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Browse Coursesimport java.util.*; class ASC { public static void main(String args[]) { HashSet<String> h=new HashSet<String>(); h.add(“Ram”); h.add(“Abi”); h.add(“Priya”); h.add(“John”); h.add(“Abi”); System.out.println(h); } }
Question: Create an Arraylist by adding elements Apple,banana,mango First element:Apple Second element:banana Third element:mango sort the list reverse the list ——————————- import java.util.*; class ASC { public static void main(String args[]) { ArrayList<String> fruits=new ArrayList<String>(); fruits.add(“Apple”); fruits.add(“Banana”); fruits.add(“Mango”); System.out.println(“First element:”+fruits.get(0)); System.out.println(“second element:”+fruits.get(1)); System.out.println(“Third element:”+fruits.get(2)); Collections.sort(fruits); System.out.println(“Sorted list:”+fruits); Collections.reverse(fruits); […]
Collection framework: A Java collection framework provides an architecture to store and manipulate a group of elements or objects –>It “Provides an architecture” – means it gives a well-structured set of classes and interfaces. –>”To store, retrieve, and manipulate” – covers the basic operations like adding, removing, searching, sorting, etc. –>”Group […]
What is an Anagram? An anagram is a word or phrase formed by rearranging the letters of another word or phrase, using all the original letters exactly once. ✅ Example of Anagrams: “listen” → “silent” “race” → “care” “evil” → “vile” “a gentleman” → “elegant man” (ignoring spaces and case) […]
Solid Principles: Solid Principle is an acronym for five design principles that help in creating more maintainable, flexible and scalable software. These Five principles were introduced by Robert C. Martin 1) Single Responsibility Principle(SRP): A class should have only one reason to change, meaning it should have only one job or responsibility […]
Encapsulation:[Bundling of fields[variables] and method inside a single class] adv: It prevents outer classes from accessing and changing the fields of a class getter & setter methods in java[POJO class]==>plain old java objects gettermethod–>there must be a returntype other than void class Bank { private int minimumbalance=2500; public int getminimumBalance()//getter […]
Abstraction: Data Abstraction is the process of hiding certain details and showing only the essential information to the user Abstraction can be achieved either with abstract class or interface in java Program abstract class Student { abstract void paperarrear();//abstract method void colgatn()//non abstract method { System.out.println(“He will atn the cls regularly”); […]
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