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Java

A collection of 11 issues

Automate Form Filling in PDFs Using iText 5 Library in Java

Have you ever needed to automatically fill out PDF forms with preset data using a Java application? In this post, we'll explore how to achieve this using the iText 5 library. iText is a popular Java library for creating and manipulating PDF documents, including form filling. We'll walk you through

Efficient File Transfer: Pushing and Pulling Files Between a Spring Boot App and an sFTP Server

Are you a developer looking to seamlessly exchange files between your Spring Boot application and an sFTP server? Whether it's pushing files from your app to the server or pulling files from the server to your app, this post will guide you through the process. In this tutorial, we'll cover

how to do LDAP paged search via spring-ldap?

When an LDAP client is accessing a server across a slow connection, or if the client suspects that the result set from a given query may be very large, the client should be able to retrieve a result set in small pieces. The Simple Paged Result extended control allows this

How to Write&Read csv file in Java?

use OpenCSV OpenCSV is able to serialize .csv files into preset and reusable schemas implemented as annotated Java pojo beans com.opencsv opencsv 5.7.1 Write CSV Read CSV opencsv –

How to do AES encryption&decryption in java?

show you the code: Base64 UrlEncoder for query parameter the key and iv are configured in properties in base64 format. So I use Base64 Decoder decode them before create SecretKeySpec and IvParameterSpec. new SecretKeySpec(Base64.getDecoder().decode(aliasKey), "AES"), new IvParameterSpec(Base64.getDecoder().decode(aliasIv))); Since I am using AES

How to do PGP decryption in Java?

In my previous post, I mentioned how to encrypt data with PGP public key. In this post, I will tell you how to decrypt the data with PGP private key. You need a PGP key pair to test the encryption and decryption and see it works. Check this post to

How to do PGP encryption in Java?

In order to do PGP encryption, you need the PGP public key file. In this post I will tell how to encrypt data with PGP public key in Java. Dependencies Welcome to the home of the Legion of the Bouncy Castle. A fun place to stay, if you've got some

How to get OAuth 2.0 access token with a certificate on the Microsoft identity platform?

if you are familiar with OAuth 2.0, you should know how to make the request to the token endpoint with client id, client secret, scope and grant type. Azure Active Directory (Azure AD) supports two types of authentication for service principals: password-based authentication (app secret) and certificate-based authentication. While

How to combine|merge multiple PDF files into a single file via itext pdf java lib?

Here you go, the gist code sample using itext 5. How to merge documents correctly?Is there some way to detect the page size and then use that same page size for those documents? Or, if not, is it possible to have it fit to page?I would like to

How to detect signature images from a pdf document via itextpdf in Java?

Image you have a pdf that requires customer signatures. Such as You want to write a program to sign the signature automatically. First, you need to scan the whole PDF document and find all the places that require signature. Second, you need to replace those places with your fancy signature.