你写的代码stat.executeUpdate到数据库里面的语句是“insert into practice values(........),(........)”
这个sql语句在数据库中根本无法执行
你要执行多条语句,分别执行每一条
String sql3 = "insert into practice values(。。。。。。。。。。)";
String sql4 = "insert into practice values(。。。。。。。。。。)";
stat.executeUpdate(sql3);
stat.executeUpdate(sql4);
或者下面那位同学的也行
String sql3 = "insert into practice values('lihua', 'male', 20)";
stat.executeUpdate(sql3);
sql3 = "insert into practice values('limei', 'female', 19)";
stat.executeUpdate(sql3);
String sql3 = "insert into practice values('lihua', 'male', 20)";
stat.executeUpdate(sql3);
sql3 = "insert into practice values('limei', 'female', 19)";
stat.executeUpdate(sql3);