関連ワード:  java get number of characters in string    java get number of occurrences in string    java get count of character in string    java find count of character in string    java count number of characters in string    java number of characters in string    java count number of occurrences in string    java find number of occurrences of substring in string    java get index of char in string    java get position of character in string  
結果 : java get number of characters in string