In this post we’ll see how to write a Bubble Sort program as a Generic class in Java which can be used with arrays of different data types. Bubble Sort- Java Generic class In the generic class used for Bubble Sort we use a bounded parameter to restrict the type…
Sometimes in your Java application you may want to store some data in a temporary file that can safely be deleted when the work is done. Java IO and NIO APIs itself provide methods to create a temporary file in Java. Table of contents Methods in java.io.File class to create…
In this post we’ll see how to convert 24 hours time format to 12 hours time format and 12 hours time format to 24 hours time format in Java. For the conversion you can either use SimpleDateFormat or Java 8 onward you can use DateTimeFormatter class to do the conversion…
In this post we’ll see a Java program to check whether the number is stable or not. A stable number is a number in which each digit occurs the same number of time. For example 1010, 3355, 2020, 794479, in these numbers you can see that the frequency of each…
In this post we’ll see Java programs to convert LocalDate, LocalTime and LocalDateTime to java.time.Instant. Table of contents Convert LocalDate to Instant in Java Convert LocalTime to Instant in Java Convert LocalDateTime to Instant in Java Convert ZonedDateTime to Instant in Java Convert LocalDate to Instant in Java An Instant…
This post shows how to Write a file asynchronously in Java using the java.nio.channels.AsynchronousFileChannel class. Using AsynchronousFileChannel you can create an asynchronous file channel for reading, writing, and manipulating a file. Writing file using AsynchronousFileChannel Just like reading a file asynchronously, for asynchronous writing also there are two write methods-…
This post shows how to read file in Java asynchronously using the java.nio.channels.AsynchronousFileChannel class. Using AsynchronousFileChannel you can create an asynchronous file channel for reading, writing, and manipulating a file. To see how to write a file asynchronously in Java, check this post- Write a File Asynchronously in Java Reading…
While doing file I/O operations in Java you may need to know the extension of the file. In this post we’ll see a Java program to get the file extension. Since there is no direct Java File API method to get the file extension you will have to use the…
In this article we’ll see a Java program to delete all the files having a specific extension from a directory. The Java program to delete all the files with the certain extension works as given below- 1- Implement FileNameFilter interface to list files with the given extension. 2- Iterate through…
In this article we’ll see a Java program to get all the files having a specific extension from a directory. FileNameFilter Interface in Java In FilenameFilter interface there is method accept(). accept(File dir, String name)– Tests if a specified file should be included in a file list. By implementing this…
