Build Your own Java-based supercomputer

If you've ever thought about building your own supercomputer, but it's daunting for parallel programming in C, then pseudo-remote threads can help you solve the problem. This award-winning Java programming model greatly simplifies parallel

How to implement long-time tasks in Java

Absrtact: In software development, we often face the problem of multithreading programming with long time tasks. In our Ezone platform development in many places involved, such as JPC Data Services JPC processing Services Alarm linkage access

Java API Interface Chapter (II)

Write your own type of comparable The comparable interface is composed of a single method: public interface Comparable { public int compareTo(Object o); } The CompareTo method compares the receiving object with a specific object and returns a

Java Theory and Practice: balancing Test, part 3rd: Using aspects to test design constraints

Aspect-oriented programming (AOP) is a promising new technology, but the adoption of new technologies can be risky (and, of course, there is a risk of not adopting new technologies). As with all new technologies, it is usually best to follow a path

Java Theory and Practice: Repairing the Java memory model, part 2nd

A JSR 133, which has been active for nearly three years, recently released a public recommendation on how to fix the Java memory model (Java Memory models, JMM). In the 1th installment of this series, Brian Goetz, a columnist, describes several

Deep understanding of Java nested classes and inner classes

First, what is nested class and internal class? You can define another class within a class, called a nested class (nested classes), which has two types: Static nested classes and non-static nested classes. Static nested classes use few, most

Solution to the Java acquisition time error after updating XP

Yesterday XP automatic Update, prompt, I inadvertently saw an update is about the time zone update, then did not control what, because WinXP Automatic Updates will not bring any harm to the computer, who knows, after a period of time, just my

Practical Java language Multithread Programming essentials of Implementation thread

The Java programming language makes multithreading so simple and effective that some programmers say it's actually natural. Although the use of line turndown in Java is much easier in other languages, there are still some concepts that need to be

Java Web Services

The early Apache Axis was built on the first WEB service-oriented Java standard JAX-RPC Foundation. This is not a good approach, as it turns out, because Jax-RPC restricts the internal design of the Axis code and creates performance problems and

Introduction to the Java language Tutorial (vi): Static modifiers in the Java language

In Java classes, we often see static keywords, which are often referred to as statics. The static modifier can be used to decorate a data member, a method member, but not a class (this refers to an external class) and cannot modify a construction

Getting started in the Java language Tutorial (v): Constructing methods in the Java language

The basic concepts of Java classes, packages in the Java language, permission access modifiers, and data types have been learned from the previous 4 articles. Java is an object-oriented language, and the runtime is the process by which several

Diagnosing Java code: assertions and temporal logic in Java programming

Although traditional assertions can increase the number of checks performed on Java code, there are many checks that cannot be performed with them. The remedy for this flaw is to use "temporal logic", a formal system that describes how the state of

Working principle and application of Java rule Engine

Introduction At present, the Java community has promoted and developed a compelling new technology--java rules engine (rule Engine). It can be used to separate the business decision logic of business decision-makers and the technology decision of

Java Programmer interview Questions

Talk about final, finally, finalize the difference final-modifier (keyword) If a class is declared final, it means that it cannot derive a new subclass and cannot be inherited as a parent class. Thus a class cannot be declared as abstract and

Audit of database operations for front-end users in Java EE applications

db2

Introduction In some systems with high requirements for security audits, administrators need to see what database operations are performed by the logged-on user of each application, and usually when our application accesses the database, the

Comparison and selection of Java Enterprise Application System framework

The current popular Java Enterprise Application System framework is diverse, in order to enable developers to choose the system architecture to improve the development efficiency of Java Enterprise Application, first of all, based on EJB and the

Quartz Scheduling in Java is an entry-level application of some timed tasks (job)

Quartz implementation: http://quartz-scheduler.org/to download the corresponding jar package in Maven, you can copy the dependent copy directly to the POM. Specific rules can be queried for quartz documents The following is a very detailed example:

Java IO Learning (14) DataOutputStream's knowledge, source code, and example

DataOutputStream (data output stream) 's cognition, source code and example This chapter describes DataOutputStream. We first have a general understanding of DataOutputStream, and then in-depth study of its source code, and finally through the

Effects of Java Object.clone ()

When the calls Object.clone (), what actually happens? What is the key to Super.clone () when we cover clone () in our own class? The Clone () method in the root class is responsible for establishing the correct storage capacity and copying the

Java Programming Rules

This appendix contains a number of useful suggestions to help you with low-level programming and provides general guidance for code writing: (1) The first letter of the class name should be capitalized. The first letter of the field, method, and

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