Mega Code Archive
Use PreparedStatement Twice
<![CDATA[
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Statement;
public class Main {
public static void main(String[] args) throws Exception {
Connection conn = getHSQLConnection();
System.out.println("Got Connection.");
Statement st = conn.createStatement();
st.executeUpdate("create table survey (id int,name varchar);");
st.executeUpdate("create view surveyView as (select * from survey);");
st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");
st.executeUpdate("insert into survey (id,name ) values (2,'anotherValue')");
ResultSet rs = null;
PreparedStatement ps = null;
String query = "select id, name from survey where id = ?";
ps = conn.prepareStatement(query);
// specify values for all input parameters
ps.setInt(1, 001); // set the first parameter: id
// now, PreparedStatement object is ready to be executed.
rs = ps.executeQuery();
// iterate the result set object
while (rs.next()) {
int id = rs.getInt(1);
String name = rs.getString(2);
System.out.println("[id=" + id + "][name=" + name + "]");
}
// NOTE: you may use PreparedStatement as many times as you want
// here we use it for another set of parameters:
ps.setInt(1, 002); // set the first parameter: id
// now, PreparedStatement object is ready to be executed.
rs = ps.executeQuery();
// iterate the result set object
while (rs.next()) {
int id = rs.getInt(1);
String name = rs.getString(2);
System.out.println("[id=" + id + "][name=" + name + "]");
}
rs.close();
ps.close();
conn.close();
}
private static Connection getHSQLConnection() throws Exception {
Class.forName("org.hsqldb.jdbcDriver");
System.out.println("Driver Loaded.");
String url = "jdbc:hsqldb:data/tutorial";
return DriverManager.getConnection(url, "sa", "");
}
public static Connection getMySqlConnection() throws Exception {
String driver = "org.gjt.mm.mysql.Driver";
String url = "jdbc:mysql://localhost/demo2s";
String username = "oost";
String password = "oost";
Class.forName(driver);
Connection conn = DriverManager.getConnection(url, username, password);
return conn;
}
public static Connection getOracleConnection() throws Exception {
String driver = "oracle.jdbc.driver.OracleDriver";
String url = "jdbc:oracle:thin:@localhost:1521:caspian";
String username = "mp";
String password = "mp2";
Class.forName(driver); // load Oracle driver
Connection conn = DriverManager.getConnection(url, username, password);
return conn;
}
}
UsePreparedStatementTwice.zip( 3,848 k)
]]>