How to use the hasNext() and next() methods-CodePudding

My goal is to read and print the words separately from standard input, without having to store them in an array or list.

I want this:

input: sun moon cloud

output: sun moon cloud (each word in a different line)

The following program keep waiting after printing "cloud". I don't know what the problem is

import java.util.Scanner;

class RandomWord{
    public static void main(String[] args){
        String palavra;
        Scanner s = new Scanner(System.in);
        while(s.hasNext()){
            palavra = s.next();
            System.out.println(palavra);
        }
    }
}

CodePudding user response：

You continuously reading the scanner. You have to read by scanner out of loop. For example 3 times invoking s.next(). Or create some loop end condition, for example text, "END".

If you pass all words in one line use .readLine()

CodePudding user response：

There are some similar questions, check some of theme. I think you can find answer for example here How to check the end of line using Scanner?