■charAt() Returns the character located at the specified index
■ concat() Appends one String to the end of another ( "+" also works)
■ equalsIgnoreCase() Determines the equality of two Strings, ignoring case
■ length() Returns the number of characters in a String
■ replace() Replaces occurrences of a character with a new character
■ substring() Returns a part of a String
■ toLowerCase() Returns a String with uppercase characters converted
■ toString() Returns the value of a String
■ toUpperCase() Returns a String with lowercase characters converted
■ trim() Removes whitespace from the ends of a String

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