Why is the Scanner skipping nextLine after using next or nextFoo

0 votes

We are using the Scanner methods nextInt() and nextLine() for reading input.

It looks like this:

System.out.println("Enter numerical value");    
int option;
option = input.nextInt(); // Read numerical value from input
System.out.println("Enter 1st string"); 
String string1 = input.nextLine(); // Read 1st string (this is skipped)
System.out.println("Enter 2nd string");
String string2 = input.nextLine(); // Read 2nd string (this appears right after reading numerical value)

The problem is that after entering the numerical value, the first input.nextLine() is skipped and the second input.nextLine() is executed so that my output looks like this:

Enter numerical value
3// This is my input
Enter 1st string    // The program is supposed to stop here and wait for my input, but is skipped
Enter 2nd string    // ...and this line is executed and waits for my input

We tested our application and it looks like the problem lies in using input.nextInt(). If we delete it, then both 

string1 = input.nextLine() and string2 = input.nextLine() are executed as I want them to be.

Aug 28, 2018 in Java by Parth
• 4,630 points
1,419 views

1 answer to this question.

0 votes
public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int i = sc.nextInt();
        sc.nextLine();
        double d = sc.nextDouble();
        sc.nextLine();
        String s = sc.nextLine();

        System.out.println("String: " + s);
        System.out.println("Double: " + d);
        System.out.println("Int: " + i);
    }
answered Aug 28, 2018 by samarth295
• 2,220 points

Related Questions In Java

0 votes
2 answers

Scanner is skipping nextLine() after using next() or nextFoo()?

use input.nextLine(); after your nextInt() function for example:- input.nextInt(); ...READ MORE

answered May 11, 2019 in Java by Sourav Dangi
16,951 views
0 votes
1 answer

While using next() or nextfoo() , the upcoming nextLine() is skipped by scanner

That's because the Scanner.nextInt method does not ...READ MORE

answered Jun 6, 2018 in Java by mitto
• 160 points
2,587 views
0 votes
1 answer

Why the main() method in Java is always static?

As you might know, static here is ...READ MORE

answered May 9, 2018 in Java by geek.erkami
• 2,680 points
1,882 views
0 votes
1 answer

What is the concept of Immutability for strings in Java ? Why are strings immutable ?

According to Effective Java, chapter 4, page 73, ...READ MORE

answered May 11, 2018 in Java by Rishabh
• 3,620 points
1,303 views
+5 votes
4 answers

How to execute a python file with few arguments in java?

You can use Java Runtime.exec() to run python script, ...READ MORE

answered Mar 27, 2018 in Java by DragonLord999
• 8,450 points

edited Nov 7, 2018 by Omkar 79,307 views
+1 vote
1 answer

How to handle drop downs using Selenium WebDriver in Java

First, find an XPath which will return ...READ MORE

answered Mar 27, 2018 in Selenium by nsv999
• 5,500 points
7,920 views
0 votes
1 answer

What are the differences between getText() and getAttribute() functions in Selenium WebDriver?

See, both are used to retrieve something ...READ MORE

answered Apr 5, 2018 in Selenium by nsv999
• 5,500 points
16,940 views
0 votes
1 answer

Selenium JARS(Java) missing from downloadable link

Nothing to worry about here. In the ...READ MORE

answered Apr 5, 2018 in Selenium by nsv999
• 5,500 points

edited Aug 4, 2023 by Khan Sarfaraz 4,356 views
+1 vote
3 answers

What is the syntax to declare and initialize an array in java?

You can use this method: String[] strs = ...READ MORE

answered Jul 25, 2018 in Java by samarth295
• 2,220 points
3,139 views
0 votes
2 answers

What is the syntax to initialize an array?

Rather than learning un-Official websites learn from ...READ MORE

answered Aug 2, 2018 in Java by samarth295
• 2,220 points
688 views
webinar REGISTER FOR FREE WEBINAR X
REGISTER NOW
webinar_success Thank you for registering Join Edureka Meetup community for 100+ Free Webinars each month JOIN MEETUP GROUP