projiect (1)

说明：  一只青蛙一次可以跳上1级台阶，也可以跳上2级。求该青蛙跳上一个n级的台阶总共有多少种跳法。要求：分别用普通方法和递归方法实现(A frog can jump up a step or two at a time. Find out how many jumping methods the frog can use to jump up an n-step. Requirements: Implemented by common method and recursive method respectively)

用java编的简单的计算器，虽然简单却实用。具有图形化界面(Java made using a simple calculator, although simple but practical. With a graphical interface)

一个简单的右键菜单，能美化你的程序，简单 又实用(A simple menu, you can beautify the procedure simple and practical)

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.)

this is a file which permit to understand the informatio system very well

清华大学 郑莉 java程序设计基础 课程实验 第五章(Zheng Li, Tsinghua University basic course java programming chapter Experiment)

这篇文章教你如何成为一位java高手，要想成为java高手的请多看看。(This article teaches you how to become a the java master, in order to become the java master of like him look at.)

说明：  java 打地鼠小游戏 课程设计 经过测定 非常好用(the code for java game)

一种蓝牙定位的java程序，功能完善，实现质心定位，三边定位和最小二乘算法，通过布置蓝牙的位置，定位精度在0.5M左右(A bluetooth positioning Java program, the function is perfect, realize the centroid localization, trilateral positioning and least squares algorithm, through the arrangement of the position of the bluetooth, positioning accuracy at about 0.5 M)

java飞行棋代码，仅供学习，环境不同，请自行修改错误(Java flying chess code, for learning only)