Question

Given a Scanner reference variable named input that has been associated with an input source consisting of a sequence of lines, write the code necessary to read in every line and print them all out on a single line, separated by a space.Hint: Use input.nextLine() to read a line and use input.hasNextLine() to test if the input has a next line available to read.

Answer 1

Answer:

Explanation:

Code

import java.util.Scanner;

public class FileReader{

  public static void main(String []args) throws FileNotFoundException {

      Scanner scanner = new Scanner(new FileInputStream(new File("D:/input.txt")));

      String output="";

      while(scanner.hasNextLine()){

          output+=scanner.nextLine()+" ";

      }

      System.out.println(output);

  }

}

Code Explanation

Create scanner object by passing file input stream which will read file as input.

Then declare a string variable which will cancatinate the file text into single line util we don't have any other input from scanner.

Then print that output.

Input File

Hello this is dummy

file.

happy holidays

bye

Output

Hello this is dummy file. happy holidays bye