SOLID changes

.gitignore

@@ -0,0 +1,19 @@
+# intellij stuff
+.idea
+*.iml
+
+# eclipse stuff
+.project
+.settings
+.classpath
+.checkstyle
+.factorypath
+.fbExcludeFilterFile
+.pmd
+.pmdruleset.xml
+
+# build stuff
+*.bak
+target
+.DS_Store
+.class

src/oops/SOLID/lsp/stack/before/StackWrong.java

@@ -14,19 +14,20 @@
  * so objects of ArrayList are not fully replaceable by the objects of stack.   
  * 
  */
-public class StackWrong extends ArrayList<Integer>{
+public class StackWrong {
+	ArrayList<Integer> list = new ArrayList<>();
 	private int topPointer = 0;
 
 	public void push(Integer a) {
-		add(topPointer, a);
+		list.add(topPointer, a);
 		topPointer++;
 	}	
 	public void pop() {
-		remove(topPointer-1);
+		list.remove(topPointer-1);
 		topPointer--;
 	}
 	public Integer top() {
-		return get(topPointer-1);
+		return list.get(topPointer-1);
 	}
 
 	public static void main(String[] args) {
@@ -36,7 +37,6 @@ public static void main(String[] args) {
 		System.out.println(st.top());
 		st.pop();
 		System.out.println(st.top());
-		st.clear();
 		System.out.println(st.top());
 	}
 }

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

@@ -22,6 +22,15 @@ public Employee(String fullName, int monthlyIncome){
         this.lastName = names[1];
     }
 
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+
     public String getEmail() {
         return this.firstName + "." +
                 this.lastName +
@@ -63,32 +72,4 @@ public String getFullName(){
         return this.firstName + " " + this.lastName;
     }
 
-    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());
-
-            Path path = Paths.get(employee.getFullName()
-                    .replace(" ","_") + ".rec");
-            Files.write(path, sb.toString().getBytes());
-
-            System.out.println("Saved employee " + employee.toString());
-        } catch (IOException e){
-            System.out.println("ERROR: Could not save employee. " + e);
-        }
-    }
 }

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

@@ -1,5 +1,9 @@
 package oops.SOLID.singleResponsibilityPrinciple.before;
 
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.Arrays;
 import java.util.List;
 
@@ -16,4 +20,33 @@ public List<Employee> findAll(){
 
         return Arrays.asList(anna, billy, steve, magda);
     }
+
+    public void save(Employee employee){
+        try {
+            StringBuilder sb = new StringBuilder();
+            sb.append("### EMPLOYEE RECORD ####");
+            sb.append(System.lineSeparator());
+            sb.append("NAME: ");
+            sb.append(employee.getFirstName() + " " + employee.getLastName());
+            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());
+
+            Path path = Paths.get(employee.getFullName()
+                    .replace(" ","_") + ".rec");
+            Files.write(path, sb.toString().getBytes());
+
+            System.out.println("Saved employee " + employee.toString());
+        } catch (IOException e){
+            System.out.println("ERROR: Could not save employee. " + e);
+        }
+    }
+
 }

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

@@ -10,7 +10,7 @@ public static void main(String[] args) {
 
         // Save all
         for (Employee e : employees){
-            e.save();
+            repository.save(e);
         }
     }
 }