Java – Remove duplicate characters from String
In this article, we will discuss steps and execution program to delete/remove all duplicate characters/occurrences from given String Remove duplicate characters from String: Steps: Create Read More
Category: Java
Java – How to sort LinkedHashMap by its Values ?
In this article, we will discuss how to convert ordered LinkedHashMap into Sorted TreeMap by its Values With the introduction of Java 8 APIs, sorting LinkedHashMap become easy and more Read More
Java – How to sort LinkedHashMap by its Keys ?
In this article, we will discuss how to convert ordered LinkedHashMap into Sorted TreeMap by its Keys With the introduction of Java 8 APIs, sorting LinkedHashMap become easy and more Read More
Java – How to sort LinkedHashSet contents ?
In this article, we will discuss how to sort contents of LinkedHashSet Key points about LinkedList: LinkedHashSet maintains insertion-order It uses doubly-linked list and hash table to store element/objects Different ways to Read More
Java – 5 ways to iterate through TreeMap
In this article, we will discuss various ways to iterate through TreeMap. We will list down various Map implementation classes and their key property like element/objects storing-order 1. Read More
Java – Iterate through TreeSet in 3 ways
In this article, we will discuss various ways to iterate through TreeSet – 3 ways Various ways to iterate through TreeSet: Enhanced for-loop introduced in Java 1.5 version Iterating Read More
Java – Iterate through LinkedList in 5 ways
In this article, we will discuss various ways to iterate through LinkedList – 5 ways Various ways to iterate through LinkedList Regular for-loop Enhanced for-loop introduced Read More
Java – How to find duplicate in String[] Arrays ?
In this article, we will see how to find duplicate in String[] Arrays Finding duplicates in String[] Arrays : Check duplicates present or not ? Read More
Java – Difference between throws-clause and try-catch-finally blocks ?
In this article, we will discuss differences between throws-clause and try-catch-finally block in Java 1. Java Exception handling: There are 5 keywords related to Exception Handling; Read More
Java – Interview program on static method
In this article, we will see sample program involving static method Q) What will be output of following program ? Output: Explanation: We are invoking Read More
Java – Interview program on String using null
In this article, we will discuss a sample program on String which is commonly asked to test skill on String Q) What will be output Read More
Java – How to sort Vector using Collections.sort() method ?
In this article, we will list down steps to sort Vector 1. Vector: Vector is implementation class of List interface (i.e.; Vector implements List) Vector uses resizable array Read More
Java – Sorting Collection of String, StringBuffer and StringBuilder
In this article, we will discuss how to sort collection of, String StringBuffer StringBuilder In Collection framework hierarchy, below classes sorts value/objects stored by-default in Read More
OOPs Principle in Java
In this article, we will discuss OOPs Principle with respect to Java Programming Language. OOPs which stands for Object-Oriented Programming defines different principle approaches which Read More
Java – Serialization interview question and answers
In this article, we will cover some of the interview questions with their justification on Serialization concept in Java These are most frequently asked interview Read More
Java 5 – ArrayList v/s Generic ArrayList
In this article, we will discuss the difference between non-generics & generics versions of ArrayList i.e.; ArrayList v/s ArrayList<T> 1. ArrayList v/s ArrayList<T>: ArrayList ArrayList<T> Read More
Java 5 – Generics interview question and answers
In this article, we will cover some of the interview questions with their justification on Generics concepts introduced in Java 1.5 version These are most Read More
Java 5 – Wildcard arguments in Generics
In this article, we will discuss wildcard arguments in Generics introduced in Java 1.5 version 1. Wildcard arguments: Question mark (?) is known as wildcard Read More
Java 5 – Generics methods
In this article, we will discuss how to create Generics methods and why it is needed and also rules while defining Generics methods Already in Read More
Java 5 – Bounded Types in Generics
In the previous article, we have discussed on Generics class which helps to instantiate with only particular type-parameter and this way Generics classes provides type-safety Read More