用java实现GUI界面的计算器程序，用户可以通过鼠标依次输入参加计算的数值，进行加、减、乘、除混合运算。里面包含课程设计文档及源代码。-GUI interface to achieve with java calculator program, users can turn the mouse input to participate in the value calculation, add, subtract, multiply and divide mixed operation. Which contains the program design documents and source code.