How to convert a String to Date?

i have a String "1998-12-31" i would like to convert it to Date so that i can compare the Date in Mysql.
i am appreciate for your help.
Thanks
yuetni Swee

hi,
i try to change the code by using the code below do you think it is ok
i just use the Date.valueOf(String s) method. is it still working in sql?
          java.sql.Date PickDat = java.sql.Date.valueOf(PDate);
          java.sql.Date DropDat = java.sql.Date.valueOf(DDate);
          System.out.println("IN CARINFO FUNC." + pickdropPnt + PDate + DDate + carclass);
               sql.append("SELECT * FROM CARS");
               sql.append("WHERE TO_DAYS('" PickDat "') BETWEEN TO_DAYS('FROM_D') AND TO_DAYS('UNTIL_D') ");
               sql.append("AND TO_DAYS('" DropDat "') BETWEEN TO_DAYS('"+PickDat+"') AND TO_DAYS('UNTIL_D') ");
               sql.append("AND PICK_UP_DROP ='" + pickdropPnt +"' ");
               sql.append("AND CAR_TYPE ='"+carclass + "'");

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>
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