java - MySQLSyntaxErrorException: Error in SQL Syntax -

please have @ following code

 public int insert(int index, string hashword)     {         string str="";         int result=0;         int returnresult=0;          try         {             con.setautocommit(false);             preparedstatement ps = con.preparestatement("insert key_word (key,hashed_word) values(?,?)");             ps.setint(1, index);             ps.setstring(2, hashword);              result = ps.executeupdate();             con.commit();              if(result>0)             {                 returnresult = 1;             }             else             {                 returnresult = -1;                 system.out.println( index+" failed update");             }           }         catch(sqlexception s)         {             returnresult = -1;             s.printstacktrace();             try {                 con.rollback();                 system.out.println(index+" exception occured. update failed");              } catch (sqlexception ex) {                 ex.printstacktrace();                 str = index+" exception occured. update failed. rollback failed";             }         }          return returnresult;     } 

when run code, gives below error.

com.mysql.jdbc.exceptions.jdbc4.mysqlsyntaxerrorexception: have error in sql syntax; check manual corresponds mysql server version right syntax use near 'key,hashed_word) values(0,'001')' @ line 1 0 exception occured. update failed     @ sun.reflect.nativeconstructoraccessorimpl.newinstance0(native method) operation broke completed     @ sun.reflect.nativeconstructoraccessorimpl.newinstance(nativeconstructoraccessorimpl.java:57)     @ sun.reflect.delegatingconstructoraccessorimpl.newinstance(delegatingconstructoraccessorimpl.java:45)     @ java.lang.reflect.constructor.newinstance(constructor.java:525)     @ com.mysql.jdbc.util.handlenewinstance(util.java:411)     @ com.mysql.jdbc.util.getinstance(util.java:386)     @ com.mysql.jdbc.sqlerror.createsqlexception(sqlerror.java:1054)     @ com.mysql.jdbc.mysqlio.checkerrorpacket(mysqlio.java:4237)     @ com.mysql.jdbc.mysqlio.checkerrorpacket(mysqlio.java:4169)     @ com.mysql.jdbc.mysqlio.sendcommand(mysqlio.java:2617)     @ com.mysql.jdbc.mysqlio.sqlquerydirect(mysqlio.java:2778)     @ com.mysql.jdbc.connectionimpl.execsql(connectionimpl.java:2834)     @ com.mysql.jdbc.preparedstatement.executeinternal(preparedstatement.java:2156)     @ com.mysql.jdbc.preparedstatement.executeupdate(preparedstatement.java:2441)     @ com.mysql.jdbc.preparedstatement.executeupdate(preparedstatement.java:2366)     @ com.mysql.jdbc.preparedstatement.executeupdate(preparedstatement.java:2350)     @ inglesrapido.databasehandler.insert(databasehandler.java:64)     @ inglesrapido.keywordtablecreator.readandupdate(keywordtablecreator.java:53)     @ inglesrapido.keywordtablecreator.<init>(keywordtablecreator.java:25)     @ inglesrapido.main.main(main.java:26) 

below mysql table

what wrong here?

key reserved word, needs escape used in queries, in:

insert key_word (`key`,hashed_word) values(?,?) 

it better choose column name, doesn't clash sql keyword.