CODEWITHSUNDEEP
java
user2065929
user2065929

Reputation: 1095

JAVA .properties file

having a lil issue, i have create a properties file :

config.properties located in ../resource/config.properties

this is the file currently :

destinationPDF=D:/Documents/NetBeansProjects/printing~subversion/fileupload/web/resources/pdf/
destination="D:/Documents/NetBeansProjects/printing~subversion/fileupload/Uploaded/
fileList =D:/Documents/NetBeansProjects/printing~subversion/fileupload/web/resources/Directory Files/directoryFiles.txt

have i done the properties file ok ?

also i want to access this file and load the variables into a class

i have tried 

public void loadProp() {
    try {
        prop.load(new FileInputStream("../resources/config.properties"));
        System.out.println(prop.getProperty("destinationPDF"));
        System.out.println(prop.getProperty("destination"));
        System.out.println(prop.getProperty("fileList"));

    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

but now the class will not compile becuase it can not find variable destination for example, so how do i load the variables from the file, and do i still need to declear the variable in the class ?

sorry if these are silly questions, first time using properties !

i do not get this error if i put in the variables normally like

private String destinationPDF = "D:/Documents/NetBeansProjects/printing~subversion/fileupload/web/resources/pdf/"; //USE ON TORNADO//"D:/My Documents/NetBeansProjects/printing~subversion/fileupload/web/resources/pdf/";//USE ON PREDATOR

EDIT:

have now 

private Properties configProp = new Properties();

public void loadProps() {
    InputStream in = this.getClass().getClassLoader().getResourceAsStream("../resources/config.properties");
    try {
        configProp.load(in);
    } catch (IOException e) {
        e.printStackTrace();
    }
}

EDIT 2:

public void loadProp() {
    InputStream in = this.getClass().getClassLoader().getResourceAsStream("../resources/config.properties");
    try {
        prop.load(in);
        System.out.println(prop.getProperty("destinationPDF"));
        System.out.println(prop.getProperty("destination"));
        System.out.println(prop.getProperty("fileList"));
    } catch (IOException e) {
        e.printStackTrace();
    }
}
Properties prop = new Properties();
private String destinationPDF = prop.getProperty("destinationPDF");
public String destination = prop.getProperty("destination");

it is working, no erors etc but destination and destinationPDF are passing null values

Upvotes: 1

Views: 5848

Answers (3)

JB Nizet
JB Nizet

Reputation: 691765

You seem to misunderstand what properties files are. They're just data. They don't contain Java code, and aren't used to declare variables. To get the value associated to the key destinationPDF in the properties file, you need to call

String destinationPDF = prop.getProperty("destinationPDF");

after having initialized the prop variable and loaded the file using prop.load(new FileInputStream(...)). And then you'll have a variable initialized with the value of the key.

Side note: please respect the Java naming conventions: variables start with a lower-case letter.

Upvotes: 3

Pradeep Simha
Pradeep Simha

Reputation: 18123

Problem is here:

        // destination = "D:/Documents/NetBeansProjects/printing~subversion/fileupload/Uploaded/";  // main location for uploads (CHANGE THIS WHEN USING PREDATOR)
        File theFile = new File(destination + "/" + username);
        theFile.mkdirs();// will create a sub folder for each user (currently does not work, below hopefully is a solution) (DOES NOW WORK)
        System.out.println("Completed Creation of folder");
        NewDestination = destination + username + "/";

You have commented the destination variable and you are using here:

NewDestination = destination + username + "/";

Upvotes: 1

Amit
Amit

Reputation: 817

I wonder whats the issue...I tested your code and it works fine...are you getting compilation error or runtime error?

import java.io.FileInputStream;
import java.io.IOException;
import java.util.Properties;


public class Test1 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        new Test1().loadProp();
    }

    Properties prop = new Properties();

    public void loadProp() {
        try {
            prop.load(new FileInputStream("c:/Test/Computer.txt"));
            System.out.println(prop.getProperty("destinationPDF"));
            System.out.println(prop.getProperty("destination"));
            System.out.println(prop.getProperty("fileList"));

        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }

}

Output:

D:/Documents/NetBeansProjects/printing~subversion/fileupload/web/resources/pdf/ D:/Documents/NetBeansProjects/printing~subversion/fileupload/Uploaded/ D:/Documents/NetBeansProjects/printing~subversion/fileupload/web/resources/Directory Files/directoryFiles.txt

Upvotes: 0

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