diff --git a/keyboard/Marks.java b/keyboard/Marks.java
new file mode 100644
index 0000000..aa088a2
--- /dev/null
+++ b/keyboard/Marks.java
@@ -0,0 +1,111 @@
+/**
+ * Write a program in Java called Marks, which prompts user for the number of marks, 
+ * reads it from the keyboard, and saves it in an int variable called numOfMarks. 
+ * It then prompts user for the marks and saves them in an int array called marks. 
+ * 
+ * Program shall check that the marks value is between 0 and 100 and 
+ * the number of marks is between 1 to 30. The program should display number of marks
+ * that are more than 50.
+ * 
+ *  An example of output is shown below:
+ * 
+ *     Enter the number of marks: 2
+ *     Enter marks 1: 112
+ *     Invalid marks.. try again...
+ *     Enter marks 1: 49
+ *     Enter marks 2: 60
+ *     Number of marks more than 50 is 1
+ * 
+ * Note: This program can be written in a structured way.
+ */
+
+import java.util.Scanner;
+
+public class Marks {
+
+    private static final int MAX_NUM_OF_MARKS =  30;
+    private static final int LO_MARK_VALUE    =   0;
+    private static final int HI_MARK_VALUE    = 100;
+    private static final int BOUND_MARK_VALUE =  50;
+
+    private static Scanner in = new Scanner(System.in);
+
+    /**
+     * Endpoint.
+     * 
+     * @param  args  input params
+     */
+    public static void main(String[] args)
+    {
+        int numOfMarks = readNumOfMarks();
+        if (numOfMarks == 0) {
+            System.out.println("Program is terminated. Bye...");
+            System.exit(0);
+        }
+
+        int numOverBoundMarks = 0;
+        int[] marks = new int[numOfMarks];
+        for (int i = 0; i < numOfMarks; i++) {
+            marks[i] = readMark( (i+1) );
+            numOverBoundMarks += (marks[i] > BOUND_MARK_VALUE) ? 1 : 0; 
+        }
+
+        System.out.println("Number of marks more than 50 is " + numOverBoundMarks);
+    }
+
+    /**
+     * Read mark.
+     * 
+     * @param  markIdx  index of mark
+     * @return          marks value
+     */
+    private static int readMark(int markIdx)
+    {
+        int mark = -1;
+        do {
+            mark = readInt(String.format("Enter marks %d: ", markIdx));
+            if ( mark >= LO_MARK_VALUE && mark <= HI_MARK_VALUE ) {
+                break;
+            }
+            System.out.println("Invalid marks.. try again... ");
+        }
+        while (true);
+
+        return mark;
+    }
+
+    /**
+     * Read number of marks.
+     * 
+     * @return number of marks.
+     */
+    private static int readNumOfMarks()
+    {
+        int num      = 0;
+        int attempts = 0;
+        while (true) 
+        {
+            num = readInt("Enter the number of marks: ");
+            attempts++;
+
+            if ( (num > MAX_NUM_OF_MARKS) && (attempts < 3) ) {
+                System.out.println("Invalid number of marks.. try again... remaining attempts: "+(3-attempts));
+                continue;
+            }
+            break;
+        }
+        return num;
+    }
+
+    /**
+     * Read int value from keyboard.
+     * 
+     * @param  inputMessage  Welcome message
+     * @return               int value 
+     */
+    private static int readInt(String inputMessage) {
+        System.out.print(inputMessage);
+        return in.nextInt();
+    }
+
+}
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