java - Custom Object Arrays and For Loops -

i'm trying make program has array of person objects called "personarray" populated loop reads user input 3 separate variables , turns variables person object , adds array.

here code person.java:

public class person {     private string firstname, lastname;     private int zip;      public person(string fname, string lname, int perzip)     {         firstname = fname;         lastname = lname;         zip = perzip;     } } 

and here code persondriver.java:

import java.util.scanner;  public class persondriver {     public static void main(string[] args)     {         scanner scan = new scanner(system.in);         string firstname, lastname;         int zipcode;          person[] personarray = new person[25];          (int = 0; < 25; i++)         {                system.out.println("enter first name: ");             firstname = scan.nextline();              system.out.println("enter last name: ");             lastname = scan.nextline();              system.out.println("enter zip: ");             zipcode = scan.nextint();              personarray[i] = new person(firstname, lastname, zipcode);         }          scan.close();          system.out.println(personarray);     } } 

funny story: frustrating , common error came across when java newbie.

put scan.nextline() after zipcode. not save value. call method.

the reasoning behind when call nextint(), scanner's cursor moves position after integer, not next line if newline follows integer. when call nextline(), grabs characters between cursor , next newline character comes across, in case blank string. example, if have input such as:

alec
parsons
60120

the first iteration work fine, cursor stay on zip code's line, so:

alec
parsons
60120i

at next call nextline() firstname, instead receive blank string. eventually, program call nextint() on string value, throw exception.

it's not intuitive, that's how scanner works.

edit: also, pointed out in comments, every java object has string representation, putting array inside println() syntactically correct. however, string representation not readable. want loop through each person , print his/her information. 1 awesome thing java can define how class represented string overriding tostring() method. put method in person class:

public string tostring() {     // can define how person represented in string form here     return "name: " + firstname + " " + lastname + "\n" + "zip: " + zip; } 

this way, can use person argument println(), , java automatically print out information in desired format.

for(person p: personarray)     system.out.println(p); 

name: alec parsons
zip: 60120