Provide a class for authoring a simple letter. In the constructor, supply the names of the sender and the recipient:
Provide a class for authoring a simple letter. In the constructor, supply the names of the sender and the recipient:
public Letter(String from, String to)
Supply a method
public void addLine(String line)
to add a line of text to the body of the letter.
Supply a method
public String getText()
that returns the entire text of the letter. The text has the form:
Dear recipient name:
blank line
first line of the body
second line of the body
. . .
last line of the body
blank line
Sincerely,
blank line
sender name
Also supply a class LetterPrinter that prints this letter.
Dear John:
I am sorry we must part.
I wish you all the best.
Sincerely,
Mary
Construct an object of the Letter class and call addLine twice.
Hints: (1) Use the concat method to form a longer string from two shorter strings. (2) The special string "\n" represents a new line. For example, the statement
body = body.concat("Sincerely,").concat("\n");
adds a line containing the string "Sincerely," to the body.
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