Java ParameterMetaData .isNullable (int param)
Syntax
ParameterMetaData.isNullable(int param) has the following syntax.
int isNullable(int param) throws SQLException
Example
In the following code shows how to use ParameterMetaData.isNullable(int param) method.
/* w w w. j a va 2s. c om*/
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.Statement;
public class Main {
public static void main(String[] args) throws Exception {
Connection conn = getConnection();
Statement st = conn.createStatement();
st.executeUpdate("create table survey (id int,myDate DATE);");
String INSERT_RECORD = "insert into survey(id, myDate) values(?, ?)";
PreparedStatement pstmt = conn.prepareStatement(INSERT_RECORD);
pstmt.setString(1, "1");
java.sql.Date sqlDate = new java.sql.Date(new java.util.Date().getTime());
pstmt.setDate(2, sqlDate);
pstmt.executeUpdate();
System.out.println("The type of the first parameter is: "
+ pstmt.getParameterMetaData().getParameterTypeName(1));
System.out.println(pstmt.getParameterMetaData().isNullable(1));
conn.close();
}
private static Connection getConnection() throws Exception {
Class.forName("org.hsqldb.jdbcDriver");
String url = "jdbc:hsqldb:mem:data/tutorial";
return DriverManager.getConnection(url, "sa", "");
}
}