String sql="update stu set name="+"'"+stu.getname()+"'"+",sex="+"'"+stu.getsex()+"'"+",department="+"'"+stu.getdepartment()+"'"
+",address="+"'"+stu.getaddress()+"'"+",telephone="+"'"+stu.gettelephone()+"'"+",email="+"'"+stu.getemail()+"'" +",qq="
+"'"+stu.getqq()+"'"+",chinese="+"'"+stu.getchinese()+"'"+",math="+"'"+stu.getmath()+"'"+",english="+"'"+stu.getenglish()+"'"+"where schoolnum="+"'"+stu.getschoolnum()+"'";

报错　java.sql.SQLException: [Microsoft][ODBC Microsoft Access Driver] 语法错误 (操作符丢失) 在查询表达式 'sdg','sdg','sdg',22,22,22)' 中。
进行修改　　等都正常　　但插入时出错
请高手指正

非常抱歉 粘贴时出现了错误
应该是String sql="INSERT INTO stu (schoolnum,name,sex,department,address,telephone,email,qq,chinese,math,english) VALUES("+"\'"+stu.getschoolnum()
+"\'" +","+"\'"+stu.getname()+"\'"+","+"\'"+stu.getsex()+"\'"+","+"\'"+stu.getdepartment()+"\'"+","+"\'"+stu.getaddress()+"\'"+","+
stu.gettelephone()+"\'"+","+"\'"+stu.getemail()+"\'"+","+"\'"+stu.getqq()+"\'"+","+stu.getchinese()+","+stu.getmath()
+","+stu.getenglish()+")";

你说的1 2应该没错 应该是别的错误 但我实在找不出 希望指正

原程序里面没少
打印的结果为:
INSERT INTO stu (schoolnum,name,sex,department,address,telephone,email,qq,chinese,math,english) VALUES('44','4','m','4','4',4','4','44',22,22,22)