Example

package review;

import java.util.Arrays;
import java.util.Date;
import java.util.List;

public class Assessment {

	public static int PATIENT_ID = 0;
	public static int SSN_COLUMN = 0;
	public static int i = 1;
	public static String[][] dataToImport = new String[2][2];
	static {
	dataToImport[0][0] = "A";
	dataToImport[0][1] = "B";
	dataToImport[1][0] = "C";
	dataToImport[1][1] = "D";
	}
	
	public static void main(String[] args) {
		doStuff();
		doStuff2();
	}
	
	//Question
	static void doStuff() {
	    String data = dataToImport[i][PATIENT_ID] + dataToImport[i][SSN_COLUMN];
	    String patientHash = "" + data.hashCode();
	    System.out.println(patientHash); //outputs: 2144
	}
	
	static void doStuff2() {
	    String patientID = dataToImport[i][PATIENT_ID];
	    String SSN = dataToImport[i][SSN_COLUMN];
	    String patientHash = createHash(patientID, SSN);
	    System.out.println(patientHash); //outputs: C67
	}

	static String createHash(String patientID, String SSN) {
	    return patientID + SSN.hashCode();
	}

}