searching an array....example with this problem

[vuthlarhi donald]

 
import java.util.Scanner;
/**
 * Details of a Person.
 * @version 1.00 10 Jan 2008
 * @author valoyi
 *
 */
 
 public class Person {
   private String name;
   private String surname;
   private String address;
   private String username;
   private String email;
   private int password;
        
/**
         * default contractor that initializes all Strings to null
         * and Integers to zero.
         */
        public Person(){
        }
/**
         * A contractor to initialize all the parameters.
         * @param name
         * @param surname
         * @param address
         * @param username
         * @param email
         * @param password
         */
public Person(String name,String surname,String address,String username,
                String email,int password){
this.name = name;
this.surname = surname;
this.address = address;
this.username = username;
this.email = email;
this.password = password;
}
/**
         * get the name.
         * @return name.
         */
public String getName(){
return name;
}
/**
         * get the name.
         * @param name
         */
public void setName(String name){
this.name = name;
}
/**
         * get the surname.
         * @return surname.
         */
public String getSurname(){
return surname;
}
/**
         * set the surname.
         * @param surname
         */
public void  setSurname(String surname){
this.surname = surname;
}
        /**
         * get the address.
         * @return address.
         */

public String getAddress(){
           return address;
}
/**
         * set address.
         * @param address
         */
public void setAddress(String address){
            this.address = address;
}
/**
         * get the username.
         * @return username
         */
public String getUsername(){
    return username;
}
/**
         * 
         * @param username
         */
public void setUsername(String username){
   this.username=username;
}
/**
         * get the email.
         * @return email
         */
public String getEmail(){
return email;
}
/**
         * set email.
         * @param email
         */
public void setEmail(String email){
this.email = email;
}
/**
         * get the password.
         * @return password
         */
public int getPassword(){
return password;
}
/**
         * set pasword.
         * @param password
         */
public void setPassword(int password){
    this.password = password;
}

        /**
         * Overrides the toString method.
         * @return all the instances
         */
    @Override
public String toString(){
return   "Name=" + getName() + "Surname="+ getSurname() 
                       + "Address=" + getAddress()+ "Username="+ getUsername()
                       + "email="+ getEmail() + "password="+getPassword();
}

/**
         * main method
 * @param args
 */
   public static void main(String[] args) {
            
// Create ten instances of the  person class.
       Person[] persons = new Person[10];
persons[0] = new Person("Donald","Funy","Sandton","valoyivd","hello",100);
persons[1] = new Person("Funny","Va","valoyivd","valoyi","donald",1234);
persons[2] = new Person();
persons[3] = new Person();
persons[4] = new Person();
persons[5] = new Person();
persons[6] = new Person();
persons[7] = new Person();
persons[8] = new Person();       
 persons[9] = new Person();
 
 Scanner kbInteger = new Scanner(System.in);
Scanner kdString = new Scanner(System.in);
 
 for(int i =0 ;i<=10;i++)
 {
    System.out.println("Enter password :");
    int k = kbInteger.nextInt(); 
  
System.out.println("Enter username");
 
   String kc = kdString.nextLine();
  
if((k==persons[i].password) && (kc.equals(persons[i].username)) )
{
   System.out.println("Welcome");
    System.out.println(persons[i]);        
                                   
        }
   
else{
    System.out.println("Incorrect password or username");
   }}}}
 

I am not getting the right output for this....this program it is suppose to search all the persons class and if there is a match of password and username output the results.

[Joanne Neal]

What output are you getting ? My guess would be an IndexOutOfBoundsException. Arrays are indexed from 0 to length -1.
Your for loops are looping from 0 to length.
Change

for(int i =0 ;i<=10;i++)

to

for(int i =0 ;i<persons.length;i++)

and see if that helps.

I've used persons.length instead of 10, as this will allow you to change the size of your persons array without having to worry about changing the for loop.

[fred rosenberger]

PLEASE STOP POSTING NEW THREADS each time you have a new question. It gets very hard for people to follow where you are, what you're stuck on, what advice you've been given...

I'm going to close all the others. We'll make THIS one your offical thread. All follow ups should go here.

Thanks

[Ulf Dittmer]

The following 4 lines should be outside of the "for (int i=0 ..." loop

    System.out.println("Enter password :");
    int k = kbInteger.nextInt(); 
System.out.println("Enter username");
   String kc = kdString.nextLine();

As it is, for each input only a single Person object is checked, instead of all of them.