Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;

public class Main {
    public static void main(String[] args) throws Exception {
        Connection conn = getConnection();
        Statement st = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_READ_ONLY);

        st.executeUpdate("create table survey (id int,name varchar(30));");
        st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");
        st.executeUpdate("insert into survey (id,name ) values (2,null)");
        st.executeUpdate("insert into survey (id,name ) values (3,'Tom')");
        ResultSet rs = st.executeQuery("SELECT * FROM survey");

        // Move cursor forward
        while (rs.next()) {
            // Get data at cursor
            String id = rs.getString(1);
            String name = rs.getString(2);
        }

        // Move cursor backward
        while (rs.previous()) {
            // Get data at cursor
            String id = rs.getString(1);
            String name = rs.getString(2);
        }

        // Move cursor to the first row
        rs.first();

        // Move cursor to the last row
        rs.last();

        // Move cursor to the end, after the last row
        rs.afterLast();

        // Move cursor to the beginning, before the first row.
        // cursor position is 0.
        rs.beforeFirst();

        // Move cursor to the second row
        rs.absolute(2);

        // Move cursor to the last row
        rs.absolute(-1);

        // Move cursor to the second-to-last row
        rs.absolute(-2);

        // Move cursor down 5 rows from the current row. If this moves
        // cursor beyond the last row, cursor is put after the last row
        rs.relative(5);

        // Move cursor up 3 rows from the current row. If this moves
        // cursor beyond the first row, cursor is put before the first row
        rs.relative(-3);

        rs.close();
        st.close();
        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", "");
    }
}