[learn Java notes from scratch] IO flow

You can pay attention to the author's account and the Java notebook from scratch. You can also go to the author's blog Garden to learn from the catalog. This film will be based on the black horse programmer job class video for learning and data sharing, and take notes and their own views. Welcome to study and discuss together. [learn Java note ...

Posted on Tue, 07 Apr 2020 11:36:49 -0400 by powerspike

java poi processes excel multiple sheet s and implements sorting

Requirement: there is a data dictionary full quantity summary table, in which the first sheet is the table of contents, including the number and table name, and the second sheet is the table details later. The sheet name is the table name, but it is unordered. The number of fields in the sheet is unordered and there are empty lines Now it is re ...

Posted on Sun, 05 Apr 2020 15:45:28 -0400 by mazazino

JNI learning notes (1)

1, Using tools NDK: Native Development kit CDT: C/C++ Development tools is essentially an eclipse Plug-in Cygwin: provides a unix simulation running environment in windows 2, NDK directory introduction docs development document recommendation D:/android-ndk-r9d/documentation.html build *.mk the configuration file ...

Posted on Wed, 01 Apr 2020 03:34:36 -0400 by vasse

Client error: unknown code for readObject at 0x32

Problem description Yes, this is the problem encountered in using the XXL distributed timed task framework. Most of the solutions given on the Internet for this kind of problem are about the wrong project address of the actuator configuration scheduling center. You need to modify the configuration xxl.job.admin.addresses. I don't use the distri ...

Posted on Mon, 30 Mar 2020 01:06:03 -0400 by Ekano

Which is better, activiti or jbpm

In the development of common ERP system and OA system, Workflow engine Is an essential tool. Before, there was a comparison between activiti and jbpm when selecting workflow engine. At that time, the decision was to use jbpm, but it was found that this choice was not appropriate in the actual development process. At present, we choose activiti ...

Posted on Tue, 17 Mar 2020 06:33:51 -0400 by bdichiara

Unable to run Eclipse; JVM terminated. Exit code = 13

I just append - vm C: \ \ Program Files \ Java \ jre6 \ bin \ javaw.exe In eclipse.ini, then I try to start eclipse again and receive this error. Give me how to solve or link to the actual solution to it. This is my eclipse.ini -startup plugins/org.eclipse.equinox.launcher_1.1.0.v20100507.jar --launcher.library plugins/org.eclipse ...

Posted on Fri, 13 Mar 2020 09:04:55 -0400 by Mohit_Prog

Learn java from scratch (18)

Day8 Continue to learn about classes and methods today 1. Storage and transfer of values of different data types Data type: Basic data types: only 8 Reference data type: except basic data type Difference: Different storage methods: basic data types store values, and reference data types store address ...

Posted on Wed, 19 Feb 2020 11:29:07 -0500 by simcoweb

Java Basic Syntax - Data Type Extensions and Operator Details

1. Preface In the previous section, we have explained some knowledge points about variables and keywords in the basic java programming grammar. This article will focus on the operators in the basic java programming grammar. Before explaining the grammar, let's talk about the real development environment. 2. Java Integrated Development Environm ...

Posted on Sun, 09 Feb 2020 12:26:16 -0500 by seularts

Android Hello World instance [TODO]

Table of Contents Android Hello World instance Create Android App Analysis of Android Applications Main activity documents Manifest file Strings file R file Layout file Running the application Android Hello World instance Let's start real Android framework based programming. Before you st ...

Posted on Sat, 08 Feb 2020 03:06:45 -0500 by leon77

JavaBean attribute naming specification (Boolean type)

(1) Specification 1. Try to use the normal hump naming rules for JavaBean attribute naming 2. Try to avoid using one letter for the first word of attribute name: for example, eBook and eMail.3. The Boolean property name should avo ...

Posted on Sun, 02 Feb 2020 13:30:54 -0500 by benjaminbeazy