I. Overview of IO streamsThe 1.IO stream is used to transfer data between devices.The operation of the data in 2.Java is carried out in a stream manner.3. Classification:1) data by operation: Byte Stream (There are early, can transmit any data) and
In Java thread topic, the task is executed and the thread to drive the task is a concepts should b E clarified. The working process is like the following:
Create One task
Create one thread to is attached on your created task.
In Java,
/*** Dynamically generate a proxy class object and bind the proxy class and the proxy processor** @param Business* @return Proxy class object*/public object bind (object business) {this.business = business;Return Proxy.newproxyinstance (ClassLoader
Packagecom.example;ImportJava.util.Random; Public classApp { Public Static classMyRunnable1ImplementsRunnable {//threadlocal is a thread local variable PrivateThreadlocalthreadlocal=NewThreadlocal(); @Override Public voidrun () {//threadlocal
The main construction method is to create an instantiated object of the class, but the initialization of the instantiated object is done. Declaration format:Constructor method's modifier list class name (method parameter list)Construction methods
Design patterns are reusable solutions that have been proposed by 4 authors, called "GoF", also known as quad groups.The design pattern is divided into: creation type, structure type, behavior typeThe singleton design pattern belongs to the creation
Experimental content1. Master the socket program writing;2. Mastering the use of cryptographic technology;3. Design Safety4. Summary calculation and verification of the communication contentExperimental steps1. Secure Transmission of information:
First, how to install the JDK?When we down the J2SE 5.0 jdk from the network (is an executable file, the filename is called jdk-1_5_0- Windows-i586.exe, of course, this name will be different from the corresponding operating system, I use the
Recently took over the new project, the project a run, Nosuchmethoderror jumped out, finally solved, for a computer, Nosuchmethoderror again jumped out, simply, summed up the nosuchmethoderror should be how to deal with the idea.With the following
ImportJava.io.BufferedInputStream;ImportJava.io.File;Importjava.io.IOException;ImportJava.io.InputStream;ImportJava.io.StringBufferInputStream; Public classInputStream1 {//InputStream byte input stream//Reader character input stream Public
= = Usage1. Compare basic data types, if two values are the same, the result is true2. When comparing references, if the reference points to the same object in memory, the result is trueEquals () UsageFunction prototype: public boolean equals
Fine-grained locks: Several locks in Java: Synchronized,reentrantlock,reentrantreadwritelock has basically been able to meet programming needs, but its granularity is too large, at the same time only one thread can enter the synchronization block,
Java-hill sorting
Hill sorting is also called grouping insertion sorting and narrowing down incremental sorting.
It works by comparing elements with a certain interval. The distance used for comparison decreases with the algorithm until only the
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