How to scan a string in java and then concate it with other string?

Question

The code is not scanning the second string form user. It just prints 'Hello' second string is not printed.

package online_questions;
import java.util.Scanner;
public class Add {
public static void main(String[] args) {
    // TODO Auto-generated method stub
    Scanner scan = new Scanner(System.in);
    int i = 4;
    double d = 4.0;
    String s = "Hello ";
    int a = scan.nextInt();
    double b = scan.nextDouble();
    String c = scan.nextLine();
    System.out.println(i+a);
    System.out.println(d+b);
    System.out.println(s + c);
}

}

score 0 · Answer 1 · answered Apr 09 '17 at 05:39

0

After reading double b there will be a newline character in the buffer. nexLine() will read upto new line character '\0 so that's why your getting empty string simply addscan.nextLine();after reading your double

answered Apr 09 '17 at 05:39

gajapathy p

113
12

score 0 · Answer 2 · answered Apr 09 '17 at 05:40

0

You need to call nextLine after nextDouble.

double b = scan.nextDouble();
scan.nextLine();
String c = scan.nextLine();

answered Apr 09 '17 at 05:40

alayor

3,336
4
20
39

score 0 · Accepted Answer · answered Apr 09 '17 at 05:40

0

after

double b = scan.nextDouble();

add

scan.nextLine();

The methods nextInt nextDouble etc doens't move to the next line automatically. So you need to call them explicitely.

answered Apr 09 '17 at 05:40

stinepike

50,967
14
89
108

How to scan a string in java and then concate it with other string?

3 Answers3