Q:

List of Strings example in Java

belongs to collection: Java List Programs

mahmoud2506
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2022-05-07
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We have to read total number string i.e. "n", create a list of the Strings and input "n" strings, add then to print the all stings of the list in Java.

Declare a list of String implemented by ArrayList:

    List<String> str_list = new ArrayList<String>();

To input the total number of strings and to input string from the user, we are using in which is an object of scanner class.

The statement to read string and add to the list in the loop is:

    str_list.add(in.next());

 

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mahmoud2506
2022-05-07
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Program:

import java.util.*;

public class ListExample {
  public static void main(String[] args) {
    //creating a list of integers
    List < String > str_list = new ArrayList < String > ();
    int n;
    Scanner in = new Scanner(System.in);
    System.out.print("Enter total number of strings: ");
    n = in .nextInt();

    for (int i = 0; i < n; i++) {
      System.out.print("Enter name " + (i + 1) + ": ");
      str_list.add( in .next());
    }

    //printing updated List
    System.out.println("string list: " + str_list);
    //printing elements
    System.out.println("List elements: ");
    for (String str: str_list) {
      System.out.println(str);
    }
  }
};

Output

Enter total number of strings: 5
Enter name 1: Delhi
Enter name 2: Noida
Enter name 3: Mumbai
Enter name 4: Gwalior
Enter name 5: Bhind
string list: [Delhi, Noida, Mumbai, Gwalior, Bhind]
List elements:
Delhi
Noida
Mumbai
Gwalior
Bhind

 

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