12. a. Create a class named Checkup with fields that hold a patient Number, two

Question

12. a. Create a class named Checkup with fields that hold a patient Number, two blood pressure figures(systolic and diastolic), and two cholesterol figure(LDL and HDL). Include methods to get and set each of the fields. Include a method named computeRatio() that divides LDL choloesterol by HDL cholesterol and displays the result. Inclue additional method named ExplainRatio() that explains that HDL is known as "good cholesterol' and that a ratio of 3.5 or lower is considered optimum. Save the class as Checkup.java.

b. Create a class named TestCheckup whose main() method declares four Checkup objects. Provide values for each field for each patient. Then display the values. Blood pressure numbers are usually displayed with a slash between the systolic and diastolic values.(Typical numbers are values such as 110/78 or 130/90.)With the cholesterol figures, display the explanation of the cholesterol ratio calculation.(Typical numbers are values such as 100 and 40 or 10 and 70.) Save the program as TestCheckup.java.

Explanation / Answer

Checkup.java

public class Checkup {
    private int patientNumber;
    private int systolic;
    private int diastolic;
    private int ldl;
    private int hdl;
    public Checkup(int patientNumber, int systolic, int diastolic, int ldl,
            int hdl) {
        this.patientNumber = patientNumber;
        this.systolic = systolic;
        this.diastolic = diastolic;
        this.ldl = ldl;
        this.hdl = hdl;
    }
    public int getPatientNumber() {
        return patientNumber;
    }
    public void setPatientNumber(int patientNumber) {
        this.patientNumber = patientNumber;
    }
    public int getSystolic() {
        return systolic;
    }
    public void setSystolic(int systolic) {
        this.systolic = systolic;
    }
    public int getDiastolic() {
        return diastolic;
    }
    public void setDiastolic(int diastolic) {
        this.diastolic = diastolic;
    }
    public int getLdl() {
        return ldl;
    }
    public void setLdl(int ldl) {
        this.ldl = ldl;
    }
    public int getHdl() {
        return hdl;
    }
    public void setHdl(int hdl) {
        this.hdl = hdl;
    }
    public double computeRatio() {
        return ((double) ldl) / hdl;
    }
    public void explainRatio() {
        System.out.println("HDL is known as 'good cholesterol'. A ratio of 3.5 or lower is considered optimum.");
    }
   
}

------------------------------------------

TestCheckup.java

public class TestCheckup {

    public static void displayCheckup(Checkup c) {
        System.out.println("Results for patient "+c.getPatientNumber());
        System.out.println("Blood pressure: "+c.getSystolic()+"/"+c.getDiastolic());
        System.out.println("LDL cholesterol: "+c.getLdl());
        System.out.println("HDL cholesterol: "+c.getHdl());
        System.out.println("Cholesterol ratio: "+c.computeRatio());
        c.explainRatio();
    }
   
    public static void main(String[] args) {
        Checkup c1 = new Checkup(999,110,78,100,40);
        Checkup c2 = new Checkup(1000,110,78,10,70);
        Checkup c3 = new Checkup(1001,130,90,100,40);
        Checkup c4 = new Checkup(1002,130,90,10,70);
        displayCheckup(c1);
        displayCheckup(c2);
        displayCheckup(c3);
        displayCheckup(c4);
    }

}

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