Java provides several built-in methods for sorting lists, each utilizing different sorting algorithms. For example, theCollections.sort()method uses a variant ofthe MergeSort algorithm, which is efficient but can be overkill for small lists. On the other hand, theArrays.sort()method uses a vari...
Many times we encounter decision constructs which end up doing the similar operation in each branch. This provides an opportunity to extract a factory method which returns an object of a given type and performs the operation based on the concrete object behavior. For our example, let’s define ...
Java Predicate is a functional interface as part of the java.util.function package which acts as a general predicate assigned as a target to the lambda expression for referencing any method or evaluating any Boolean based function with the Boolean values of true or false being assigned as a tar...
but let’s design an alternate way of delegating the logic to the enum itself. we’ll define methods for each of the enum values and do the calculation
There are three ways to stop method overriding in Java inheritance. Final, static, and private methods cannot be overridden by a subclass.
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Method and Field objects. All of these have a getAnnotation() method which returns the annotation object. We need to cast this object as our custom annotation (after checking with instanceOf()) and then we can call methods defined in our custom annotation. Let’s look at the sample code,...
* @param n = How many top elements you want to print? If n=1 it will print the highest occurrence word. If n=2 it * will print top 2 highest occurrence words. * @returns list of String */ public static List<String> crunchifyFindMaxOccurrence(Map<String, Integer> map, int n) {...
This tutorial introduces how to call a method of another class in Java. ADVERTISEMENT In Java, a class can have many methods, and while creating applications, we can call these methods into the same class and another class. There can be several scenarios where a method can be called in ano...
We have multiple methods in the Node<T> class that we can use to perform operations like the getRoot() method that returns the root, the isRoot() function checks if the current node is a root. We create a getLevel() function that returns the level of the node in the tree. At last...