Thread: having problem with data structure

im having problem to solve this question,can someone teach me the code to solve this problem
java.JPG

as this is my progress app class

my code.JPG

here is my class
class 1.JPGclass 2.JPG

Please post your code directly using code or highlight tags which are explained here. The graphics are very hard/impossible to read and the text they contain cannot be copied and pasted into our own work areas.

public class PatientApp
{
    public static void main(String[]args)
 
    {
        String patName; 
        String patIC; 
        String treatment; 
        String treatmentDate;
        String patStatus;
 
        ArrayList patientAL =new ArrayList();
        ArrayList childAL=new ArrayList();
 
 
        for(int i=0;i<2;i++)
        {
            patName=JOptionPane.showInputDialog("Patient Name : ");
            patientAL.add(patName);
            patIC=JOptionPane.showInputDialog("Patient IC : ");
            patientAL.add(patIC);
            treatment=JOptionPane.showInputDialog("treatment (extraction, restoration,scaling) : ");
            patientAL.add(treatment);
            treatmentDate=JOptionPane.showInputDialog("Date : ");
            patientAL.add(treatmentDate);
            patStatus=JOptionPane.showInputDialog("status (children or adult): ");
            patientAL.add(patStatus);
 
        }
 
        for(int j=0;j<2;j++)
        {            
           JOptionPane.showInputDialog("Enter patient IC no without(-) : ");
 
 
        }
 
    }
}

Progress. Now explain specifically what you need help with. Copy/paste the assignment step(s) you're working on and the code you've written for those parts, any compiler or run time errors you're getting, describe any program behaviors you'd like to change, post sample runs if you can, and ask specific questions.

this my class

public class Patient
{
 
    private String patName; //patient’s name
    private String patIC; //patient’s NRIC/birth cert.
    private String treatment; //type of treatment received:
    private String treatmentDate; //in format dd/mm/yyyy
    private String patStatus; //children or adult
 
    //normal constructor
    public Patient(String name,String IC, String treatmnt,String date, String status)
    {
        patName=name;
        patIC =IC;
        treatment =treatmnt;
        treatmentDate=date;
        patStatus=status;
 
    }
 
 
   //accessor methods
    public String getName()
    { 
        return patName;
    }
 
    public String getIC()
    {
        return patIC;
    }
 
    public String getTreatment()
    {
        return treatment;
    }
 
    public String getTreatmentDate()
    {
        return treatmentDate;
    }
 
    public String getStatus()
    {
        return patStatus;
    }
 
    public void setTreatment(String treatmnt)//mutator method
    {
        treatment=treatmnt;
    } 
 
 
    public String toString()//return string
    {
        String s;
        s="Patient Name : "+patName+"Patient IC : "+patIC+"Treatment : "+treatment+"Date : "+treatmentDate+"Status : "+patStatus;
 
        return s;
 
 
    }
}

i having problem to do this
question.JPG

In your main method you didn't instantiate the patient class so why you build a class that you are not using?

If you want to search a patient using patient’s NRIC/birth cert then its better if you go for Hash-map instead of arraylist.
make patient patient’s NRIC/birth cert as a key for hash-map and value as a patient class object.

HashMap<String, Patient> patientHashMap = new HashMap<>();

and then populate the hashmap as

patientHashMap.put(patIC,new Patient(patName, patIC, treatment, treatmentDate, patStatus));

i suggest you to use hash-map because it's easy with the hash-map to search using key based criteria.

if(patientHashMap.containsKey(patIC)){
        	   System.out.println(patientHashMap.get(patIC));
           }

.