采用JAVA语言讲解JDBC-ODBC连接的两种方式，用以实现JAVA与SQL的连接-JAVA language to explain two ways JDBC-ODBC connection to JAVA and SQL connection

编写一个程序。在窗口四角绘制4个50×50的蓝色矩形，在窗口正中绘制1个100×50的色椭圆形。4个矩形之间用橙色粗实线连接。-To write a program. 4 5050 blue rectangle is drawn in the window corners, and a 10,050-color oval drawn to the middle of the window. With four rectangular the orange thick solid line con

一个用Java+C实现串口连接的程序示例-An example of a program of serial port connection using Java+C