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POChild class not able to access the contents present in the ArrayList of parent class
 

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  1. POChild class not able to access the contents present in the ArrayList of parent class
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    <pre><code>abstract class PayRoll { List&lt;String&gt; nm=new ArrayList&lt;String&gt;(); List&lt;String&gt; id=new ArrayList&lt;String&gt;(); List&lt;String&gt; dob=new ArrayList&lt;String&gt;(); } class Employee extends PayRoll implements PayEmpInt { BufferedReader br=new BufferedReader(new InputStreamReader(System.in)); int n; String ename,eid,birth,pr_id; public void addEmployee() { try { System.out.print("\nEnter the number\t :"); n=Integer.parseInt(br.readLine()); for(int i=0;i&lt;n;i++) { System.out.print("\nEnter Employee name\t :"); ename=br.readLine(); System.out.print("\nEnter the Employee ID\t :"); eid=br.readLine(); System.out.print("\nEnter the D.O.B(mm-dd-yyy)\t :"); birth=br.readLine(); nm.add(ename); id.add(eid); dob.add(birth); } } catch(IOException e) { System.out.print("\nError while handling the Input. "+e); } } class Project extends Employee { public void display() { System.out.print("\nName\t\tID\t\tDOB"); for(int i=0;i&lt;id.size();i++) System.out.println(nm.get(i)+"\t"+id.get(i)+"\n"+dob.get(i)); } } import java.io.*; class PayMain { public static void main(String args[])throws IOException { int ch; BufferedReader br=new BufferedReader(new InputStreamReader(System.in)); while(true) { System.out.println("\nOptions:\n\t1. Employee DB\n\t2. Projects\n\t3. Exit"); ch=Integer.parseInt(br.readLine()); switch(ch) { case 1: Employee e=new Employee(); e.addEmployee(); System.out.print("\nEMPLOYEE LIST"); e.employeeDetails(); break; case 2: Project p=new Project(); p.display(); break; case 3: System.exit(0); } } } </code></pre> <p>}</p> <p>I'm able to call the method addEmployee from the main class. After adding employees, when I try to call the method display(present in Project), it doesn't print the contents of the List. </p> <p>I don't know why Project is not able to access the values of the List that are present in its parent class, Employee.</p> <p><b>Edit :</b> Added the main class. The thing is that I use addEmployee method to add new employees and employeeDetails display everything perfectly. But when I call p.search(), it doesn't display anything other than NAME ID DOB.</p> <p><b>Note :</b> And pardon me for the weird design. I'm new to Java. I'm doing a mini-project on employee management system(without using any DB software). So suggest me how to design it. Thanks! </p>
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    1. USSivaprasanna Sethuraman
    1. USSivaprasanna Sethuraman
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    1. COPlease show me the main class. I suspect you may have multiple instantiations.
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      1. USlordoku
    2. COWeird design. Why is a ``Project`` an ``Employee``? Strongly suggest to consider re-thinking your structure.
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      1. USqqilihq
    3. COI agree with @qqilihq, this is a weird architecture. I think project shouldn't extend anything. Also an employee isn't really a payroll.
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      1. USlordoku
 

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