A linked list is a sequential-access data structure used for storing ordered elements. They prioritize quick and easy data insertion and deletion over item lookup. All linked lists are collections of node data structures that are connected by pointers – that’s where the “link” in “linked
Category: Java
Common Techniques: Advanced Interview Essentials
There are some common approaches to problems that, when you use them, can dramatically improve your programs. These techniques are more advanced, because it takes practice to be able to identify problems where these approaches work well. Two tricky approaches
Search Table Row from a Pdf file and Display Result at Desktop App
We have a pdf file. There is course exam routine displaying in the table. Our task is to search the entire pdf file according to course number and display entire row of the table at desktop application. Pdf file is
How to find duplicate number in Integer array in Java?
[code lang=”java”] public class DuplicateInArray { public static void main(String[] args) { System.out.println(isDuplicate(new int[]{2, 16, 9, 2, 6})); } public static boolean isDuplicate(int[] nums) { boolean status = false; Arrays.sort(nums); int i = 0; while (i < nums.length – 1)
How to find the missing number in integer array of a given range?
Check Out the example bellow: [code lang=”java”] public class MissingNumber { public static void main(String args[]) { System.out.println(Arrays.toString(getMissingNumber(new int[]{1, 2, 3, 9, 8, 11, 15, 14, 20}, 20))); } /** * * @param numbers * @param count * @return *
Java Swing Application Packaging as windows (.exe) installable file.
This video will teach you how to convert your java swing jar file to installable windows (.exe) file very simply. And after making exe file, you can install your java swing application as windows desktop application.
How to set common Menu for all JFrames and Browse Pages?
Step-1: Create 4 JFrames and those are JFrameMain, JFrameOne, JFrameTwo, JFrameThree Step-2: We shall create a ‘CommonMenu’ class and there we shall make a method ‘displayMenu’ package com.coderbd.swing; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JFrame; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem;
Java 2D and 3D Array
In Java, it is also possible to create an array of arrays known as multidimensional array. For example, we can declare and initialize a 2D array like bellow: int[][] twoDArray = new int[3][4]; In above example, there is 3 Rows