mapping CSV file to POJO

NAME,MOBILE,CITY,EMAIL

Alfreds,123566X,Delhi,abc@gmail.com

I have this file which has only two lines first is headers line second is values line.
Only two fileds are fixed in file NAME and MOBILE others are not fixed like file may be(NAME,MOBILE,PRODUCT) or may be (NAME,MOBILE,SUMMURY,ABC,XYZ) etc.

I want to map this file to entity class

public class MyPojo{
    private String NAME;
    private int MOBILE;
    private ???
    
    //getter and setter
}

Any help highly apperciated.
Suggest me any solution how can i do this.
Please help. Thanks in advance. New to programming world.

  File file=new File("file.csv");   
FileReader fr=new FileReader(file);   
BufferedReader br=new BufferedReader(fr);  
String [] line1 = br.readLine().split(",");
String [] line2 = br.readLine().split(",");

I will assume, for the sake of a simple answer, that there are no commas in the actual data. If you want to parse a more general CSV file, it would be better to use a library if you lack the confidence to do it fully from scratch.

You need to split each string at the commas so use String.split (https://docs.oracle.com/javase/8/docs/api/java/lang/String.html#split-java.lang.String-). Reading the documentation tells you to pass a "regex" for the delimiter. You can read more about regexes here but to match just a comma you can use a literal comma.

String header, data;
// Read file into the above strings
String[] headings = header.split(",");
String[] fields   = data.split(",");

Now you need to feed this into your class. Create a HashMap of the data and pass it to the constructor of Pojo:

import java.util.HashMap;
import java.util.Map;
// Math.min selects the smaller of two values
int nItems = Math.min(headings.length, fields.length);
Map<String,String> map = new HashMap<String,String>(nItems);
// Start at the third item
for (int i = 2; i < nItems; i++) {
    map.put(headings[i], fields[i]);
}
Pojo pojo = new Pojo(fields[0], fields[1], map);

You then just need a constructor on Pojo that takes arguments (String name, String mobile, Map<String,String> extraData).

class Pojo {
    String name, mobile;
    Map<String,String> extraData;
    public Pojo(String name, String mobile, Map<String,String> extraData) {
        this.name = name;
        this.mobile = mobile;
        this.extraData = new HashMap<String,String>(extraData);
    }
    // getters/setters....
}

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