调用java类打印的列子，程序首先搜索默认打印机，如果没有就报错，这里就是打印文件自身。- Transfers a java kind of printing Liezi, the procedure first searches tacitly approves the printer, if has not been wrong on the newspaper, here prints document oneself.

一个用于安排项目时间表的Java程序,并可打印出时间报表等()