Feature/calculator

OOPExamples/Calculator.java

@@ -0,0 +1,14 @@
+public class Calculator {
+    public int add(int a, int b) { 
+        return a + b; 
+    }
+    public int subtract(int a, int b) { 
+        return a - b; 
+    }
+    public int multiply(int a, int b) { 
+        return a * b; 
+    }
+    public int divide(int a, int b) { 
+        return b != 0 ? a / b : 0; 
+    }
+}

OOPExamples/Employee.java

@@ -0,0 +1,33 @@
+public class Employee {
+    private String name;
+    private int age;
+    private int id;
+
+    //constructors
+    public Employee(String name, int age, int id){
+        this.name = name;
+        this.age = age;
+        this.id = id;
+    }
+    //getters
+    public String getName(){ 
+        return name; 
+    }
+    public int getAge(){ 
+        return age; 
+    }
+    public int getIDNo() { 
+        return id; 
+    }
+    //setters
+    public void setName(String name) { 
+        this.name = name; 
+    }
+    public void setAge(int age) { 
+        this.age = age; 
+    }
+    public void setIDNo(int id) { 
+        this.id = id; 
+    }
+}
+