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Browse CoursesArrays in java import java.util.*; class ASC { public static void main(String args[]) { ArrayList<String> slist=new ArrayList<String>(); slist.add(“honey”);//0 slist.add(“joes”);//1 System.out.println(slist.indexOf(“joes”)); ArrayList<String> slist2=new ArrayList<String>(); slist2.addAll(slist); System.out.println(slist); System.out.println(slist2); }}
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 […]
Here’s a simple Java program that converts a given integer into its word representation, printing each digit’s corresponding English word in the same order. ✅ Java Program: Convert Number to Words import java.util.Scanner; public class NumberToWords { // Array to store words for digits 0-9 static String[] digitWords = { “zero”, “one”, “two”, […]
Here’s a simple Java program that takes a sentence as input and prints the number of letters in each word: ✅ Java Program: Count Letters in Each Word import java.util.Scanner; public class WordLengthCounter { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); // Input sentence System.out.print(“Enter a […]
The function accepts two positive integers ‘r’ and ‘unit’ and a positive integer array ‘arr’ of size ‘n’ as its argument,’r’ represents the number of rats present in an area,’unit’ is the amount of food each rat consumes and each ith elements of an array ‘arr’ represents the amount of food present in ‘i+1’ house […]
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) […]
)Open/Closed Principle(OCP) Software entities should be open for extension but closed for modification. This allows adding new function without altering existing code. class AreaCalculator { public double calculateArea(String shape,double radius,double length,double breadth) { if(shape.equals(“circle”)) { return Math.PI*radius*radius; } else if(shape.equals(“rectangle”)) { return length*breadth; } } class OCPviolation { public static void main(String args[]) […]
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 […]
Remove the specific number from the given input i/p:1200 number to remove:2 output: 100 class Remove { public static void main(String args[]) { int n=1200,r=2,a,s=0,b=1; while(n!=0)//1 { a=n%10;//a=1 if(a!=r)//1!=2(t) { s=s+b*a;//0+100*1–>s=100 b=b*10;//b=1000 } n=n/10;//0 } System.out.println(s);//100 } } ✅ Java Program: Remove a Specific Digit from Input import java.util.Scanner; […]
✅ Java Program: Count Vowels and Numbers import java.util.Scanner; public class VowelAndNumberCounter { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); // Take input from the user System.out.print(“Enter a string: “); String input = scanner.nextLine(); // Initialize counters int vowelCount = 0; int numberCount = 0; // […]
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