In Codename One, why can I not get FileInputStream to import or compile?

Here are my imports:

import com.codename1.ui.*;
import com.codename1.ui.util.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.events.*;
import com.codename1.io.*;
import com.codename1.ui.layouts.*;
import java.io.*;

I cannot get this code to compile:

InputStream in = new FileInputStream("users.csv");

Here is the error:

C:\Users\Isaac\Documents\NetBeansProjects\CodenameOne_TESTING\src\com\fakecompany\testapp\MyApplication.java:119: error: cannot find symbol
    InputStream in = new FileInputStream("users.csv");
  symbol:   class FileInputStream
  location: class MyApplication

I thought this might be a problem with the imports, and sure enough, when I specifically imported java.io.FileImputStream it gave me an additional error:

C:\Users\Isaac\Documents\NetBeansProjects\CodenameOne_TESTING\src\com\fakecompany\testapp\MyApplication.java:13: error: cannot find symbol
import java.io.FileInputStream;
  symbol:   class FileInputStream
  location: package java.io

What is going on? Is there a different way I am supposed to import files in Codename One? Let me know if this is not enough of my code to find the error.

PS: I need to get an input stream implemented so I can parse the csv file:

    CSVParser parser = new CSVParser();
    String[][] data = parser.parse(in);