Passing Object references?

Does anyone know how i could go about passing in a reference
to an object? I want to call the static method without creating an instance of this class, so when i call the FileGrabber method
i just have to use the class name. I not sure how i should go about doing this without having to define a constructor for this class. Any suggestions?

Code:

---

import java.io.*;
 
    public class FileGrabber{
   
    private static FileReader fr;
    private static String filepath;
 
  static void setFileReader(JTextField jtf){ want to pass in reference to a JTextField.
    try{ // path for file to be encrypted.

    filepath = jtf.getText();
    fr = new FileReader(filepath);
   
 
  }catch(IOException e ){System.err.println(e);}
  }
     
    }

---

Does anyone know how i could go about passing in a reference
to an object?
fr = new FileReader(filepath);
does this. "filepath" is an object reference (a reference to an object {of type String}).

I had to add
import javax.swing.*;
to your FileGrabber source code to use JTextField.

But I tested it with
import javax.swing.*;
public class Tester{
public static void main(String[] args){
T.setFileReader(new JTextField("hello.txt"));
System.out.println("The file is " + T.getFP());
}
}

You could replace
T.setFileReader(new JTextField("hello.txt"));
with
JTextField myJTF = new JTextField("hello.txt");
T.setFileReader(myJTF);

and in this case, myJTF is your reference to an object.

Oh, I also added
static String getFP(){
return filepath;
}
to your FileGrabber class.

What I'd like to know is why the execution of Tester.class doesn't terminate as coded.

Im sorry, i should have given another piece of the
code. But what im actually doing is passing an object
reference to the method like you pointed out.

JTextField jtf = new JTextField();
FileGrabber.setFileReader(jtf);

I think the problem was me not including import java.swing.*;
Im making a small encryption/decryption program just for the fun of it. It got me thinking about our lengthy discussion on histograms :p. The GUI is almost finished, it just has to be fine tuned alittle. Thanks.

import java.io.*;
import javax.swing.*;

public class FileGrabber{

private static FileReader fr;
private static String filepath;

static void setFileReader(JTextField jtf){
try{ // path for file to be encrypted.

filepath = jtf.getText();
fr = new FileReader(filepath);

}catch(IOException e ){System.err.println(e);}
}

}

And I wasn't exactly clear that I renamed your class to "T".