Circular references during serialization in Java can cause StackOverflowError or OutOfMemoryError exceptions. This happens because a circular reference creates a loop in the object graph that the serialization process tries…
In this post, we will see questions asked on String during java interview 1. Explain String pool in java? String Pool is java string literals pool that JVM maintains a…
Lambda expressions are a concise way of representing anonymous functions in Java 8 and later. A lambda is an anonymous function They can be used to pass behavior as a…
In this post, we will learn on java8 method referenced exampls: Method references in Java 8 are compact, easy-to-read lambda expressions which will refer to an existing method. They can…
In this tutorial, we will learn about using comparators with Lamda. Comparators are extensively used in collections to sort objects link users, employees, orders etc. In Java 8, comparators can…
Comparable and Comparator are two Java interfaces that allow objects to be compared and sorted. Comparable Comparable is a functional interface that is implemented by a class to define its…
In this post, we will see the java is pure functional programming language or not. Java is not a purely functional programming language support functional programming concepts with help of…
Problem: Given array of size ‘n’ and left rotate k times Input : [1,2,3,4,5,6,7], K=3 Left Rotate 1: 2,3,4,5,6,7,1 Left Rotate 2: 3,4,5,6,7,1,2 Left Rotate 3: 4,5,6,7,1,2,3 Solution: Reverse the…
Problem : Given of size ‘n’ and a values ‘k’ around which we need to right rotate the array. Array: [1,2,3,4,5,6,7], K = 3 Rorate1: 7,1,2,3,4,5,6 Rotate2: 6,7,1,2,3,4,5 Rotate3: 5,6,7,1,2,3,4 Solution…
In this post, we will see Valid Parenthesis with stack. This solution uses a counter to keep track of the balance of parentheses. Whenever an opening parenthesis is encountered, the…