HSQLDB

Question

hello i would ask you why the code below doesn't work (i recive an exception :
File input/output error: template.script in statement [SCRIPT 'template.script'] ):
Here is the code:
HSQLDBConnection.java
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;
public class HSQLDBConnection {
   Connection conn; 
   public HSQLDBConnection(String db_file_name_prefix,String user_name,String passwd) throws Exception {
        //nawiazanie polaczenia z baza danych, jak nie ma jeszcze takiej to jest tworzona
       Class.forName("org.hsqldb.jdbcDriver");
       conn = DriverManager.getConnection("jdbc:hsqldb:"+ db_file_name_prefix,user_name,passwd);
   public void shutdown() throws SQLException {
        //zamykanie polaczenia z baza danych
       Statement st = conn.createStatement();
       st.execute("SHUTDOWN");
       conn.close();
   //funkcji nalezy uzywac dla polecen typu SELECT
   public synchronized void query(String expression) throws SQLException {
       Statement st = null;
       ResultSet rs = null;
       st = conn.createStatement();         //wielokrotnego uzytku
       rs = st.executeQuery(expression);    //wykonaj polecenie
       dump(rs);
       st.close();
   //funcji nalezy uzywac do polecen typu CREATE, DROP, INSERT lub UPDATE
   public synchronized void update(String expression) throws SQLException {
       Statement st = null;
       st = conn.createStatement();              //wielokrotnego uzytku
       int i = st.executeUpdate(expression);//wykonaj polecenie
       if (i == -1) {
           System.out.println("db error : " + expression);
       st.close();
   public static void dump(ResultSet rs) throws SQLException {
       ResultSetMetaData meta   = rs.getMetaData();
       int               colmax = meta.getColumnCount();
       int               i;
       Object            o = null;
       for (; rs.next(); ) {
           for (i = 0; i < colmax; ++i) {
               o = rs.getObject(i + 1);
               System.out.print(o.toString() + " ");
           System.out.println(" ");
   public static void main(String[] args) {
/code]
DBTemplateMaker.javaimport java.io.*;
import java.sql.SQLException;
public class DBTemplateMaker {
     private BufferedReader input;
     private HSQLDBConnection db;
     DBTemplateMaker(String templateFileName,HSQLDBConnection db){
          this.db=db;
          try{
               db.query("SCRIPT '"+templateFileName+"");
          }catch(SQLException ext2){
               System.out.println("ect: "+ext2);
               ext2.printStackTrace();
     public static void main (String []args){
dbTester.java
import java.sql.Connection;
import java.sql.SQLException;
public class dbTester {
     private Connection conn;
     public dbTester(){
          HSQLDBConnection db = null;
          try {
               db = new HSQLDBConnection("db1_file","sa","");
          } catch (Exception ex1) {
               ex1.printStackTrace();    // could not start db
               return;                   // bye bye
          DBTemplateMaker dbtm=new DBTemplateMaker("./dbConnection/template.script",db);
     public static void main(String [] args){
          dbTester dbt=new dbTester();
}File template.script contains a lot of sql commands that makes some tables. I don;t know why it doesn't work . Probably i use SCRIPT command not as it should be used.
thanks for all replies

Answer 1

"File input/output error" suggests to me that there is an error reading from that file. Perhaps it doesn't exist. (You are using a relative path -- is the server's working directory what you think it is?) Or perhaps there is something wrong with the name.