Java

MyDate classpublic class mydate{private int year, month, day; private static int thisyear=2015; Public mydate (int year, int month, Int. day) {this.year=year; This.month=month; This.day = day; Public MyDate () {this (1970,1,1);//date

First on the codePackage com.ray.testobject;/** * Procedure for calling methods * * @author Ray * @since 2015-05-01 * */public class Person {public void say ( {System.out.println ("I am a Person");} public void Say (int.) {System.out.println ("I am"

A. lock can be used instead of the Synchronized keyword to implement mutex functionality. Here's how to use it:Lock L = ...; L.lock (); try { //access the resource protected by this lock } finally { l.unlock ();

Simple factory examples of design patterns: L Simple Factory mode Overview ? also called the Static Factory method pattern, which defines a specific factory class that is responsible for creating instances of some classes l Advantages ? clients do

/*** Book: Thinking in Java * Features: about closures and callbacks in Java, where callbacks differ from c++,c++ in the pointer * file: callbacks.java* time: April 3, 2015 20:26:43* Author: Cutter_point*/package lession10innerclasses;import Static

Add the following code to the MAVEN project's Pom.xml file:Add the following code to the :Plugins> plugin> groupId>Org.apache.maven.pluginsgroupId> Artifactid>Maven-compiler-pluginArtifactid>

"Learning Notes"1. The Java language is a purely object-oriented language, which is embodied in Java fully supports the three basic features of object-oriented: encapsulation, inheritance, polymorphism. Abstraction is also an important part of

The tools used in Java source learningJadDecompile. class filesand use (see the Readme in the compact package)http://varaneckas.com/jad/If you use Eclipse to match the Jadclipse plug-in

1. The difference between a member variable and a local variable (1) Different positions in the class Member variables: Outside Methods in class Local variables: in methods (2) different locations in memory Member

Learning content: An overview of regular expressions. The matching of regular expressions; cut; replace; getI. Overview of regular ExpressionsRegular expression: An expression that conforms to a certain rule. function: Used to specialize in

Summay:the Map Interface, Collection implementations-maps store and retrieve elements with key valuese.g:map datemap = new hashmap ();d atemap.put ("Today", New Date ());D ate today = Datema P.get ("Today");-functions:Public V put (K key, V

An array is a collection of data of the same type. It can be compared to a container, and when the data to be manipulated is much more, the period can be deposited into the array first. The advantage is that the data can be numbered. Easy to operate.

The previous blog introduced the basics of hibernate, and at the end of the blog we mentioned the caching mechanism of hibernate and the problem of lazy loading, and this blog we continue to add the content of these two parts.First of all, hibernate

Scenario RequirementsThe most recent parsing packet, because the protocol has changed, the original fixed length of the package, now becomes indefinite length. For example, the agreement stipulates that a package, there are 8 tags, but each up, not

In the process of reading any questions, welcome to communicate togetherEmail:[email protected]qq:1494713801Singleton mode is one of the simplest forms in design mode. The purpose of this pattern is to make an object of a Class A unique instance of

Java concurrency (1)-executorsThere are two common ways to create multithreading in Java, I will not say much, is to achieve runnable and inherit thread. So let's talk about other ways now.What is executors?Executors, which we call the executor,

Quick Sort (Quicksort) is an improvement to the bubbling sort. It is first found in the array of a key number, the first order will be smaller than the number of keys on its left, the key is larger than the number on its right. When the first trip

Start the WebLogic domain after the installation completes WebLogic, the results reported the start Startweblogic.cmd prompt: There should be no \java\jdk1.7.0_17\lib at this time, this errorAll kinds of Baidu after the cause of the error, that is,

These two days when doing the DRP project, encountered such a mistake:  " the type Java.lang.Object cannot  be resolved. It  is indirectly referencedfrom required. class Files ", A look is all English I head big, but fortunately, I am fortunate that

JAVA.LANG.REFLECT.INVOCATIONTARGETEXCEPTIONSUN.REFLECT.NATIVEMETHODACCESSORIMPL.INVOKE0 (Native Method) Sun.reflect.NativeMethodAccessorImpl.invoke (nativemethodaccessorimpl.java:39) Sun.reflect.DelegatingMethodAccessorImpl.invoke