Create a class named BloodData that includes fields that hold a blood type (the

Question

Create a class named BloodData that includes fields that hold a blood type (the

four blood types are O, A, B, and AB) and an Rh factor (the factors are + and -).

Create a default constructor that sets the fields to “O” and “+”, and an overloaded

constructor that requires values for both fields. Include get and set methods for

each field. Save this file as BloodData.java. Create an application named

TestBloodData that demonstrates each method works correctly. Save the

application asTestBloodData.java.

Explanation / Answer

BloodData.java

public class BloodData
   {
       private String bloodType;
       private char rhFactor;
       public BloodData()
           {
               bloodType = "O";
               rhFactor = '+';
           }
       public BloodData(String type, char factor)
           {
               bloodType = type;
               rhFactor = factor;
           }
       public void setBloodType(String type)
           {
               this.bloodType = type;
           }
       public void setRhFactor(char factor)
           {
               this.rhFactor = factor;
           }
       public String getBloodType()
           {
               return bloodType;
           }
       public char getRhFactor()
           {
               return rhFactor;
           }
   }

TestBloodData.java

public class TestBloodData
   {
       public static void main(String[] args)
           {
               BloodData test001 = new BloodData();
               System.out.println("Blood Type: " + test001.getBloodType());
               System.out.println("RH Factor: " + test001.getRhFactor());
               BloodData test002 = new BloodData();
               test001.setBloodType("A");
               test002.setRhFactor('-');
               System.out.println();
               System.out.println("Blood Type: " + test002.getBloodType());
               System.out.println("RH Factor: " + test002.getRhFactor());
               System.out.println();
               BloodData test003 = new BloodData("B", '+');
               System.out.println("Blood Type: " + test003.getBloodType());
               System.out.println("RH Factor: " + test003.getRhFactor());
           }
   }

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