Question

Write a Java program to do the following: Ask the user to enter 10 first names (one word - no hyphen or apostrophe) using the keyboard.

1) Display the list of names one per line on the Console.

2) Display the names again, after eliminating duplicates using a HashSet (Your code MUST use HashSet).

Answer 1

#source code:

import java.util.*;

public class Test{

public static void main(String args[]){

Scanner input=new Scanner(System.in);

String[] data=new String[10];

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

System.out.print("Enter input string"+(i+1)+": ");

data[i]=input.next();

}

System.out.println("User Enter Data:");

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

System.out.println(data[i]);

}

HashSet<String> userData = new HashSet<>(Arrays.asList(data));

System.out.println("After using hashset:");

for(String datasub:userData){

System.out.println(datasub);

}

}

}

#output:

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