Code changes to adhere to code best practices

asri71 · asri71 · commit 5ce337fa5437 · 2019-03-05T17:08:54.000+05:30
diff --git a/src/main/java/com/types/Queue.java b/src/main/java/com/types/Queue.java
@@ -1,6 +1,8 @@
 package src.main.java.com.types;
 
 
+import java.util.NoSuchElementException;
+
 /**
  * Interface to provide queue specific functionality to the implementing class
  * This interface only defines the functionality which the queue implementing classes require.
@@ -10,7 +12,7 @@
 public interface Queue<T> extends DataStructure<T> {
 
     //Method to add element
-    public boolean offer(T t);
+    public boolean offer(T t) throws NullPointerException;
 
     //Method to remove element
     public T poll();
@@ -19,7 +21,7 @@ public interface Queue<T> extends DataStructure<T> {
     public T peek();
 
     //Method to check element on head. This throws exception on runtime if the queue is empty
-    public T element();
+    public T element() throws NoSuchElementException;
 
 
 }
