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Category Archives: Java Programs

The LinkedHashMap is just like HashMap with an additional feature of maintaining an order of elements inserted into it. LinkedHashMap in Java is an implementation… Read More
JDBC (Java Database Connectivity) is basically a standard API(application interface) between the java programming language and various databases like Oracle, SQL, PostgreSQL, etc. It connects… Read More
Java supports many databases and for each database, we need to have their respective jar files to be placed in the build path to proceed… Read More
Java has its own API which JDBC API which uses JDBC drivers for database connections. JDBC API provides the applications-to-JDBC connection and JDBC driver provides… Read More
Have you ever wondered how different cells in a PDF table are set to various colors? Well, in this article we’ll be seeing how we… Read More
In this article, we will learn how to add watermarks to the images in a PDF document using Java. Adding watermarks to the images in… Read More
A constructor in Java is a special method that is used to initialize an object. Whenever an object is created using the new() keyword at… Read More
A constructor in Java is a special method that is used to initialize an object. Whenever an object is created using the new keyword at… Read More
Merging multiple PDF documents into a single PDF document is done using the PDFMergerUtility class. This class will take a list of PDF documents and… Read More
To insert an image in a PDF using Java can be done by using a library called iText. iText is a Java library originally created… Read More
Prerequisite knowledge of the following Java programming topics: Java String Java Exception Handling Convert Stack Trace to String In the program below, we’ve dropped an… Read More
Java supports many databases and for each database, we need to have their respective jar files to be placed in the build path to proceed… Read More
HTML is the core of the web, all the pages you see on the internet are HTML, whether they are dynamically generated by JavaScript, JSP,… Read More
Inner class means one class that is a member of another class. There are basically four types of inner classes in java. Nested Inner class… Read More
A decimal number is the sum of digits multiplied with a power of 10. Decimal numbers are represented with base 10 whereas hexadecimal Number is… Read More

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