Provide a class called Letter for authoring a simple letter. The letter class has three data fields, the name of the sender, the name of the recipient, a body of the letter.

Question

1. Supply the class constructors (default , and overloaded )
2. Supply a method.
Public void addLine (String Line)

To add a line of text to the body of the letter
The addLine method should through an exception if the line is empty.
3. 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
4. Also supply a program LetterPrinter that asks the user to enter lines of text nd verifies that the lines are not empty and prints the following letter :
Dear teacher:
Line supplied by the user
Line supplied by the user

Sincerely,
Student name

Answer 1

This is the code what i tried but its not thw thing i want

import javax.swing.*;
public class Letter
{

private String sendername;
private String recipientname;
private String bodyletter;

public static void sender (String nsender)
{
String name= "a";

}

public static void recipient (String nrecipient)
{
String name= "b";
}

public static void letter (String bletter)
{
String letter="Studentletter";
}

public static void addLine (String line)
{
String linea=" ";
}

public String getText()
{
String body= "Dear natasha";
//System.out.println(body);
String line2 =" ";
//System.out.println(line2);
String line3=" Student of java class";
// System.out.println(line3);
String line4="question";
// System.out.println(line4);
String line5="sincerely";
//System.out.println(line5);
String line6=" ";
//System.out.println(line6);
String line7="john";
// System.out.println(line7);
String n =body+ "\n "+ line2 + "\n" + line3 + "\n" + line4 + "\n" + line5 + "\n" + line6 + "\n" + line7;
//return n ;
return getText();
}
public static void letterPrinter()
{
String s1="Dear Teacher !";
String user="I am a student of class java.";
String s= s1 + "\n" + user;
System.out.println(s);

String ns ="Sincerely ,";
String line6=" ";
System.out.println(line6);

String student = "b";
String a =ns +"\n" + student;
System.out.println(a);



}
public static void main(String[] args)
{


letterPrinter();

}

}

Answer 2

What does happen?