Example

Second accesses a public Main class with public attributes:

/* Code from filename: Main.java
public class Main {
  public String fname = "John";
  public String lname = "Doe";
  public String email = "";
  public int age = 24;
}
*/

class Second {
  public static void main(String[] args) {
    Main myObj = new Main();
    System.out.println("Name: " + myObj.fname + " " + myObj.lname);
    System.out.println("Email: " + myObj.email);
    System.out.println("Age: " + myObj.age);
  }
}