JAVA

How can I read command line arguments and then analyze if the arguments from command line is composed by pure alphabetic ( both upper and lower case). If I input anything like Adv3 or Jdk it will out put as the phrase is Invalid

#/ public class PhraseAnalyzer / public static void main (String[] args) 1 isvalidphrase (args); 3 / public static boolean isValidphrase (String [] phrase) f / State the defalut boolean value of phrase */ boolean isvalidPhrase = true ; / Seperates words to characters / char [] CH= phrase tocharArray () : for (int i=0;i