Example: Use PreparedStatement to obtain a ResultSet

import java.sql.*;
import java.util.Properties;

public class PreparedStatementExample {

    public static void main(java.lang.String[] args) 
    {
        // Load the following from a properties object.
        String DRIVER = "com.ibm.db2.jdbc.app.DB2Driver";
        String URL    = "jdbc:db2://*local";

        // Register the native JDBC driver. If the driver cannot 
        // be registered, the test cannot continue.
        try {
            Class.forName(DRIVER);
        } catch (Exception e) {
            System.out.println("Driver failed to register.");
            System.out.println(e.getMessage());
            System.exit(1);
        }

        Connection c = null;
        Statement s = null;

        //    This program creates a table that is 
        //    used by prepared statements later.
        try {
            // Create the connection properties.
            Properties properties = new Properties ();
            properties.put ("user", "userid");
            properties.put ("password", "password");

            // Connect to the local iSeries database.
            c = DriverManager.getConnection(URL, properties);

            // Create a Statement object.
            s = c.createStatement();
            // Delete the test table if it exists.  Note that 
            // this example assumes throughout that the collection
            // MYLIBRARY exists on the system.
            try {
                s.executeUpdate("DROP TABLE MYLIBRARY.MYTABLE");
            } catch (SQLException e) {
                // Just continue... the table probably did not exist.  
            }

            // Run an SQL statement that creates a table in the database.
            s.executeUpdate("CREATE TABLE MYLIBRARY.MYTABLE (NAME VARCHAR(20), ID INTEGER)");

        } catch (SQLException sqle) {
            System.out.println("Database processing has failed.");
            System.out.println("Reason: " + sqle.getMessage());
        } finally {
            // Close database resources
            try {
                if (s != null) {
                    s.close();
                }
            } catch (SQLException e) {
                System.out.println("Cleanup failed to close Statement.");
            }
        }


        //    This program then uses a prepared statement to insert many 
        //    rows into the database.
        PreparedStatement ps = null;
        String[] nameArray = {"Rich", "Fred", "Mark", "Scott", "Jason", 
            "John", "Jessica", "Blair", "Erica", "Barb"};
        try {
            // Create a PreparedStatement object that is used to insert data into the 
            // table.
            ps = c.prepareStatement("INSERT INTO MYLIBRARY.MYTABLE (NAME, ID) VALUES (?, ?)");

            for (int i = 0; i < nameArray.length; i++) {
                ps.setString(1, nameArray[i]);      // Set the Name from our array.
                ps.setInt(2, i+1);                  // Set the ID.
                ps.executeUpdate();
            }

        } catch (SQLException sqle) {
            System.out.println("Database processing has failed.");
            System.out.println("Reason: " + sqle.getMessage());
        } finally {
            // Close database resources
            try {
                if (ps != null) {
                    ps.close();
                }
            } catch (SQLException e) {
                System.out.println("Cleanup failed to close Statement.");
            }
        }


        //    Use a prepared statement to query the database 
        //    table that has been created and return data from it. In
        //    this example, the parameter used is arbitrarily set to 
        //    5, meaning return all rows where the ID field is less than
        //    or equal to 5.
        try {
            ps = c.prepareStatement("SELECT * FROM MYLIBRARY.MYTABLE " + 
                                    "WHERE ID <= ?");

            ps.setInt(1, 5);

            // Run an SQL query on the table.
            ResultSet rs = ps.executeQuery();
            // Display all the data in the table.
            while (rs.next()) {
                System.out.println("Employee " + rs.getString(1) + " has ID " + rs.getInt(2));
            }

        } catch (SQLException sqle) {
            System.out.println("Database processing has failed.");
            System.out.println("Reason: " + sqle.getMessage());
        } finally {
            // Close database resources
            try {
                if (ps != null) {
                    ps.close();
                }
            } catch (SQLException e) {
                System.out.println("Cleanup failed to close Statement.");
            }

            try {
                if (c != null) {
                    c.close();
                }
            } catch (SQLException e) {
                System.out.println("Cleanup failed to close Connection.");
            }

        }
    }
}