How to Take Multiple String Input in Java Using Scanner

In Java, Scanner is a class that provides methods for input of different primitive types. It is defined in java.util package. In this section, we will learn how to take multiple string input in Java using Scanner class.

We must import the package before using the Scanner class. For example, if want to take input a string or multiple string, we use naxtLine() method. It is only a way to take multiple string input in Java using the nextLine() method of the Scanner class.

Java nextLine() Method

The nextLine() method moves the scanner down after returning the current line. It reads String input including the space between the words. It does not accept any parameter. It returns a String (line) of that was skipped.

Syntax:

The method throws the NoSuchElementException if it does not find a line and throws IllegalStateException if the Scanner is closed.

Let’s create a program that takes multiple String input.

In the following example, we have created an instance of the Scanner class. After that, we have invoked the nextLine() method that takes the string as input. At last, with the help of a for-each loop, we have printed all the strings that we have entered.

MultipleStringInputExample1.java

  import java.util.Scanner;  public class MultipleStringInputExample1  {  public static void main(String[] args)   {  Scanner sc = new Scanner(System.in);  System.out.print(“Please enter the number of strings you want to enter: “);   //takes an integer input         String[] string = new String [sc.nextInt()];  //consuming the <enter> from input above  sc.nextLine();   for (int i = 0; i < string.length; i++)   {  string[i] = sc.nextLine();  }  System.out.println(“nYou have entered: “);  //for-each loop to print the string  for(String str: string)   {  System.out.println(str);  }  }  }  

Output:

Please enter the number of strings you want to enter: 5  Robert  Harry  Charlie  Thomas  David    You have entered:   Robert  Harry  Charlie  Thomas  David

Let’s see another example.

In the following example, we have used the Scanner class. But did not use the nextLine() method. Instead of it, we have used forEachRemaining() method.

It is a Java Interface Spliterator that is used to perform the specified action for each element sequentially in the current thread. It executes until all elements have been processed or the action throws an exception. It does not return anything.

Syntax:

It throws NullPointerException if the action is null.

MultipleStringInputExample2.java

  import java.util.Scanner;  public class MultipleStringInputExample2  {  public static void main(String[] args)   {  //creating an object of the Scanner class  Scanner sc = new Scanner(System.in);  System.out.println(“Enter the elements: “);  //printing the elements   sc.forEachRemaining(System.out::println);  }  }  

Output:

Enter the elements:   Java  Java  Python  Python  Pascal  Pascal  C++  C++

Using Lambda Expression

We can also write the above program in the following manner by using the lambda expression.

MultipleStringInputExample3.java

  import java.util.Scanner;  public class MultipleStringInputExample3  {  public static void main(String[] args)   {  //object of the Scanner class  Scanner sc= new Scanner(System.in);  //lambda expression  sc.forEachRemaining(str -> System.out.println(str));  }  }  

Output:

Canada  Canada  America  America  Russia  Russia  France  France

The following example also takes the multiple String input. But in this example, we have used another method hasNextLine(). The method returns true if there is another line of input of this scanner. The while loop execute until the method hasNextLine() returns false.

MultipleStringInputExample4.java

  import java.util.Scanner;  public class MultipleStringInputExample4  {  public static void main(String[] args)   {  //creating an object of the Scanner class  Scanner sc = new Scanner(System.in);   while(sc.hasNextLine())  {  //takes the string input and prints the same string  System.out.println(sc.nextLine());  }  }  }  

Output:

Apple  Apple  Grapes  Grapes  Watermelon  Watermelon

In the following example, we have used a for loop that executes up to n times. Inside the loop, we have called the nextLine() method that takes the String input.

MultipleStringInputExample5.java

  import java.util.Scanner;  public class MultipleStringInputExample5  {  public static void main(String[] args)   {  //n is the number of strings we want to enter      int n=3;      System.out.println(“Enter the elements: “);  //creating object of the Scanner class  Scanner sc = new Scanner(System.in);  for(int i = 0; i < n; i++)  {  //takes string as input      String str = sc.nextLine();  //prints the same string  System.out.println(str);  }  }  }  

Output:

Enter the elements:   Data Structure  Data Structure  Web Services  Web Services  Web Designing   Web Designing

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