Scannersc=newScanner(System.in);intselect=0;while(true){System.out.print("\n教师登陆\n");System.out.print("\n请输入用户名\n");teachertea=newteacher();tea.setC_TE_LoginName(sc.next());System.out.print("\n请输入密码\n");tea.setTE_PWD(sc