In this post we’ll see how to write a Java program to arrange given non-negative numbers to form the biggest number. For example if there is an array of numbers {45, 3, 89, 123} then the numbers should be arranged as 89453123 to form the biggest number. If array of…
In this post we’ll see a Java program to merge PDFs using OpenPDF library. OpenPDF is open source software with a LGPL and MPL license. To know more about OpenPDF library and PDF examples check this post- Generating PDF in Java Using OpenPDF Tutorial Merging PDFs using OpenPDF To merge…
In this post we’ll see how to password protect a PDF in Java using PDFBox library and how to open an encrypted PDF using PDFBox. To know more about PDFBox library and PDF examples in Java using PDFBox check this post- Generating PDF in Java Using PDFBox Tutorial Password protected…
In this post we’ll see a Java program to read text from a PDF document using PDFBox library and a Java program to extract image from a PDF document using PDFBox library. To know more about PDFBox library and PDF examples in Java using PDFBox check this post- Generating PDF…
In this post we’ll see how to set the thread name while creating a thread in Java, how to get the name of the current thread and how to get thread ID in Java. Setting thread name in Java For setting thread name in Java you can pass the thread…
If you have to read delimited file in Java and parse it then you can do it using the following two ways- 1- Using Scanner class with useDelimiter() method. 2- Read file using BufferedReader line by line and then split each line using split() method. Using Scanner class to read…
If you have to read input from console in Java there are 3 options. Using BufferedReader class. See example. Using Scanner class, available from Java 5. See example. Using System.console() method, available from Java 6. See example. Using BufferedReader class By wrapping the standard input stream “System.in” in an InputStreamReader…
Some times you may need to list all the files in a directory to get a specific file, to read all the files or to zip a folder where you need to go through the whole folder tree structure. This post shows how you can list all the files and…
When you zip a file in Java there are different logic based on whether you are zipping a file or you are zipping a folder in Java where the whole directory structure is archived. But unzipping a file in Java doesn’t need such different functionalities. One Java program to unzip…
In the post How to Zip Files in Java we have seen how to zip a single file or multiple files in Java but you may also need to zip a folder in Java where you also retain the folder tree structure while zipping it. This post shows how to…
