java - Update table field value to null programmatically -

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It's well known how to clear field values, such as with a simple query - 

  Set your_ table your_column = NULL WHERE id = 1;   
 but pro-grammatically, which is the correct way to update field value for zero -  
  db.execSQL ("your_state update Your_column = '"+ blank +" WHERE id =' "+ myid +" '');   
 OR  
  db.execSQL ("your _table set your_column = NULL WHERE id = "+ myid +" '');   
 thanks   
 
 
 I will go together  
  string query = "set your_table your_column =? WHERE id =?"); Statement made stmnt = conn.prepareStatement (query); If (colyouAretryingtopass == faucet) {] stmnt.setNull (1, type .VARCHAR); }

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