How To Test Internet Connection Using Java

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It is very often required to test the internet connection for performing some operations. If there is no internet connection established, then alternative logic will be executed. Java provides useful classes in java.net package for connecting to the internet. Here I written a very simple example to test if your system is connected to internet. […]

How To Check Network Connection Using Java

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It if often required to get the details of the network connection in your desktop. It will be useful if you could get the details of all the connected network details for the future operations. Java has set of classes in the java.net package which is useful for the Java network programming. In this example […]

How To Get OS In Java

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This post writes a simple Java example program ┬áto get the current operating system. There is a system property in Java,┬áSystem.getProperty(“os.name”) which returns the operating system. However, this utility returns the operating system type like Windows, Mac, Unix or Linux. Lets look at the below example. GetOSExample.java Output…

File Modified Date Manipulation in Java

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This example demonstrates the basic data manipulation operation in a File object. Java File object has set of methods to perform the following operations: Get the file last modified date Change the file modified date Lets look at the example to see how the above operations are implemented in Java example program. We use SImpleDateFormat […]

How To Set The File Permissions In Java

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Setting the file permissions in Java is OS specific. Each type of file system have different kind of file systems. Java provides the very generic solution to set the file permissions for all kind of file systems. This example demonstrates how to set file permissions to a file in the Linux operating system using Java […]

Convert InputStream To String In Java

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In my previous example, I have written a simple program to covert string object to InputStream. This tutorial does the reverse, converting inputstream into a string object. Lets look at the example.

Convert String To InputStream In Java

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This is simple exmaple for converting string object to a InputStream and then read it using the BufferedReader.

How To Delete Temporary File In Java

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In my previous article I have explained about how to create and write into a temporary file. Normally this file will be deleted once the operation is completed. Lets look at this simple example, to understand getting the temporary file path and deleting it on exit of the program. Delete Temporary File Example Output…

How To Create + Write Temporary File In Java

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If you are working on the file operations, it is obvious that you have to use the temporary file concept for the file transfer activities. When you download or transfer a file from one location to another, a temporary file is created and then data transferred to the location. Once the entire data is transferred, […]

Create Directory in Java

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With the help of File IO API in Java, you can create a single directory or multiple directories in the disk. Here I wrote a very simple example to demonstrate the use of File class and create the directories. mkdir – Creates a directory mkdirs – Creates multiple directories Create Directory Example CreateDirectoryDemo.java