ListView multiple items and checkBox select all delete operation

1. Multiple entries Design sketch: The main difference is in the custom MyAdapter.java. private final int TYPE_1 = 0; private final int TYPE_2 = 1; //Specify the layout type you want to implement @Override public int getItemViewType(int position) { if(position % 2 == 0) { ret ...

Posted on Tue, 31 Mar 2020 04:06:30 -0400 by zako234

The application task of JAVA basic calculation method (1)

The application tasks of JAVA basic calculation methods are as follows: A. Programming 1 + 2 + 3 + +100 The source code is as follows: class Task1//Define a class { //Main function public static void main(String[] args) { int i=1; int sum=0; while(i<=100) //w ...

Posted on Tue, 31 Mar 2020 03:05:53 -0400 by google_man2000

spring traditional xml configuration okhttp3

problem The back-end service needs to use http client to request other service support. In the project, HttpClient needs to be replaced with okhttp. Why should okhttp be replaced? The advantages and disadvantages between the two are not discussed here. This article focuses on integrating okhttp with Spring's traditional xml configu ...

Posted on Tue, 31 Mar 2020 02:35:31 -0400 by Joseph Witchard

Android Development: SmartImageView simple implementation and Application

Usually, the image obtained from the server is the URL address. If you simply obtain the image through the URL address? There is an open source project: SmartImageView, which achieves this function, but also has other functions. It is inconvenient to download and too large Here I realize this simple function of it   Code: package org.dreamtech ...

Posted on Tue, 31 Mar 2020 02:21:04 -0400 by r.smitherton

Java object oriented inheritance extensions entry instance

1, Basic concepts (1) advantages of inheritance: 1. Inheritance: improves code reusability. 2. The relationship between classes is generated, which provides the premise for polymorphism. (2) types of inheritance: 1. Single inheritance: a class can only have one parent class. 2. Multiple inheritance: a class can have multiple parents. 3.java sup ...

Posted on Tue, 31 Mar 2020 02:09:16 -0400 by ShaunO

In-depth analysis of Chinese code scrambling in maven compile by idea under windows

There are a lot of articles on the Internet saying solutions, but they don't analyze the reasons. The solution is idea settings Add - Dfile.encoding=GBK or GB2312 to VM Options, so the garbled code will be the correct Chinese character, BUT!!!, why? Cause analysis -How does idea interact with maven C:\Java\jdk1.8.0_162\bin\java.exe -Dmaven.mult ...

Posted on Mon, 30 Mar 2020 23:59:19 -0400 by diesel

Return value of controller method in Spring MVC

Original Link: http://www.yiidian.com/springmvc/return-value.html The controller method return value of Spring MVC can support multiple writings, each of which has a different scene and effect.Here's a look at the use of each return value. Normal String Forward String Restring void ModelAndView Java Objects 1 Normal string Returning normal st ...

Posted on Mon, 30 Mar 2020 21:15:39 -0400 by lunac

Merge multiple PDF files - Java/Android

Recently, the company has a new demand to synthesize multiple PDFs into a pdf display locally, and has read many articles on the Internet that are not comprehensive or need to be integrated. Therefore, many methods are compared and decided to use the following methods, which can be used for pro testing, with fast mergin ...

Posted on Mon, 30 Mar 2020 18:09:07 -0400 by roseplant

[maven] maven Plugin Development Actual

Preface As we all know, Maven is essentially a plug-in execution framework, and all work is done through plug-ins.Include similar install s, clean, deploy, compiler s that we use every day.The bottom level of these commands is actually a maven plug-in. How to develop your own plug-ins 1. Naming specifications for Maven plug-ins Before you wr ...

Posted on Mon, 30 Mar 2020 16:53:09 -0400 by sriphp

Introduction and installation of Zookeeper (2)

1, Introduction: Zookeeper is a distributed coordination service, which provides the following services: Naming service: similar to DNS, but only for nodes Configuration management: management of service configuration information Cluster management: Dubbo uses Zookeeper to achieve service governance Distributed lock: select a leader so that onl ...

Posted on Mon, 30 Mar 2020 16:14:22 -0400 by dinku33