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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)
Updated on: 27-Dec-2019
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