Smallest missing number is the smallest number which is missing from a stream of elements or in an Array. The stream may or may not be contain continuous elements. If the stream is continuous then the smallest missing number is nothing but the Lost Number in a stream. In this ... Read More

Lost Number is the number which is missing from a continuous stream of elements or in an Array. In this section, we will discuss the various approaches to find a lost number in a stream of elements using java programming language. Example for a lost number in an array ... Read More

Exceptions are the unusual events which disrupts the normal flow of execution of a program. When an exception occurs an object called exception object is generated, which contains details of exception like name, description, state of program. In this section, we are going to write a java program to handle ... Read More

A TreeMap is a class provided by Java that implements Map Interface. It is a collection of key-value pairs and the key-value pairs in TreeMap are stored in sorted Order based on key values. An Entry is defined as a key-value pair in a TreeMap. In this article, we will ... Read More

TreeSet is a class that implements Set interface in Java. In a tree set the elements are stored in sorted order as it is implemented internally using a sorted balanced tree called as binary search tree. The elements in the TreeSet are stored in ascending order by default. Union of ... Read More

Size of a file is the amount of storage space occupied by that particular file on a particular storage device such as a hard drive. Size of a file is measured in terms of bytes. In this section, we will be discussing how to implement a java program to get ... Read More

LinkedHashSet is a class provided by Java that implements Set Interface. The first element of a LinkedhashSet is nothing but the first element in the collection. In this article, we will discuss different approaches to get the first element from LinkedHashset. What is a LinkedHashSet? A LinkedHashSet is a ... Read More

Motherboard Serial Number is an id assigned to the motherboard of a computer. It is used to generally used to track the computer system and also to identify when the system is lost or stolen. In this section, we will be discussing different approaches to find the Motherboard Serial Number ... Read More

Computers can connect to a network and communicate with other devices using a hardware or software component known as Network Interface Controller(NIC). NIC helps in creating a layer which helps in transmitting and receiving data between two devices.MAC address known as Media Access Control address is a unique identifier of ... Read More

In Java, HashSet is a class which implements Set Interface. HashSet is a collection of unique elements which doesn’t store or allow us to store duplicate elements. In this section, we will be discussing about different approaches in java to find the first element and last element of a hashSet ... Read More