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java reading csv file and inserting into database gives date value error.

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I am using a java program to read lines from csv and insert them into mysql database. Whenever i run my program i discovered i could not insert values into a date field insert mysql if the value comming from the file is null. However if i change the field to a varchar, it works fine. I want to maintain the field as a date field. Below is the snippet of my code.



    
     queryString = "INSERT INTO account (MNE,DATE1,DATE2,LINK) values('"+data[0]+"','"+data[1]+"','"+data[2]+"','"+data[3]+"')";
      stmt=conn.createStatement();
       val = stmt.executeUpdate(queryString);

and below is the line to be written 
TEE,29-11-12,,90681
BBB,29-11-12,,90681
CCC,29-11-12,,90681

below is the error message (i think it comes because the value for DATE2 is null).


    712 [pool-1-thread-1] ERROR main.ProcessInboxFileTask  - Failed to upload: C:\Users\Teejay\Documents\NetBeansProjects\NetBeans 6.9.1\TEEJAYD\all\GTUS.csv
    com.mysql.jdbc.MysqlDataTruncation: Data truncation: Incorrect date value: '' for column 'DATE2' at row 1
            at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3591)
            at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3525)
            at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1986)
            at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2140)

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java reading csv file and inserting into database gives date value error. twonjee2002@gmail.com - 2013-03-21 01:26 -0700
  Re: java reading csv file and inserting into database gives date value error. Roedy Green <see_website@mindprod.com.invalid> - 2013-03-21 14:10 -0700
  Re: java reading csv file and inserting into database gives date value error. Lew <lewbloch@gmail.com> - 2013-03-21 14:17 -0700

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