4. Recommended 6 articles about Wechat development framework

##Introduction: wechat4jWhat is wechat4j?wechat develop framework for java (WeChat development framework JAVA version, the simplest and easiest to use WeChat development framework) What can wechat4j be used for? Wechat4j is a jar package that helps you develop WeChat applications. Using it, you can develop WeChat public account applications in just a few seconds. time, you don’t need to pay attention to too much detail. Wechat4j can quickly start by downloading the wechat4j sample project, and then based on it...

5.

About file configuration Summary of related courses

Introduction: I have done several small projects using the SSM framework, and I feel pretty good It's time to summarize. Let's first summarize the file configuration of SSM integration. In fact, it is best to read the official documentation. Spring: http://spring.io/docs MyBatis: http://mybatis.github.io/mybatis-3/ I won’t go into the basic organizational structure and usage. The previous blogs and official documents are very comprehensive. Jar packages can be organized using Maven...

6.

7 recommended articles about Xstream

Introduction: This article mainly introduces the method of converting Javabeans to XML documents based on the xstream package, and analyzes the use of the xstream package based on specific examples. For specific tips on converting xml files, friends in need can refer to the following example. This article describes the method of Javabean converting XML documents based on the xstream package. Share it with everyone for your reference, the details are as follows: 1. Required Jar package: xpp3_min.jarxstream.jar download address of this website. Add these two jars to the project 2. Add two users...

7. java's special topic on JDBC

Introduction: JDBC (connection with Oracle) JDBC programming steps: ----Connection between java and Oracle data (in lomboz_eclipse environment) 1 . Find the JDBC folder in the Oracle database installation folder → lib folder → CLASSESL2.JAR (select different jar packages based on JRE) 2.lMboz_eclipse. #8.

Intellij IDEA Quickly Create Spring Web Project Steps (Figure)

Introduction: There are two ways to create a Spring project. The first is to use the function that comes with Idea to create a Spring project. The second is to add a jar package to create a Spring project yourself

##9. Detailed explanation and examples of using XML format and JSON format data in WeChat development in Java

Introduction : This article mainly introduces examples of using XML format and JSON format data in Java WeChat development. Pay attention to the jar package required by json-lib. Friends in need can refer to it

10. Detailed introduction to packaging java into jar and executing the main method specified in the jar package

Introduction: This article mainly introduces the relevant information on how to package java into an executable jar and execute the main method specified in the jar package. The article gives detailed sample code, which has certain reference value for everyone. It is needed Friends, let’s take a look together.

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