Example:Scanner.hasNext

gistfile1.java

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String str = new String();
        while(in.hasNext()) {
            String buf = in.nextLine();
            str = str + buf;
        }
        System.out.println(str);
    }
}