Having a few difficulties with charAt...

Question

Hello,
I am a beginner to Java. I know most of the basics and I am still in a learning process. I am trying to write a program that lets a user enter in any word and prints out the number of vowels and consonants (and any other character) in the word. My first problem is understanding the concept of what I am supposed to do. I am extremely confused. How am I suppose to know to know what word a user would write? I won't know which character positions to use unless I know the word, which is the hard part. Does anyone know how to write this program, and if so, how? I appreciate all help. Thank you!

Answer 1

import java.io.*;
public class test{
public static void main(String[] args) {
try{
     BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
// in is the object that allows things to be read from the user
     System.out.print("Please enter a string: ");
     String str = in.readLine(); // tells the system to accept user input
     System.out.println("This is the string typed by the user: "+str);
// loop and char check is put into here
}catch(Exception e){}
this would read the user input and allow u to start ur program off wat you wan to do then is probably use the string.charAt() method in a for loop to cycle through all the letters in the given input and check wat type of char it is.. then print out ur results.
so the program will like this:
import java.io.*;
public class test{
public static void main(String[] args) {
try{
     BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
     System.out.print("Please enter a string: ");
     String str = in.readLine();
     System.out.println("This is the string typed by the user: "+str);
     int vowel = 0;
     int consta = 0;
     for(int i = 0;i < str.length(); i++){
     char c = str.charAt(i);
     if((c=='a')||(c=='e')||(c=='i')||(c=='o')||(c=='u')) vowel++;
     // checks for vowels and increments counter.
     else if(!(c=='a')&&!(c=='e')&&!(c=='i')&&!(c=='o')&&!(c=='u')) consta++;
     // this conditions shud be true if not any vowel so must be constanent
     System.out.println("there were "+vowel+" Vowels and "+consta+" Constanents.");
}catch(Exception e){}
this should work for u... its a very simple example and you can use other things to check the chars but its a good place to start. you will need the change the if statements though if you want to check for more detail on the strings.