Java

Download Installation JAva EE SDKVersion: Java platform,enterprise Edition 7 SDK (with JDK 7u45)Download page:Http://www.oracle.com/technetwork/java/javaee/downloads/java-ee-7-sdk-with-jdk-u45-2066865.htmlFile name:

This article mainly describes the Java generated CSV file method, the implementation steps are as follows:1. New Csvutils.java file:

Today May 3, 2016, Java study fourth day!P76 3.4 Construction Method The name of the construction method is consistent with the class name; The constructor method is not allowed to be declared by the return value type; (no return

Object copy is the copy of an object's properties to another object of the same class type. It is common to copy objects in a program, primarily to reuse some or all of the data in a new context. There are three types of object copies in Java:

Reprinted from: http://www.cnblogs.com/aisiteru/articles/1151874.htmlThe first time to read this article, is in the CSDN blog to see, the author of the original intention is still good, but there is a wrong place and not very clearWhite Place. So I

A socket is also called a socket, and an application typically makes a request to the network through a socket or answers a network request.In Java, the sockets and Servesocket class libraries are located in the java.net package. Seversocket is used

First, introduceThis article mainly records the use of thread breaks in the interrupt () method, and how to handle interruptedexception. It is a cautious and skillful job to handle interruptedexception anomalies.Due to the use of the Stop () method

Exception handlingThree kinds of exceptions: Check for exceptions: Checking for exceptions is usually a user error or a problem that cannot be foreseen by the programmer Run-time exception: a run-time exception is a type of exception

Why is the collection class present?Object-oriented language is the embodiment of things in the form of objects, so in order to facilitate the operation of multiple objects, the object is stored, the collection is the most common way to store

Given an array and a value, remove all instances of that value in place and return the new length.Do the allocate extra space for another array, and you must does this on place with constant memory.The order of elements can be changed. It doesn ' t

1 //Examples of immutable classes:2 /*3 The following program attempts to define an immutable class person class, but = because the person class contains a member variable of a reference type,4 and this reference class is a mutable class, so the

1, the Narrow JavaBean specification The JavaBean must contain a parameterless public construction method that makes it easy to produce objects in a reflective manner. The property must be private. JavaBean must contain the get and

20145306 "Java program design" The Nineth Week study summary textbook Learning content Summary The 16th Chapter One, Introduction to JDBC 1.JDBC JDBC is a solution for executing SQL, the developer uses the standard interface of JDBC, the database

write it in front.in the actual application of Java, because there is no system to read the book or study, so the foundation is weak, just this book is a relatively entry-level books, record some of the following basic concepts, to facilitate their

8 Basic data types for 1.Java and their space size: Boolean 8bit/1byte byte 8bit/1byte char 16bit/2byte short 16bit/2b     yte float 32bit/4byte int 32bit/4byte long 64bit/8byte double 64bit/8byte 2.Java automatic type conversion 1) The two types

Use the ReadValue and Writevalueasstring methods of the Jackson Objectmapper object to convert.For simple primitive types or for objects of type string, use the above method to satisfy.However, if you want to convert a complex type collection such

This article is mainly about the new date and time APIs in Java8. The new date and time classes were started by the Java developer Community awaited. The date class that existed before Java8 was always criticized, and many people would choose to use

One, Java data Type 1.1 data type division1.2 Basic data types1.2.1 Default values for basic data types1.3 commonly used escape characters1.4 Conversion of data types:(1) automatic type conversion and forced type conversion.(2) Any data type will be

1. OverviewA software design is good or bad, I think to a large extent, it depends on its overall structure, and this whole structure is your abstract framework of the entire macro-business business, when the high-level abstraction layer

Original: http://www.cnblogs.com/dolphin0520/p/3916526.htmlBefore entering Java NIO programming, let's discuss some basic knowledge: I/O models. The following first starts with the concept of synchronous and asynchronous, then explains the