读取excel中的信号数据，并找出其中的极大值和极小值。-Read excel in the signal data, and find out where the maximum and minimum values.

java 读取数据库mysql千余条微博excel数据，并用swing界面显示结果，myeclipse java从mysql中读出数据,将读出的数据以表格显示至swing界面，界面清晰，适合初学者参考(Java read database mysql more than a thousand microblogging excel data, and use swing interface to display the results, myeclipse java read data from