The given code finds the longest word from the string.

import java.util.*;

class LongestWord
{
Scanner input=new Scanner(System.in);
System.out.println("Enter string: ");
String str=input.nextLine();
String stringArray[] = str.split("\\s");
public String compare(String st1, String st2){
if(st1.length()>st2.length()){
return st1;
}
else{
return st2;
}
}
LongestWord(){
String word = "";
for(int i=0;i<stringArray.length;i++){
if(i==0){
word = stringArray[0];
}
word = compare(word, stringArray[i]);
}
System.out.println("Longest word = " + word);
}
public static void main(String []args){
new LongestWord();
}
}

how can we write the above program by separating each word of the string, not storing them in an array and then finding the longest word using.(without using scanner class)