Category: Core Java Coding Questions

Core Java Coding Questions

Can you write java program for prime number 1to 50 and skip printing 30 and 40 numbers

May 28, 2023May 28, 2023 admin

package BasicCoreJavaExamples;import java.util.Scanner;public class PrintPrimeNumbers { public static void main(String[] args) { Scanner src = new Scanner(System.in); System.out.println(“Enter prime number till to :”); int lastNum = src.nextInt(); int count = 0; if (lastNum == 0 || lastNum == 1) { System.out.println(“The given numbers are nor prime number.”); } for (int i = 2; i <=…

Core Java Coding Questions, Selenium

Create a Java program to store the Name and Salary of employees

May 12, 2023May 25, 2023 admin

//Create a Java program to store the Name and Salary of employees //Name = [‘Ram’,’Rahim’,’Sid’,’Tom’] //Salary = [30000,20000,35000,23000] // //1. Add a new employee to the dictionary with name as ‘Shankar’ and salary as 15000 //2. Update the salary of tom to 25000 //3. List the names of employees who earn more than 20000 package…

Core Java Coding Questions

String Char Counts Using Collections

May 10, 2023May 10, 2023 admin

String Char Counts Using Collections: package InterViewQuestions;import java.util.HashMap;import java.util.Map;public class StringCharCountsUsingCollections { //string = hemchandrraBhatt //print number chars repeated public static void main(String[] args) { String str = “hemchandrabhatt”; HashMap<Character, Integer> mapCharCount = new HashMap<>(); char[] charArr = str.toCharArray(); for (char c : charArr) { if (mapCharCount.containsKey(c)) { mapCharCount.put(c, mapCharCount.get(c) + 1); } else {…

Core Java Coding Questions

Remove Duplicates From Int Array

May 8, 2023May 8, 2023 admin

There are many ways to remove duplicate items A) Using for Loop package InterViewQuestions; public class RemoveDuplicatesFromArray { public static void main(String[] args) { Integer[] integer_Array = {50, 50, 100, 100, 99, 99, 9, 9, 100, 100}; int [] temp = new int[integer_Array.length]; for(int i =0; i< integer_Array.length; i++){ for(int j = i+1; j <…

Core Java Coding Questions, Java Basic Interview Questions(company wise)