Question

1. Write, compile, and test a class that displays your first name on the screen. Save the class as Name.
2. Write, compile, and test a class that displays your full name, street address and city, on three separate lines on the screen. Save the class as Address.
3. Write a java program which add two numbers and print the result on screen. Save the class as Add2.
4. Write a java program which accepts two numbers from user multiply them and print the result on screen. Save the class as Multiply2.
5. Write a Java class that declares variables to represent the length and width of a room in feet. Accept appropriate values to the variables from user. Compute and display the floor space of the room in square feet (area = length * width). Display explanatory text with the value—for example, The floor space is 375 square feet. Save the class as Room.
6. Write a class that declares a variable named minutes, which holds minutes worked on a job, and assign a value. Display the value in hours and minutes; for example, 197 minutes becomes 3 hours and 17 minutes. Save the class as Time

Answer 1

Write, compile, and test a class that displays your first name on the screen. Save the class as Name.

PROGRAM

//class definition
public class Name {
   //main function definition
   public static void main(String[] args) {
       //print the first name
       System.out.println("Jonathan");
   }
}

OUTPUT

Write, compile, and test a class that displays your full name, street address and city, on three separate lines on the screen. Save the class as Address.

PROGRAM

//class definition
public class Address {
   //main function definition
   public static void main(String[] args) {
       //print full name
       System.out.println("Jonathan Dixon");
       //print street
       System.out.println("Street number 66");
       //print city
       System.out.println("New York");
   }

}

OUTPUT

Write a java program which add two numbers and print the result on screen. Save the class as Add2.

PROGRAM

//class definition
public class Add2 {
   //main function definition
   public static void main(String[] args) {
       // declare and initialize variables
       int a = 10, b =20;
       int sum;
      
       //calculate sum
       sum = a+b;
      
       //print sum
       System.out.println("Sum : " +sum);

   }
}

OUTPUT

Write a java program which accepts two numbers from user multiply them and print the result on screen. Save the class as Multiply2.

//class definition
public class Multiply2 {
   //main function definition
   public static void main(String[] args) {
       // declare and initialize variables
       int a = 10, b =20;
       int product;
      
       //calculate sum
       product = a*b;
      
       //print sum
       System.out.println("Product : " +product);

   }
}

NOTE : Answered the first 4 question as per HomeworkLib policy