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Java application to insert null value into a MySQL database?
To set null value with Java, the statement is as follows −
ps.setNull(yourIndex, Types.NULL);
Let us first create a table −
mysql> create table DemoTable1893 ( FirstName varchar(20) ); Query OK, 0 rows affected (0.00 sec)
The Java code is as follows −
import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.Types; public class InsertNullValueIntoDatabase{ public static void main(String[] args){ Connection con=null; PreparedStatement ps=null; try{ con=DriverManager.getConnection("jdbc:mysql://localhost:3306/web?useSSL=false", "root","123456"); String query="insert into DemoTable1893(FirstName) values(?) "; ps= con.prepareStatement(query); ps.setNull(1, Types.NULL); ps.executeUpdate(); System.out.println("Check the DemoTable1893 "); } catch(Exception e){ e.printStackTrace(); } } }
This will produce the following output −
Check the MySQL table now using select statement −
mysql> select * from DemoTable1893;
This will produce the following output −
+-----------+ | FirstName | +-----------+ | NULL | +-----------+ 1 row in set (0.00 sec)
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