Create MyQueueLinked.java

MyQueueLinked.java

@@ -0,0 +1,57 @@
+package my.exercises.shortjob;
+
+public class MyQueueLinked {
+
+    private Node head;
+    public Node tail;
+    private int count;
+
+    public boolean isFull(){return false;}
+    public boolean isEmpty(){return count == 0;}
+
+    public boolean enqueue(Object item){
+        Node node = new Node(item);
+
+        if(isEmpty())
+            head  = node;
+        else
+            tail.setNext(node);
+        tail= node;
+        count++;
+        return true;
+    }
+    public Object peek(){return !isEmpty() ? head.getItem() : null;}
+    public Object dequeue(){
+
+        Object item = peek();
+        if(item != null){
+            head = head.getNext();
+            count--;
+        }
+        return item;
+    }
+    public void clear(){
+        for(; !isEmpty(); dequeue());
+    }
+    public int size(){return count;}
+    public String toString(){
+        StringBuffer sb = new StringBuffer();
+
+        for(Node node = head; node!= null; node= node.getNext()){
+            sb.append(node.getItem());
+        }
+
+
+        return sb.toString();
+    }
+    public static void main(String... args){
+        MyQueueLinked q = new MyQueueLinked();
+
+        q.enqueue(1);
+        q.enqueue(2);
+        q.enqueue(5);
+        q.enqueue(7);
+        System.out.println(q.dequeue());
+        System.out.print(q);
+    }
+}