Java

Get to know the reflection first (this thing really made me understand it for a long time.) blog post reference (http://blog.csdn.net/cookieweb/article/details/7056277)Learn some basic concepts: runtime, compile, compile, interpret, class loader,

Introduction to NIOIn the previous period of time in the company to deal with some big data, and its word segmentation, extraction of keywords and so on. Although the task is basically completed (the effect is not particularly good), for Java has

basic flow conditions for IO streams:character stream: Character Stream buffer:FileReader BufferedReaderFileWriter BufferedWriter BYTE stream: Byte throttle buffer:FileInputStream BufferedinputstreamFileOutputStream Bufferedoutputstreamby typing a

In Java network programming, the byte array is important, it can transmit any material (text, audio, video, pictures, etc.), so it is important to master the mutual transformation of byte array and other data types. Example code:

Vamei Source: Http://www.cnblogs.com/vamei Welcome reprint, Please also keep this statement. Thank you!The most important function of a computer is to process data. A useful computer language needs to have good IO capabilities to let the unhandled

1, Selenium-java-2.45.0.jar2, Selenium-java-2.45.0-srcs.jar3, Selenium-server-standalone-2.45.0.jarDescriptionSelenium server refers to the use of the JDK to run this selenium-server-standalone-2.22.0.jar jar file (Java-jar/

Struts2 (4) property-driven and model-driven1. An overview of the so-called model-driven approach is to use a single JavaBean instance to run through the entire MVC process. In contrast to the property-driven approach, attributes are used as

Garbled characters appear when accessing Chinese via hibernateWhen hibernate is used for project development, garbled characters may occur when you modify and save Chinese characters. Many people use Baidu, and copy and paste the code behind the

Java-4.4 this In this chapter, we will discuss some of 1 this is used inside the class and points to the object reference.   package com.ray.ch01;public class Test {private Test getTest() {return this;}public static void main(String[] args) {}} In

Java-4.6 member Initialization In this section, we will discuss the initialization of members. As mentioned earlier, if it is an attribute field, the compiler will initialize it by default. This section will not be expanded. here we need to note the

Implementation Principles of the iterator in Java and java I. Introduction The term "iteration" is no stranger to those familiar with Java. We often use the iterative interface provided by JDK to traverse java collections: Iterator it =

Introduction to Java constant pool parsing and string intern When a Java application is running, the Java Virtual Machine will save an internal runtime constant pool, which is different from the constant pool of the class file and is the data

Java record-45-List's toString MethodWhen using a set, it is customary to traverse every element in a loop. If you want to know the information of each element in the Set, do you have to traverse each element cyclically? For example, when printing

Play Framework installation and configuration, playframework Configuration   Installation environment: Jdk 1.7; play 1.3.1; eclipse   Installation Guide-http://play-framework.herokuapp.com/zh/install   Before installing the Play Framework, you must

Java record-40-Best way to define ConstantsIn actual work development, constants are often used. Common constants, such as: public static final int AGE_OF_PERSON = 18; naming rules for constants: All words are in uppercase. If there are multiple

Java record-32-value exchange1. Implement the exchange of two variable values: public static void main(String[] args) { int a = 3; int b = 5; int temp = a; a = b; b = temp; System.out.println(a);

Java record-34-Arrays class ParsingJava. util class Arrayspublic class Arrays extends Object contains various methods used to operate Arrays (such as sorting and searching. This class also contains a static factory that allows you to view arrays as

Java record-33-address for storing objects in Arrays1. The object address is stored in the array. public class ArrayTest3 { public static void main(String[] args) { I[] i = new I[2]; i[0] = new C(); i[1] = new C();

File Download implementation Java code:   @ RequestMapping (value =/download) @ ResponseBodypublic void download (HttpServletRequest request, HttpServletResponse response) throws FileNotFoundException {// obtain the server-side file storage path

Understand the basic principles of ClassLoader and the basic principles of classloader When JVM (JavaVirtual Machine) at startup, an initial class loader hierarchy consisting of three class loaders will be formed: Bootstrap classloader|Extension