Fixing a bug in the doublyLinkedList.

fourthassignment/src/main/java/com/ds/fourthassignment/DoublyLinkedList.java

@@ -45,12 +45,12 @@ public class DoublyLinkedList {
 	}
 	
 	
-	public boolean remove(String query){
+	public boolean remove(Scientist query){
 		boolean flag=false; 
 		if(size==0) return flag; 
 		DoublyLNode current = head;
 		do{
-			if(current.getData().equals(query)){
+			if(current.getData().compareTo(query) == 0){
 				//remove current
 				DoublyLNode prev = current.getPrevious(); 
 				DoublyLNode next =current.getNext(); 

fourthassignment/src/test/java/com/ds/fourthassignment/Test_DoublyLinkedList.java

@@ -4,13 +4,13 @@ public class Test_DoublyLinkedList {
 
 	public static void main(String[] args){
 		DoublyLinkedList dlist = new DoublyLinkedList(); 
-		dlist.addToHead(new DoublyLNode("1", null, null));
-		dlist.addToHead(new DoublyLNode("2", null, null));
-		dlist.addToHead(new DoublyLNode("3", null, null));
-		dlist.addToHead(new DoublyLNode("4", null, null));
+		dlist.addToHead(new DoublyLNode(new Scientist("A"), null, null));
+		dlist.addToHead(new DoublyLNode(new Scientist("B"), null, null));
+		dlist.addToHead(new DoublyLNode(new Scientist("D"), null, null));
+		dlist.addToHead(new DoublyLNode(new Scientist("J"), null, null));
 		
 		System.out.println(dlist.display());
-		dlist.remove("3"); 
+		dlist.remove(new Scientist("B")); 
 		System.out.println(dlist.display());
 	}
 }
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