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…
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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…
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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…
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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 …
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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…
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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…
