Question

Create a method named stringOperations () that accepts a string variable.

This method must perform the following operations:

               Split the sentence into an array

               Display each element in the array on a seprate line using “ForEach”

               Print the first element in the array, using the array syntax

               Tell the user where the second word starts

               Display the first 3 characters of the second word

In your man method, ask the user to enter a sentence of 5 words. Catch any errors.

Invoke the method StringOperation () passing what was entered as an argument.

Answer 1

import java.util.*;
public class Main
{
static void StringOperation(String s)
{
String t;
String []r=s.split(" ");
       if(r.length!=5)//if it not a length of 5
       {
       //return back
       System.out.println("enter sentence with 5 words");
       return;
       }
       //using for each loop
       for(String p:r)
       {
       System.out.println(p);
       }
       //first value of sentence using index 0
       System.out.println(r[0]);
       //we can find index of second word on sentence using indexOf
       int index=s.indexOf(r[1]);
       System.out.println("The second word found at "+index);
       //we can use substring to print first n characters
       System.out.println("the first 3 characters of second word is "+r[1].substring(0,3));
}
   public static void main(String[] args) {
       String s,t;
       System.out.println("Enter the sentence with 5 words");
       Scanner in=new Scanner(System.in);
       s=in.nextLine();
       StringOperation(s);
   }
}