Circle program

/*

 * The Circle class models a circle with a radius and color.

 */

public class Circle {    // Save as "Circle.java"

   // Private instance variables

   private double radius;

   private String color;

  

   public Circle(double r, String c) {

      radius = r;

      color = c;

   }

  

   // Public methods

   public double getRadius() {

      return radius;

   }

   public String getColor() {

      return color;

   }

   public double getArea() {

      return radius * radius * Math.PI;

   }

}

/*

 * A Test Driver for the "Circle" class

 */

class TestCircle {   

   public static void main(String[] args) {   // Program entry point

      // Declare and Construct an instance of the Circle class called c1

      Circle c1 = new Circle(2.0, "blue"); 

      System.out.println("The radius is: " + c1.getRadius()); 

            // use dot operator to invoke member methods

      System.out.println("The color is: " + c1.getColor());

      System.out.printf("The area is: %.2f%n", c1.getArea());

        System.out.println("The area is" +  c1.getArea());

  

   }

}

Bank Account - Version 1

public class BankAccount{
private int accountNumber;
private int balance;

public BankAccount(int aNo, int bal){
accountNumber = aNo;
balance=bal;
}
void displayDetails(){
System.out.println("The acccount number is" + accountNumber);
System.out.println("The balance is" + balance );
}

}
class AccountTest{
public static void main(String a[]){
BankAccount b = new BankAccount(1001, 5000);
b.displayDetails();
}

}