Category: Java Programs
Difference Between Queue and Stack in Java
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Criteria Queue Stack Data Structure Type FIFO (First-In-First-Out) LIFO (Last-In-First-Out) Primary Operations offer (or add), poll (or remove), peek push,...
Read MoreJava ConcurrentHashMap CRUD Operations Example
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ConcurrentHashMap is a part of the Java Collections Framework designed for concurrent use by multiple threads. It provides thread-safety without...
Read MoreJava TreeMap CRUD Operations Example
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A TreeMap is a part of the Java Collections Framework and extends the AbstractMap class. It is a Red-Black tree-based...
Read MoreJava LinkedHashMap CRUD Operations Example
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LinkedHashMap is a subclass of HashMap that maintains a doubly-linked list running through all its entries. This ensures the order...
Read MoreJava HashMap CRUD Operations Example
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HashMap is a part of the Java Collections Framework and is found in the java.util package. It is a data...
Read MoreJava TreeSet CRUD Operations Example
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TreeSet is an implementation of the SortedSet interface in Java, which uses a Red-Black tree as its backend. It ensures...
Read MoreJava LinkedHashSet CRUD Operations Example
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LinkedHashSet is a part of the Java Collections Framework and resides in the java.util package. It's an ordered version of...
Read MoreJava HashSet CRUD Operations Example
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HashSet is a part of Java's collection framework and is present in the java.util package. It implements the Set interface...
Read MoreJava LinkedList CRUD Operations Example
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LinkedList is a part of the collection framework in Java and resides in the java.util package. Unlike ArrayList, the LinkedList...
Read MoreJava ArrayList CRUD Operations Example
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In Java, ArrayList is a part of the collection framework and resides in the java.util package. It provides dynamic arrays...
Read MoreHow to Sort Custom Objects in Java 8
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Java 8 introduced a plethora of new features and enhancements, particularly in the area of collections and stream processing. Among...
Read MoreJava Comparator Handling Null Values
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In Java, when sorting collections using a Comparator, handling null values can be tricky. By default, using a comparator on...
Read MoreJava Comparator Sorting by Multiple Fields
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In Java, the Comparator interface is used tool for defining custom orderings for collections of objects. Sometimes, we need to...
Read MoreJava Comparator in Reverse Order
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Often in programming, there is a need to sort collections in reverse order. Java provides the Comparator interface, which is...
Read MoreJava Lambda Comparator with Multiple Fields
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In many real-world scenarios, sorting data based on a single field might not suffice. There might be a need to...
Read MoreJava Comparator with Lambda Expressions
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The Comparator interface is a powerful tool in Java to define custom orderings for collections of objects, especially when you...
Read MoreJava Comparator with Lambda to Sort in Descending Order
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With the introduction of Java 8, lambdas brought a more concise and expressive way to implement interfaces with a single...
Read MoreJava Comparator in Ascending Order
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In Java, the Comparator interface provides a powerful mechanism to define custom ordering for collections of objects. Often, we need...
Read MoreJava Comparator in Descending Order
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In Java, the Comparator interface is used to order the objects of user-defined classes. If you want to order objects...
Read MoreDelete Middle Element From Stack in Java
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In many applications, there might arise a need to modify the content of a stack. One such modification can be...
Read MoreReverse an Array Using Stack in Java
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Reversing an array is a fundamental problem in computer science. While there are several methods to reverse an array, using...
Read MoreReverse a String Using Stack in Java
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Reversing a string is one of the classical problems in the field of computer science. One of the most efficient...
Read MoreConvert Singly Linked List Into Circular Linked List in Java
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A singly linked list is a type of data structure where each node points to the next node in the...
Read MoreDeletion in Linked List in Java
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Deletion is one of the primary operations in a linked list, allowing us to remove a node based on its...
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