Refactored to not violate the SRP principle.

src/oops/SOLID/singleResponsibilityPrinciple/before/Employee.java

@@ -1,94 +1,55 @@
 package oops.SOLID.singleResponsibilityPrinciple.before;
 
-import java.io.IOException;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.nio.file.Paths;
-
-/*
-Models an employee form a business perspective
- */
 public abstract class Employee {
-    private String firstName;
-    private String lastName;
-    private int monthlyIncome;
-    private int nbHoursPerWeek;
-
-    public Employee(String fullName, int monthlyIncome){
-        setMonthlyIncome(monthlyIncome);
-
-        String[] names = fullName.split(" ");
-        this.firstName = names[0];
-        this.lastName = names[1];
-    }
+	private String firstName;
+	private String lastName;
+	private int monthlyIncome;
+	private int nbHoursPerWeek;
 
-    public String getEmail() {
-        return this.firstName + "." +
-                this.lastName +
-                "@globomanticshr.com";
-    }
+	public Employee(String fullName, int monthlyIncome) {
+		setMonthlyIncome(monthlyIncome);
 
-    @Override
-    public String toString() {
-        return this.firstName + " " +
-                this.lastName + " - " +
-                this.monthlyIncome;
-    }
+		String[] names = fullName.split(" ");
+		this.firstName = names[0];
+		this.lastName = names[1];
+	}
 
-    public int getMonthlyIncome() {
-        return monthlyIncome;
-    }
+	public String getEmail() {
+		return this.firstName + "." + this.lastName + "@globomanticshr.com";
+	}
 
-    public void setMonthlyIncome(int monthlyIncome) {
-        if(monthlyIncome < 0){
-            throw new IllegalArgumentException("Income must be positive");
-        }
+	@Override
+	public String toString() {
+		return this.firstName + " " + this.lastName + " - " + this.monthlyIncome;
+	}
 
-        this.monthlyIncome = monthlyIncome;
-    }
+	public int getMonthlyIncome() {
+		return monthlyIncome;
+	}
 
-    public int getNbHoursPerWeek() {
-        return nbHoursPerWeek;
-    }
+	public void setMonthlyIncome(int monthlyIncome) {
+		if (monthlyIncome < 0) {
+			throw new IllegalArgumentException("Income must be positive");
+		}
 
-    public void setNbHoursPerWeek(int nbHoursPerWeek) {
-        if(nbHoursPerWeek <= 0){
-            throw new IllegalArgumentException("Income must be positive");
-        }
+		this.monthlyIncome = monthlyIncome;
+	}
 
-        this.nbHoursPerWeek = nbHoursPerWeek;
-    }
+	public int getNbHoursPerWeek() {
+		return nbHoursPerWeek;
+	}
 
-    public String getFullName(){
-        return this.firstName + " " + this.lastName;
-    }
+	public void setNbHoursPerWeek(int nbHoursPerWeek) {
+		if (nbHoursPerWeek <= 0) {
+			throw new IllegalArgumentException("Income must be positive");
+		}
 
-    public  void save(){
-        try {
-        	Employee employee =this;
-            StringBuilder sb = new StringBuilder();
-            sb.append("### EMPLOYEE RECORD ####");
-            sb.append(System.lineSeparator());
-            sb.append("NAME: ");
-            sb.append(employee.firstName + " " + employee.lastName);
-            sb.append(System.lineSeparator());
-            sb.append("POSITION: ");
-            sb.append(employee.getClass().getTypeName());
-            sb.append(System.lineSeparator());
-            sb.append("EMAIL: ");
-            sb.append(employee.getEmail());
-            sb.append(System.lineSeparator());
-            sb.append("MONTHLY WAGE: ");
-            sb.append(employee.monthlyIncome);
-            sb.append(System.lineSeparator());
+		this.nbHoursPerWeek = nbHoursPerWeek;
+	}
 
-            Path path = Paths.get(employee.getFullName()
-                    .replace(" ","_") + ".rec");
-            Files.write(path, sb.toString().getBytes());
+	public String getFullName() {
+		return this.firstName + " " + this.lastName;
+	}
+
 
-            System.out.println("Saved employee " + employee.toString());
-        } catch (IOException e){
-            System.out.println("ERROR: Could not save employee. " + e);
-        }
-    }
 }

src/oops/SOLID/singleResponsibilityPrinciple/before/PersistData.java

@@ -0,0 +1,6 @@
+package oops.SOLID.singleResponsibilityPrinciple.before;
+
+public interface PersistData {
+
+	void save();
+}

src/oops/SOLID/singleResponsibilityPrinciple/before/PersistEmployeeData.java

@@ -0,0 +1,49 @@
+package oops.SOLID.singleResponsibilityPrinciple.before;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+public class PersistEmployeeData implements PersistData {
+
+	Employee employee;
+
+	public PersistEmployeeData(Employee employee) {
+		this.employee = employee;
+	}
+
+	@Override
+	public void save() {
+		try {
+
+			Path path = Paths.get(this.employee.getFullName().replace(" ", "_") + ".rec");
+			String employeeData = extractEmployeeDataToSave();
+			Files.write(path, employeeData.getBytes());
+			System.out.println("Saved employee " + this.employee.toString());
+
+		} catch (IOException e) {
+			System.out.println("ERROR: Could not save employee. " + e);
+		}
+	}
+
+	public String extractEmployeeDataToSave() {
+		StringBuilder sb = new StringBuilder();
+		sb.append("### EMPLOYEE RECORD ####");
+		sb.append(System.lineSeparator());
+		sb.append("NAME: ");
+		sb.append(employee.getFullName());
+		sb.append(System.lineSeparator());
+		sb.append("POSITION: ");
+		sb.append(employee.getClass().getTypeName());
+		sb.append(System.lineSeparator());
+		sb.append("EMAIL: ");
+		sb.append(employee.getEmail());
+		sb.append(System.lineSeparator());
+		sb.append("MONTHLY WAGE: ");
+		sb.append(employee.getMonthlyIncome());
+		sb.append(System.lineSeparator());
+		return sb.toString();
+	}
+
+}

src/oops/SOLID/singleResponsibilityPrinciple/before/SaveEmployeesMain.java

@@ -4,13 +4,14 @@
 
 public class SaveEmployeesMain {
     public static void main(String[] args) {
-        // Grab employees
+    	
         EmployeeRepository repository = new EmployeeRepository();
         List<Employee> employees = repository.findAll();
 
-        // Save all
+        PersistData persist;
         for (Employee e : employees){
-            e.save();
+            persist = new PersistEmployeeData(e);
+            persist.save();
         }
     }
 }