update,

it114105/itp3914/Lab12/Ex2/Employee.java

@@ -0,0 +1,17 @@
+public class Employee {
+	public static final int MIN_ID = 1000;
+	protected String name;
+	protected int employeeID;
+ 
+	public Employee(String n, int id) {
+		name = n;
+		if (id < MIN_ID) 
+			employeeID = 0;
+		else
+			employeeID = id;
+	}
+ 
+	public String toString() {
+		return "Name: " + name + ", ID: " + employeeID;
+	}
+}

it114105/itp3914/Lab12/Ex2/Ex2.java

@@ -0,0 +1,9 @@
+public class Ex2 {
+	public static void main(String [] args) {
+		Employee emp = new Employee("John", 31520);
+		FTEmployee ftemp = new FTEmployee("Mary", 42680, 15000.5);
+ 
+		System.out.println(emp);
+		System.out.println(ftemp);
+	}
+}

it114105/itp3914/Lab12/Ex2/FTEmployee.java

@@ -0,0 +1,11 @@
+public class FTEmployee extends Employee {
+    double salary;
+    FTEmployee(String name, int employeeID, double salary){
+        super(name, employeeID);
+        this.salary = salary;
+    }
+
+    public String toString(){
+        return super.toString() + ", Salary: " + salary;
+    }
+}