Pig Latin Converter - Java Pt. 1

/*
* Purpose: To convert an English sentence into Pig Latin.
*/
import java.util.*;
public class PigLatin {
public static void main(String[]args){
Scanner in = new Scanner(System.in);
String phrase;
System.out.print("English: ");
phrase = in.nextLine();
System.out.print("\nTranslation: " + phraseToPig(phrase));
}
public static boolean isCapitalized(String word){ //returns True if the word is capitalized
String firstLetter = word.substring(0,1), temp;
temp = firstLetter.toUpperCase();
return(firstLetter == temp);
}
public static String lowerCase(String word){ //converts String to Lower Case
return(word.toLowerCase());
}
public static String upperCase(String word){ //converts String to Upper Case
String firstLetter;
firstLetter = word.substring(0,1);
return(firstLetter.toUpperCase() + word.substring(1, word.length()));
}
public static String wordToPig(String english){ //converts english word to Pig Latin
String word = english;
int isCap = 0;
int position = hasAVowel(word);
if(isCapitalized(word)){
word = lowerCase(word);
isCap = 1;
}
if(position == word.length())
word += "ay";
else if(position == 0)
word += "yay";
else
word = word.substring(position, word.length()) + word.substring(0, position) + "ay";
if(isCap == 1)
word = upperCase(word);
return(word);
}
public static String phraseToPig(String phrase){ //converts english sentence to Pig Latin}
StringTokenizer token = new StringTokenizer(phrase);
String english, pigPhrase = "";
while(token.hasMoreTokens()){
english = token.nextToken();
pigPhrase += wordToPig(english) + " ";
}
return(pigPhrase);
}
public static int hasAVowel(String word){ //returns index of first vowel (all 10) (return -1 if no vowels in word)
int place = 0, lowest = word.length();
String vowel[] = {"a", "e", "i", "o", "u", "A", "E", "I", "O", "U"};
for(int i = 0; i place = word.indexOf(vowel[i]);
if(place < lowest && place != -1)
lowest = place;
}
return(lowest);
}
}