Create a program that keeps track of the following information input by the user
ID: 3788985 • Letter: C
Question
Create a program that keeps track of the following information input by the user:
First Name, Last Name, Phone Number, Age
Now - let's store this in a multidimensional array that will hold 10 of these contacts. So our multidimensional array will need to be 10 rows and 4 columns.
You should be able to add, display and remove contacts in the array. Look down here.
******************************************************************************************************************************************************************************************************************
this code comes close to what I am looking for except that - it stores more than 10 contacts. you can input 100 contacts if you like. I NEED IT TO STORE <= 10 CONTACTS
import java.util.*;
public class contact {
private String fname;// define fname
private String lname; // define lname
private String phone; // define phone
private int age; // define age
public contact()
{
}
public static void main(String args[])
{
ArrayList<contact> list1 = new ArrayList<contact>(); // Create a array of list
contact c1=new contact(); // create new contact
int choice=0;
do
{
Scanner sc1=new Scanner(System.in); // create scanner object for console input
System.out.println("Contact Information Database:");
System.out.println("-----------------Menu--------------:");
System.out.println("1. Add a New Contact");
System.out.println("2. Display Contacts");
System.out.println("3. Remove a Contact");
System.out.println("4. Exit");
choice=sc1.nextInt();
if(choice==1)
{
contact c=new contact();
Scanner sc=new Scanner(System.in);
System.out.println("Enter First Name");
c.fname=sc.nextLine(); // First name input
System.out.println("Enter Last Name");
c.lname=sc.nextLine(); // Last Name
System.out.println("Enter Phone No");
c.phone=sc.nextLine(); // Phone number
System.out.println("Enter Age");
c.age=sc.nextInt(); // Enter Age
list1.add(c);
}
if(choice==2)
{
System.out.println("------------------------------List of Contact------------------------------");
for(int i=0;i<list1.size();i++)
{
System.out.println(""+(i+1)+" "+((contact)list1.get(i)).lname+" "+((contact)list1.get(i)).fname+" "+((contact)list1.get(i)).phone+" "+((contact)list1.get(i)).age); // Printed as SNO, LAST NAME , FIRST NAME, PHONE, AGE
}
System.out.println("---------------------------------------------------------------------------");
}
if(choice==3)
{
String dlt_name;
int dlt_sn=-1;
Scanner sc2=new Scanner(System.in);
System.out.println("Enter First Name of the person that you want to remove");
dlt_name=sc2.nextLine(); // Name to delete
int flag=0;
for(int i=0;i<list1.size();i++)
{
contact c2=new contact();
c2=(contact)list1.get(i); // get all the component of list
if(c2.fname.equals(dlt_name)) // check whether the name is exists in list or not
{
System.out.println(""+(i+1)+" "+c2.lname+" "+c2.fname+" "+c2.phone+" "+c2.age);
flag=1;
}
}
if(flag==1)
{
System.out.println("Type Serial No of The Record To Delete");
dlt_sn=sc2.nextInt(); // get input to delete the record
if(dlt_sn>=1 && dlt_sn<=list1.size())
{
list1.remove(dlt_sn-1); // remove record from a particulat location
}
else
{
System.out.println("Wrong Index");
}
}
else
{
System.out.println("No Record Found");
}
}
if(choice==4)
{
break;
}
}while(true);
}
}
Explanation / Answer
See,I had modified the add case. I hopes it will work for 10 contacts.The modified statements are written in bold format
import java.util.*;
public class contact {
private String fname;// define fname
private String lname; // define lname
private String phone; // define phone
private int age; // define age
public contact()
{
}
public static void main(String args[])
{
ArrayList<contact> list1 = new ArrayList<contact>(); // Create a array of list
contact c1=new contact(); // create new contact
int choice=0;
do
{
Scanner sc1=new Scanner(System.in); // create scanner object for console input
System.out.println("Contact Information Database:");
System.out.println("-----------------Menu--------------:");
System.out.println("1. Add a New Contact");
System.out.println("2. Display Contacts");
System.out.println("3. Remove a Contact");
System.out.println("4. Exit");
choice=sc1.nextInt();
if(choice==1)
{
if(list1.size() < 10){ // only adds when the less than 10 contacts are there.Otherwise,it won't add and will show a message
contact c=new contact();
Scanner sc=new Scanner(System.in);
System.out.println("Enter First Name");
c.fname=sc.nextLine(); // First name input
System.out.println("Enter Last Name");
c.lname=sc.nextLine(); // Last Name
System.out.println("Enter Phone No");
c.phone=sc.nextLine(); // Phone number
System.out.println("Enter Age");
c.age=sc.nextInt(); // Enter Age
list1.add(c);
}
else{
System.out.println("The list is full . Max = 10 contacts ");
}
}
if(choice==2)
{
System.out.println("------------------------------List of Contact------------------------------");
for(int i=0;i<list1.size();i++)
{
System.out.println(""+(i+1)+" "+((contact)list1.get(i)).lname+" "+((contact)list1.get(i)).fname+" "+((contact)list1.get(i)).phone+" "+((contact)list1.get(i)).age); // Printed as SNO, LAST NAME , FIRST NAME, PHONE, AGE
}
System.out.println("---------------------------------------------------------------------------");
}
if(choice==3)
{
String dlt_name;
int dlt_sn=-1;
Scanner sc2=new Scanner(System.in);
System.out.println("Enter First Name of the person that you want to remove");
dlt_name=sc2.nextLine(); // Name to delete
int flag=0;
for(int i=0;i<list1.size();i++)
{
contact c2=new contact();
c2=(contact)list1.get(i); // get all the component of list
if(c2.fname.equals(dlt_name)) // check whether the name is exists in list or not
{
System.out.println(""+(i+1)+" "+c2.lname+" "+c2.fname+" "+c2.phone+" "+c2.age);
flag=1;
}
}
if(flag==1)
{
System.out.println("Type Serial No of The Record To Delete");
dlt_sn=sc2.nextInt(); // get input to delete the record
if(dlt_sn>=1 && dlt_sn<=list1.size())
{
list1.remove(dlt_sn-1); // remove record from a particulat location
}
else
{
System.out.println("Wrong Index");
}
}
else
{
System.out.println("No Record Found");
}
}
if(choice==4)
{
break;
}
}while(true);
}
}
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