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
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.