update,

_resources/it114105/itp3914/Lab12/Ex3/Ex3.java

@@ -0,0 +1,15 @@
+public class Ex3 {
+	public static void main(String [] args) {
+		Student s1=new Student("Ben", 123, 2);
+		System.out.println(s1);
+ 
+		Student s2=new Student("John", 246, 6);
+		System.out.println(s2);
+ 
+		Student os1=new OutstandingStudent("Mary", 456, 3, "academic");
+		System.out.println(os1);
+ 
+		Student os2=new OutstandingStudent("Peter", 567, 7, "sports");
+		System.out.println(os2);
+	}
+}

_resources/it114105/itp3914/Lab12/Ex3/OutstandingStudent.java

@@ -0,0 +1,11 @@
+public class OutstandingStudent extends Student{
+    String award;
+    OutstandingStudent(String name, int stid, int year, String award){
+        super(name, stid, year);
+        this.award = award;
+    }
+    @Override
+    public String toString() {
+        return super.toString() + ", Award: " + award;
+    }
+}

_resources/it114105/itp3914/Lab12/Ex3/Student.java

@@ -0,0 +1,24 @@
+public class Student {
+	protected String name;
+	protected int stid;   // student id
+	protected int year;
+ 
+	public Student(String name, int stid, int year) {
+		this.name = name;
+		this.stid = stid;
+		setYear(year);
+	}
+ 
+	public void setYear(int year) {
+		if (year>0 && year<=3) 
+			this.year = year;
+		else {
+			System.out.println("Wrong input! Year will be set to 1.");
+			this.year = 1;
+		}
+	}
+ 
+	public String toString() {
+		return "Name: "+name+", Student ID: "+stid+", Year: "+year;
+	}
+}