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Java类库中字节流由InputStream类和OutputStream类派生。由于InputStream,OutputStream是针对字节流的,所以读取文件前先要定义byte[]，然后把文件流读取到byte[]里面.(Derived the InputStream class and OutputStream class byte stream in the Java class library. Thanks to InputStream, OutputStream is aimed at the byte stream, so must be defined before reading byte[] file, then the file stream to read into byte[].)

用JAVA写的带通滤波代码，实现思路很简单，没有采用各种数字滤波的方法。而是通过傅里叶变换到频域，将要求外的频率均置0，再逆傅里叶变换得到的。效果还不错。(Written using JAVA bandpass filtering code to achieve the idea is very simple, without using a variety of digital filtering approach. But through the Fourier transform to the frequency domain, the frequency requirements are set to 0, then the inverse Fourier transform. Results were pretty good.)

java访问sql server数据库的jdbc驱动，很重要哦(java database sql server access jdbc driver, it is very important, oh)

创建一个类，提供与java .lang.Math同名的所有方法，但每个方法均按度数而非弧度进行运算。具体要求是:在自己编写的类中，对Math类中的每一个方法加一层包装。(Create a class that provides all methods with the same name as java. lang. Math, but each method operates in degrees rather than radians. Specific requirements are: in their own class, each method in the Math class with a layer of packaging.)

很简单的java socket例子 需要用到mysql数据库

说明：  ibatis 的jpetstore对初学者很有帮助值得收藏(ibatis helpful for beginners jpetstore the collection is worth)

java课程设计实例里边包含了多个简单易懂的例子，希望对初学者有帮助！(java program inside contains a number of design examples easy to understand example, I hope to help beginners!)

①阅读Java API文档，掌握借助API编程的方法。 ②掌握String类的常用方法 ③掌握Date类以及Calendar类的常用方法； (① read the Java API documentation, to master the method with API programming. ② master the String class to grasp the common method ③ Date and Calendar classes class common method )

java swing学生信息管理系统(源码+数据库+文档)

Java P2P 技术内幕，电子书，pdf格式(Insider Java P2P technology, e-books, pdf format)