java兑现mysql 数据库备份

java实现mysql 数据库备份
//db数据库
//ip 备份数据库地址
//user用户名 password 密码
public void back(String db,String ip,String user,String password)
{
String stmt1 = "mysqldump.exe " + db+" -h "+ ip + " -u" + user + " -p" +  password + " --default-character-set=utf8 --result-file=" + ww.sql; 
Runtime.getRuntime().exec(stmt1);
}