Error reading property file in java

I do not know is correct and it works, but I made a division in the project. a project would access DAO and have the connection and an properties file with the connection information. Another has a main class in which I have not created frames yet, just a main class for testing. In the libraries I added the projects as reference and I did the test but it is giving an error where it can not read the properties file, could you tell me what it can be?

Error Description:

jul 27, 2016 9:30:41 AM Conection.GenericConnection getDbProperties
GRAVE: null
java.io.FileNotFoundException: src\properties\conf.properties (O sistema não pode encontrar o caminho especificado)
    at java.io.FileInputStream.open0(Native Method)
    at java.io.FileInputStream.open(FileInputStream.java:195)
    at java.io.FileInputStream.<init>(FileInputStream.java:138)
    at java.io.FileInputStream.<init>(FileInputStream.java:93)
    at Conection.GenericConnection.getDbProperties(GenericConnection.java:25)
    at Conection.OracleConnection.getConnection(OracleConnection.java:35)
    at Views.mainTeste.main(mainTeste.java:16)

Exception in thread "main" java.lang.NullPointerException
    at Conection.OracleConnection.getConnection(OracleConnection.java:35)
    at Views.mainTeste.main(mainTeste.java:16)
D:\SICF_Project\SICFCadastros\nbproject\build-impl.xml:1063: The following error occurred while executing this line:
D:\SICF_Project\SICFCadastros\nbproject\build-impl.xml:804: Java returned: 1
FALHA NA CONSTRUÇÃO (tempo total: 0 segundos)

Mother Class GenericConnection

package Conection;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.sql.Connection;
import java.sql.Statement;
import java.util.Properties;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author Ulisses Gimenes
 */
public abstract class GenericConnection {

    protected Properties dbProperties;
    protected Connection conn;
    protected Statement st;

    public Properties getDbProperties() {
        if (dbProperties == null) {
            try {
                dbProperties.load(new FileInputStream("src/properties/conf.properties"));
            } catch (FileNotFoundException ex) {
                Logger.getLogger(GenericConnection.class.getName()).log(Level.SEVERE, null, ex);
            } catch (IOException ex) {
                Logger.getLogger(GenericConnection.class.getName()).log(Level.SEVERE, null, ex);
            }
        }
        return dbProperties;
    }

    public void setDbProperties(Properties dbProperties) {
        this.dbProperties = dbProperties;
    }

    public Connection getConn() {
        return conn;
    }

    public void setConn(Connection conn) {
        this.conn = conn;
    }

    public Statement getSt() {
        return st;
    }

    public void setSt(Statement st) {
        this.st = st;
    }

    public abstract Connection getConnection();
}

Connection class for oracle

package Conection;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author UlissesGimenes
 */
public class OracleConnection extends GenericConnection {  

    private static OracleConnection connOra;

    public static OracleConnection getConnOra() {
        if(connOra == null){
            connOra = new OracleConnection();
        }
        return connOra;
    }

    public static void setConnOra(OracleConnection connOra) {
        OracleConnection.connOra = connOra;
    }    

    @Override
    public Connection getConnection() {
        if (getConn() != null) {
            return getConn();
        } else {
            try {
                String url = "jdbc:oracle:thin:@" + 
                        super.getDbProperties().getProperty("ServerOracle") + 
                        ":" + super.getDbProperties().getProperty("portOracle") + 
                        ":" + super.getDbProperties().getProperty("sidOracle");
                setConn(DriverManager.getConnection(
                        url, 
                        super.getDbProperties().getProperty("userOracle"), 
                        super.getDbProperties().getProperty("passwdOracle")));
                setSt(getConn().createStatement());
                System.out.println("conectado");
                return getConn();
            } catch (SQLException ex) {
                Logger.getLogger(OracleConnection.class.getName()).log(Level.SEVERE, null, ex);
                return null;
            }
        }
    }

}

Test main class

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package Views;

import Conection.OracleConnection;

/**
 *
 * @author UlissesGimenes
 */
public class mainTeste {
    public static void main(String[] args) {
        OracleConnection.getConnOra().getConnection();
    }
}

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