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How to merge pdf in spring boot Java

PDF files in a Spring Boot application, you can use a library like Apache PDFBox or iText. Below is an example using Apache PDFBox to merge PDFs in a Spring…

Java

How to Remove Duplicate Element an Arraylist in Java

How to Remove Duplicate Element an Array-list in Java . To remove duplicate elements from an "ArrayList" in Java, you can use a "Set", which automatically handles duplicates. Here's a…

Java

HashMap and iterate over its entries in java

HashMap and iterate over its entries in java. involves several approaches depending on what you need to accomplish. Here, I'll demonstrate three common methods . HashMap and iterate over its…

Java

Java Three programs to Iterate a Arraylist

Java Three programs to Iterate a Arraylist . Here are three different ways to iterate through an ArrayList in Java, each with a step-by-step explanation: Method 1: Using a for-loop …

Java

Java program to Generate classcast exception

Java program to Generate classcast exception Example 1. class Shoes { // Some shoes properties and methods } class Man extends Shoes { } public class Main { public static…

Java

How to Connect Third Party Api’s in Java

How to Connect Third Party Api's in Java . typically involves using HTTP-based communication libraries such as HttpURLConnection, Apache HttpClient, or more modern options like OkHttp or Spring WebClient. Here’s…

Java

Java programs handling of checked exceptions.

Java programs handling of checked exceptions. Here are five Java programs that demonstrate the handling of checked exceptions, along with step-by-step explanations for each (Java programs handling of checked exceptions.)…

Java

Five Java programs demonstrating the use of the final keyword in Java

Five Java programs demonstrating the use of the final keyword in Java :Below are five Java programs demonstrating the use of the final keyword, along with step-by-step explanations for each.…

Java

Java program to validate a password.

Java program to validate a password. Below is a simple Java program that validates a password based on certain criteria, along with a step-by-step explanation of how it works. Java…

Java

Java Three programs to method overriding.

Java Three programs to method overriding. Three Java programs demonstrating method overriding, along with step-by-step explanations and outputs. Program-1: Basic Method Overriding java class Animal { void sound() { System.out.println("Animal…