How to write a JAVA program to execute the SQL queries

Question

I have a database in the Microsoft Access queries and I need to execute the query by some how write the Java program to make it execute the query. because I need to get the different of time so I know how fast each query run.
Thank you

Answer 1

You need jdbc-driver for MSAccess for run this example:
JDBCClient.java
import java.util.Properties;
import java.lang.String;
import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.BufferedOutputStream;
import java.lang.System;
import java.lang.Class;
import java.sql.SQLException;
import java.util.Date;
import java.util.Locale;
import java.text.DateFormat;
import java.sql.Time;
public class JDBCClient{
    private String DriverName = new String();
    private String DatabaseURL = new String();
    private String UserName = new String();
    private String Password = new String();
    private String SQLFile = new String();
    private String OutputFile = new String();
    private String Separator = new String();
    private boolean NeedColumnHeaders;
    private String EncodingParamName = new String();
    private String EncodingValue = new String();
    private String OutputEncoding = new String();
    private boolean AfterLastColumnSeparator;
    JDBCClient( String propfilename){
     System.out.println( "Initializing...");
     Properties properties = new Properties();
     try{
         properties.load( new FileInputStream( propfilename));
     catch( Exception e){
             System.out.println( "Error: " + e.toString());
         System.exit( 0);
     DriverName = properties.getProperty( "DriverName");
     DatabaseURL = properties.getProperty( "DatabaseURL");
     UserName = properties.getProperty( "UserName");
     Password = properties.getProperty( "Password");
     SQLFile = properties.getProperty( "SQLFile");
     OutputFile = properties.getProperty( "OutputFile");
     Separator = properties.getProperty( "Separator");
     if( properties.getProperty( "NeedColumnHeaders").compareToIgnoreCase( "yes") == 0 ||
         properties.getProperty( "NeedColumnHeaders").compareToIgnoreCase( "true") == 0)
         NeedColumnHeaders = true;
     else
     if( properties.getProperty( "NeedColumnHeaders").compareToIgnoreCase( "no") == 0 ||
         properties.getProperty( "NeedColumnHeaders").compareToIgnoreCase( "false") == 0)
         NeedColumnHeaders = false;
     else{
             System.out.println( "Invalid value for \"NeedColumnHeaders\" property (logical expected)");
         System.exit( 0);
     EncodingParamName = properties.getProperty( "EncodingParamName");
     EncodingValue = properties.getProperty( "EncodingValue");
     OutputEncoding = properties.getProperty( "OutputEncoding");
     if( properties.getProperty( "AfterLastColumnSeparator").compareToIgnoreCase( "yes") == 0 ||
         properties.getProperty( "AfterLastColumnSeparator").compareToIgnoreCase( "true") == 0)
         AfterLastColumnSeparator = true;
     else
     if( properties.getProperty( "AfterLastColumnSeparator").compareToIgnoreCase( "no") == 0 ||
         properties.getProperty( "AfterLastColumnSeparator").compareToIgnoreCase( "false") == 0)
         AfterLastColumnSeparator = false;
     else{
             System.out.println( "Invalid value for \"AfterLastColumnSeparator\" property (logical expected)");
         System.exit( 0);
     try{
         byte[] EOL = new byte[2];
         EOL[0] = 13;
         EOL[1] = 10;
         Class.forName( DriverName);
         Properties connInfo = new Properties();
         connInfo.put( "user", UserName);
         connInfo.put( "password", Password);
         if( EncodingParamName.length() != 0 && EncodingValue.length() != 0)
          connInfo.put( EncodingParamName, EncodingValue);
             Connection connection = DriverManager.getConnection( DatabaseURL, connInfo);
         FileInputStream in = new FileInputStream( SQLFile);
         byte[] buffer = new byte[in.available()];
         in.read( buffer);
         in.close();
         String SQL = new String( buffer);
             PreparedStatement statement = connection.prepareStatement( SQL);
         Date d1 = new Date();
             System.out.println( "Database connected at " + d1 + " Executing statement...");
            ResultSet resultSet = null;
         if( statement.execute())
          resultSet = statement.getResultSet();
         else{
              System.out.println( "Script updates " + statement.getUpdateCount() + " records.");
          System.exit( 0);
             ResultSetMetaData metaData = resultSet.getMetaData();
             BufferedOutputStream out = new BufferedOutputStream( new FileOutputStream( OutputFile));
         if( NeedColumnHeaders && metaData.getColumnCount() > 0){
          String head = new String();
          for( int i = 1; i < metaData.getColumnCount(); i++)
              head += metaData.getColumnName( i) + Separator;
          head += metaData.getColumnName( metaData.getColumnCount());
          out.write( head.getBytes( OutputEncoding), 0, head.length());
          out.write( EOL, 0, 2);
         String record = new String();
         while( resultSet.next()){
          record = "";
          for( int i = 1; i < metaData.getColumnCount(); i++)
              record += resultSet.getString( i) + Separator;
          record += resultSet.getString( metaData.getColumnCount());
          if( AfterLastColumnSeparator)
              record += Separator;
          out.write( record.getBytes( OutputEncoding), 0, record.length());
          out.write( EOL, 0, 2);
         out.close();
         Date d2 = new Date();
             System.out.println( "Done at " + d2);
             System.out.println( "Executing time " + new Time( d2.getTime() - d1.getTime() - 10800000));
     catch( ClassNotFoundException e){
             System.out.println( e.toString());
     catch( SQLException e){
             System.out.println( e.toString());
     catch( java.io.IOException e){
             System.out.println( e.toString());
     System.exit( 0);
    public static void main( String args[]){
     if( args.length == 1)
         new JDBCClient( args[0]);
     else
         System.out.println( "Usage JDBCClient <properties_file>");
}JDBCClient.properties ( for Oracle database)
DriverName=oracle.jdbc.driver.OracleDriver
DatabaseURL=jdbc:oracle:thin:@192.168.1.1:1521:test
UserName=test
Password=test
SQLFile=test.sql
OutputFile=test.csv
Separator=*
NeedColumnHeaders=yes
EncodingParamName=
EncodingValue=
OutputEncoding=windows-1251
AfterLastColumnSeparator=yestest.sql
select * from users;