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java program to print values of oracle database table

Posted on 2012-08-23
Medium Priority
Last Modified: 2012-08-27
I am using following program to select and print values of oracle database table values into console. This simple program working fine and fetching and printing values in console. I have connection details like URL, username and password in a property file(xyz.properties in package abc)which is being referenced using a java constants file(say def.java). I wonder how to modify my java program to refer the database connection properties in a property file in different package.
import java.sql.*;
import java.util.Calendar;

public class Ri {
    public static void main(String[] args) throws SQLException {

        try {
        } catch ( Exception e ) {
            throw new SQLException("Oracle JDBC is not available",e);

        String url = "jdbc:oracle:thin:@xxxxxx83u:1543:COOLDEV";
        Connection conn = DriverManager.getConnection(url,"cooluser","coolpwd");

        String sql = "SELECT COL_1,COL_15 FROM cooltable where USER_KEY_10='kkkkk' and USER_KEY_1='6666666666'";
        PreparedStatement stmt = conn.prepareStatement(sql);

        ResultSet rs = stmt.executeQuery();
        while( rs.next() ) {
            System.out.println(rs.getString("USER_KEY_1")+" , "+rs.getString("USER_KEY_10"));
Any ideas, suggestions, sample code, links, source code highly appreciated. Thanks in advance
Question by:gudii9
  • 3
  • 2
LVL 86

Accepted Solution

CEHJ earned 1000 total points
ID: 38326799
Not 100% sure what you're asking for, but if your properties file is in package 'ghi' and is called 'db.properties' then you can load it with

Properties p = new Properties();
InputStream in = Ri.class.getResourceAsStream("/ghi/db.properties");

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LVL 21

Assisted Solution

by:Amitkumar P
Amitkumar P earned 1000 total points
ID: 38328522
Agree with CEHJ..  adding further..

After loading the properties from property file..... you can use the values as given in the below code.

String driver = p.getProperty("jdbc.driver");
if (driver != null) {
       Class.forName(driver) ;

String url = p.getProperty("jdbc.url");
String username = p.getProperty("jdbc.username");
String password = p.getProperty("jdbc.password");

Connection con = DriverManager.getConnection(url, username, password);

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LVL 21

Expert Comment

by:Amitkumar P
ID: 38328527
Property file should contain following text..


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LVL 21

Expert Comment

by:Amitkumar P
ID: 38328530
Property file, i mean "db.properties" as per the snippet provided by CEHJ.

Author Comment

ID: 38329417
proeprty file is under folder called config within same project. Do I need to include that into classpath. (right click on project---build path--etc). I am not able to get reference to property file(which has datasource connection details and sqls) as well as java constant file which connects those SQLs inside property files. Please advise
LVL 86

Expert Comment

ID: 38329431
Do I need to include that into classpath.
You shouldn't need to, since it should already be a folder under your package root

InputStream in = Ri.class.getResourceAsStream("/config/db.properties");

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