Java

without permission, no reprint 1, JDK download and configuration 1.1 downloadssudo wget http://download.oracle.com/otn-pub/java/jdk/8u45-b14/jdk-8u45-linux-x64.tar.gz? Authparam=1432864690_d8334d64fa2a7f2048c38f7dd3180fe01.2

The reflection mechanism is one of the dynamics of Java, and when it comes to dynamic, we need to understand dynamic language. So what is dynamic language?First, dynamic languageDynamic language means that a program can change its structure at run

Reprint: http://blog.csdn.net/zhangjg_blog/article/details/16102131from the Java dynamics to the class loading mechanism We know that Java is a dynamic language. So how do you understand this "dynamic"? Or what is the nature of a language that can

I. Comparator comparable and comparatorThe previous blog introduced the tool class arrays tool class . We can call the Arrays.sort () function on an array of basic types to sort the array. Sorting operations are often used in daily development. Then

The cache is required for the project, and after comparison, Redis is selected, the client uses Jedis connections, and the Spring-data-redis is provided by spring. After the configuration is correct, start Tomcat and find the following exception:====

Recently made a technical blog site, organized a study of the Java process to do examples and small projects, are placed on the site to provide download, there are examples of beginners, there are Java Web examples, as well as my university during

The mission of the Apache POI project is to create and maintain the Java API to manipulate various file formats based on Office Open XML Standard (OOXML) and Microsoft's OLE Composite Document Format (OLE2) 2. In short, you can read and write Excel

What we often do is divide the Java memory area into two simple types: heap memory and Stack memory. This division is more coarse grained, and this division is focused on the two types of memory domains that we are most concerned about, which are

Formatting consists of the following: Basic usage Money format; Scientific counting method; Percent counting method; Embed text; package com.sssppp.NumberFormat; import java.text.DecimalFormat;

Java Collection Framework one. Collection interfaceIn the collection framework, the collection (Collection) interface is located at the top of the set interface and the list interface, and is the parent interface of the set interface and the list

Content Overview:In the actual project, sometimes you need to store some files, such as storing some pictures, data files, and so on, to consider where to store these files.There are usually two ways to get the file storage path:Method One, obtain

1.JAVA Introduction1.1java Architecture: J2SE,JAVAWEB,J2EE1.2java Features: Platform independent (virtual machine), garbage collection (makes Java more stable)1.3 JDK and Jre,jdk:java development environment, Jre:java operating environment1.4 First

Spring/spring boot/spring cloud Development Summary, springcloud Background Dubbo and dubbox are used for remote RPC calls. As the community suspends maintenance and responds to future development, we are ready to try new technologies (maybe not a

JAVA environment variable and TomCat server configuration, tomcat server configuration The Tomcat server is a free open-source Web application server, which is a lightweight application server. It is widely used in small and medium systems and

Jvm running data distribution and jvm Data Distribution I have a deep understanding of jvm (java se7 of this version) Data Area During java Runtime   When executing a java program, the java Virtual Machine divides the memory into several different

Java thread pool (1), java Thread PoolWhy use a thread pool? 1. reduce resource consumption. Reuse created threads to reduce the consumption caused by thread creation and destruction. Second, increase the response speed. When a task arrives, the

In java EE learning, the simple use and introduction of PreparedStatement (small record in java learning) and preparedstatement Simple use and introduction of PreparedStatement in java Learning (small record in java learning)Author:

Spring jdbcTemplate transaction, a variety of strange, package you just fill it !, Top filling Preface The project framework is mainly spring. The persistence layer framework does not use mybtis, and spring jdbc is used; Business Requirements: add

Use split and split Java. lang. string. splitSplit MethodSplits a string into substrings and returns the result as a string array.StringObj. split ([separator, [limit])StringObjRequired. The String object or text to be decomposed. The object is not

Vs tool for eclipse Quick Start, vseclipse Quick Start Download eclipse Tool First of all, this article applies to students who have just started to learn java. I have to say that vs is indeed very powerful. It is often integrated in the