Input multiple sentances in string array [duplicate]

Question

I am trying to write a code in java where i will ask user to enter an array of strings and calculate the cumulative length of all the strings combined combined.

The issue i am having is with inputing the strings into array. The code i have written is:

import java.util.*;

public class abcstring {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter the number of strings");
        int n = sc.nextInt();
        String s[] = new String[n];
        int length = 0;
        
        for (int i = 0; i < n; i++) {
            System.out.println("Enter the" +(i+1)+" sentance");
            s[i] = sc.nextLine();
            length = length + s[i].length();
        }
        System.out.println("The total lenght of all sentances in array is " + length);
    }
}

For some reason the compiler skips through the first line of input like this:

Enter the number of strings:         
3                    
Enter the1 sentance                  
Enter the2 sentance              
hello world 12345              
Enter the3 sentance       
hello world 6789             
The total lenght of all sentances in 
array is 33

I have tried using next() instead of nextLine() but the question asked was for a string , i.e , including spaces. I tried using sc.next()Line.replace(' ','_') because I had a feeling it was because of the spaces but still no use.

peter duffy peter duffy · Accepted Answer · 2022-07-28T20:11:05

https://www.geeksforgeeks.org/why-is-scanner-skipping-nextline-after-use-of-other-next-functions/

It seems that the reading of the int reads the int but doesn't read a \n character that is directly after the int.

stdin: '1\n'
        ^
       cursor
call nextInt(): returns 1
stdin:'1\n'
        ^
call nextLine(): returns '\n'

Input multiple sentances in string array [duplicate]

1 Answers