Question

Write a program using Java Streams that reads an arbitrary text file

and creates pairs from everything it finds in the file that is a number and the word that

precedes that number.

Example input: I need to buy 5 notebooks and 4 folders in 2 days for school.

Output. buy 5 and 4 in 2

Answer 1

If you have any doubts, please give me comment...

import java.util.*;

import java.io.*;

class PairWordNum{

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

Scanner in = new Scanner(new File("input.txt"));

String w = "";

while(in.hasNext()){

if(in.hasNextInt()){

int n = in.nextInt();

System.out.print(w+" "+n+" ");

}

else{

w = in.next();

}

}

System.out.println();

in.close();

}

}