Answer:
See explaination
Explanation:
import java.io.File;
import java.io.IOException;
import java.util.Scanner;
import java.util.StringTokenizer;
public class SecretMessage {
public static void main(String[] args)throws IOException
{
File file = new File("secret.txt");
StringBuilder stringBuilder = new StringBuilder();
String str; char ch; int numberOfTokens = 1; // Changed the count to 1 as we already consider first workd as 1
if(file.exists())
{
Scanner inFile = new Scanner(file);
StringTokenizer line = new StringTokenizer(inFile.nextLine()); // Since the secret.txt file has only one line we dont need to loop through the file
ch = line.nextToken().toUpperCase().charAt(0); // Storing the first character of first word to string builder as mentioned in problem
stringBuilder = stringBuilder.append(ch);
while(line.hasMoreTokens()) { // Looping through each token of line read using Scanner.
str= line.nextToken();
numberOfTokens += 1; // Incrementing the numberOfTokens by one.
if(numberOfTokens == 5) { // Checking if it is the fifth word
ch = str.toUpperCase().charAt(0);
stringBuilder = stringBuilder.append(ch);
numberOfTokens =0;
}
}
System.out.println("----Secret Message----"+ stringBuilder);
}
}
}
