You can use the size() method of java.util.ArrayList to find the length or size of ArrayList in Java. The size() method returns an integ...

There are two ways to remove all elements of an ArrayList in Java, either by using clear() or by using the  removeAll() method.  Both met...

In our earlier articles, we have learned how to loop over ArrayList in Java and you can use the same logic to loop over a TreeSet . You ca...

In the last article, we have learned how to convert a LinkedList to an array in Java , and in today's tutorial, you will learn how to c...

Since LinkedList implements the java.util.List interface, you can sort the LinkedList by using the  Collections.sort() method, just like ...

Hello guys,  Java, as a versatile and widely used programming language, offers a plethora of data structures to developers. One of them is L...

How to convert a List to Set in Java Many times we need to convert one collection to another like converting a List to a Set . It's a...

Difference between ArrayList and HashMap in Java One of the most critical differences between the HashMap and ArrayList class is that the ...

Somebody asked me recently, how do you sort a HashSet? For lists, we use the Collections.sort(List) method, but there is nothing for Set. ...

Sometimes you want to create an ArrayList with values , just like you initialize t at the time of declaration, as shown below: int[] prim...

LinkedList class in java.util package provides the addFirst() method to add an element at the start of the linked list (also known as hea...

Hello guys, when it comes to defining data structures in Java, two primary options are at your disposal: records and classes. Each has its u...

Difference between LinkedHashMap and HashMap in Java HashMap and LinkedHashMap are two of the most commonly used Map implementation in Java...

Difference between TreeSet and TreeMap in Java The main difference between TreeMap and TreeSet is that TreeMap is an implementation of ...

Even though both FileReader and FileInputStream are used to read data from a file in Java, they are quite different. The main difference ...

Read-only Collection in Java You can create read-only Collection by using Collections.unmodifiableCollection() utility method. it retur...

Difference between HashSet and TreeSet in Java There are several differences between a  HashSet and a  TreeSet are similar to what we ...

In the world of web development, interactivity is key to creating engaging user experiences. One fundamental aspect of interactivity is the ...

Hello Java programmers, the main() method in Java is the starting point of any standalone core Java application. JVM starts executing Java ...

Both NoClassDefFoundError and ClassNotFoundException are dangerous errors that come when JVM or ClassLoader not able to locate class ...