JAVA Case Tutorial (1)

Tutorials//************************************ //A simple Java program //function is to demonstrate a small window with the ability to read and write files. //@author Gaogao //@date 2004-11-04 // ************************************ // ****

Implementation of database transaction processing in Java

Transaction Processing | data | Database Summary This paper introduces the method of transaction processing in Java, and explains how to implement the JDBC transaction, JTA (Java Transaction API) transaction supported by the JavaBean and EJB

Analysis of Java EE architecture

The Java EE architecture is one of the current mainstream architectures, and most enterprises adopt the structure design and solution of Java EE technology at present. The Java EE architecture provides a middle-tier integration framework to meet the

Common problems you may encounter in learning the Java language

This tutorial will discuss some of the common problems you might encounter in learning the Java language. Problem one: The compiler could not find the class. Workaround: Make sure you have imported the class or its package. If the CLASSPATH

Also said Java's double-parenthesis initialization: In fact, is the inexplicable irregular code

First look at the Cgaolei translation of the Java skills of the double bracket initialization of a text, a glance, only know usage, did not look at the explanation behind. Stunning, I think Java unexpectedly has such a magical grammar and has not

Java tool class for obtaining the first letter of Chinese phonetic Alphabet

Chinese character | pinyin public class Getch2spell {public static int Compare (string str1, String str2){int result = 0;String m_s1 = null;String m_s2 = null;Try{M_S1 = new String (Str1.getbytes (_fromencode_), _toencode_);M_s2 = new String (Str2.

Java exception Handling-try not to return from the try Section

Exception handling Java exception handling model in contrast to other languages, the keyword finally is the most outstanding new feature. The finally widget makes the code in the section always execute, regardless of whether an exception occurs,

Processing of characters in the Java language

Shanxi Province Network Management Center Ren June ----Summary: This paper mainly discusses the special expressions of characters in the Java language, especially the expression processing of Chinese information, and expounds that the key of

Possible optimizations for the Equals () method of Java String

Optimization The String Class code for JDK1.4 1.5 is as follows The following is the program code Public final class String Implements Java.io.Serializable, Comparable { /** The value is used

JAVA/J2EE the ultimate solution to Chinese problems

j2ee| Solution | problem | Chinese Java Chinese problem has been plagued by many beginners, if you understand the Java system in Chinese problem principle, we can take a fundamental solution to the Chinese problem. The oldest solution is to use

How to effectively prevent Java program source code being peeping?

Java Program source code is very easy for others to peek, as long as there is an inverse compiler, anyone can analyze the code of others. This article discusses how to protect source code by encrypting technology without modifying the original

Six questions that every Java beginner should understand

Beginners | questions For the problems in this series, everyone who learns Java should understand. Of course, it doesn't matter if you just learn to play Java. If you think you have gone beyond beginners, but do not understand these questions,

Javac,java usage in "package " && " make executable jar file "

Perform The first command that Java beginners can use is javac and Java, but even this simple command will make our scalp numb-__-. Roger follows a simple explanation for "Javac,java usage in package" and "Making executable jar files." The most

XML and Java: a powerful combination

XML XML is an acceptable specification when it was first presented by the WWW Group (W3C) in November 1996. Now, it is essentially a combination of Java--that is, translating XML-related code parts of Java programs and parts of Java Semantics

How to quickly become a Java master

A lot of netizens asked me to learn Java there is no shortcut, I said "without him, only hand-cooked Seoul." But I am very willing to learn some of their experience to write out, so that the latter less detours, to help others is the greatest

Java EE e-Government portal system

J2ee The government is the largest information owner and the largest information technology user in the whole society, the effective use of information technology, through the establishment of a truly effective and scalable e-government system, can

Diagnosing Java code: Designing Easy Code Maintenance

Design this month, Eric Allen explains how avoiding and controlling irrational changes is the key to keeping code robust while making code easier to maintain. He focused on concepts such as functional style code writing, and methods for labeling

Java Source Analysis: In-depth discussion of iterator mode

The Java.util package contains a series of important collection classes. This article will start with the analysis of the source, in-depth study of the internal structure of a collection class, as well as traversing the collection of iterative mode

Java and database connection methods (iii)

Data | databases | database connection finally gives the key code for Java to connect to other databases: 1, oracle8/8i/9i database (thin mode) Class.forName ("Oracle.jdbc.driver.OracleDriver"). newinstance (); String url= "Jdbc:oracle:thin:

How to use Java to test network connectivity

Overview In network programming, sometimes we need to judge the connectivity between two machines, or the network accessibility of a machine to another machine. In a system-level test, we often use the Ping command to do the validation. Although

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