Aishwarya Naglot has Published 180 Articles

Can a constructor be made final in Java?

Aishwarya Naglot

Aishwarya Naglot

Updated on 29-Jul-2025 16:21:25

7K+ Views

A constructor is a special method in Java that is used to initialize objects. It gets called when an instance of a class is created. The constructor has the same name as the class and does not have a return type. The question is whether a constructor can be declared ... Read More

How to iterate over a TreeMap in Java?

Aishwarya Naglot

Aishwarya Naglot

Updated on 28-Jul-2025 18:51:44

3K+ Views

TreeMap is based on the Red-Black tree structure, which is a It is a part of the Java Collections Framework. It is a sorted map and maintains the order of its keys. Its order depends on the natural ordering of the keys or by a Comparator.Since the TreeMap is not ... Read More

How to iterate HashSet in Java?

Aishwarya Naglot

Aishwarya Naglot

Updated on 28-Jul-2025 16:09:59

3K+ Views

The HashSet class is a part of the Java Collections Framework, and it implements the Set interface. It is a collection of unique individual elements. It internally uses a hash table; therefore, the iteration order of elements is not guaranteed. Our task is to iterate through the elements of a HashSet ... Read More

Iterate through ArrayList in Java

Aishwarya Naglot

Aishwarya Naglot

Updated on 28-Jul-2025 15:18:30

7K+ Views

ArrayList is a part of the Java Collections Framework. It is used to store elements in a dynamic array that can grow as needed. Unlike arrays, ArrayLists can change their size dynamically, which makes them easier for storing collections of objects without fixing the size at the time of creation. ... Read More

Iterate through elements of Java LinkedHashSet

Aishwarya Naglot

Aishwarya Naglot

Updated on 28-Jul-2025 14:58:13

418 Views

LinkedHashSet is a part of Java's Collection Framework. It is a type of Set that keeps the order of elements the same as they were added. It uses a combination of a hash table and a linked list to store elements.Our task is to traverse/iterate through the elements of a ... Read More

Check if a Java HashSet Collection contains another Collection

Aishwarya Naglot

Aishwarya Naglot

Updated on 28-Jul-2025 14:40:17

1K+ Views

HashSet is a class in Java that implements the Set interface. It is used for storing unique elements. Our task is to check if a HashSet contains another collection in Java. Let's look at some scenarios to understand the problem better: Scenario 1 Input: {1, 2, 3, 4, 5} Collection ... Read More

Check if a particular value exists in Java LinkedHashMap

Aishwarya Naglot

Aishwarya Naglot

Updated on 28-Jul-2025 14:20:51

570 Views

LinkedHashMap is a class in Java that implements the Map interface. It uses a doubly linked list to maintain the insertion order of elements. So, when we loop through a LinkedHashMap, the elements will be returned in the order we had inserted them. The given task is to check if ... Read More

Check if a particular key exists in Java LinkedHashMap

Aishwarya Naglot

Aishwarya Naglot

Updated on 25-Jul-2025 15:49:50

618 Views

LinkedHashMap is a data structure in Java that is part of the Java Collections Framework. It is very similar to HashMap.It stores key-value pairs, where each key is unique, and it allows null values, but allows only one null key. The main difference is that the LinkedHashMap returns the elements ... Read More

Check if a particular value exists in Java TreeSet

Aishwarya Naglot

Aishwarya Naglot

Updated on 24-Jul-2025 18:33:24

730 Views

TreeSet is a class in Java that implements the Set interface. It stores unique values in a sorted order. It is similar to HashSet, but the difference is that TreeSet stores elements in a sorted manner, while HashSet does not guarantee any order. Our task is to check if a ... Read More

Add all the elements from a collection to the HashSet in Java

Aishwarya Naglot

Aishwarya Naglot

Updated on 21-Jul-2025 15:24:12

532 Views

HashSet in Java implements the Set interface, which belongs to the Java Collections Framework and is a part of the java.util package. It stores unique elements, which means we cannot store any duplicate (appearing more than once) values in a HashSet. The given task is to add all the elements ... Read More

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