sample8.java

import java.util.ArrayList;
import java.util.LinkedHashSet;
import java.util.Scanner;

public class sample8 {

 public static void getData(LinkedHashSet<Bank> bankHashSet) {
 Scanner sc = new Scanner(System.in);
 String str = "";

 do {
 System.out.println("enter data");
 Bank b = new Bank();
 b.setAccid(sc.nextInt());
 sc.nextLine();
 b.setAccName(sc.nextLine());
 b.setAccBal(sc.nextInt());

 boolean exist = alreadyExist(bankHashSet, b);
 if (!exist)
 bankHashSet.add(b);
 sc.nextLine();
 System.out.println("Do you want to continue?");
 str = sc.nextLine();
 } while (str.equals("y"));
 sc.close();
 }

 public static boolean alreadyExist(LinkedHashSet<Bank> bankHashSet, Bank b) {
 for (Bank bank : bankHashSet) {
 if (bank.getAccid() == b.getAccid()) {
 System.out.println("Acc Id already exists");
 return true;
 }
 }
 return false;
 }

 public static void display(LinkedHashSet<Bank> bankHashSet) {
 for (Bank b : bankHashSet) {
 System.out.println(b.getAccid() + " --- " + b.getAccName() + " - " + b.getAccBal());
 }
 }

 public static void main(String[] args) {
 LinkedHashSet<Bank> bankHashSet = new LinkedHashSet<>();
 getData(bankHashSet);
 display(bankHashSet);
 }
}