![]() Public void readMyFile(String inputLine) throws ExceptionįileInputStream fis = new FileInputStream("InfectiousDisease. I couldnt find a way to rename the emporary file to the original file. Here we have used the delete() method to delete the file specified by the object.I have the following Java code which will search in an xml for a specific tag and then will add some text to it and save that file. The file now holds the information about the specified file. In the above example, we have created an object of File named file. But what if we have 100 to 200 files to rename So let’s learn java code to rename files or code to rename multiple files in a folder. Example: Delete a file import java.io.File Java code to rename all files in a folder Often it is very easy to rename two or more files in a folder. Note: We can only delete empty directories. We can use the delete() method of the File class to delete the specified file or directory. Here when we run the program, the output.txt file is filled with the following content. To write data to the file, we have used the write() method. FileWriter output = new FileWriter("output.txt") The writer is linked with the output.txt file. In the above example, we have created a writer using the FileWriter class. String data = "This is the data in the output file" įileWriter output = new FileWriter("output.txt") Example: Write to file using FileWriter // importing the FileWriter class To write data to the file, we can use subclasses of either OutputStream or Writer. ![]() To read the data from the input.txt file, we have used the read() method of FileReader. ![]() FileReader input = new FileReader("input.txt") It is now linked with the input.txt file. In the above example, we have used created an object of FileReader named input. importing the FileReader classįileReader input = new FileReader("input.txt") You can use the renameTo () method to rename a file or directory to a new name which does not exist. Rename File/Directory Example with renameTo () method. Now let's try to read the file using Java FileReader. To rename or move a file/directory in Java, you can use either the renameTo () method of a File object in the old File I/O API, or the Files.move () method in the new Java NIO API. Suppose we have a file named input.txt with the following content. To read data from the file, we can use subclasses of either InputStream or Reader. VB Copy Change 'c:test.txt' to the path and filename for the file that you want to rename. This example renames the file named Test.txt to SecondTest.txt. However, if newFile.txt already exists, we will see this message. To rename a file Use the My. method to rename a file. If newFile.txt doesn't exist in the current location, the file is created and this message is shown. Here, we have used the file object to create the new file with the specified path. The file object is linked with the specified file path. In the above example, we have created a file object named file. trying to create a file based on the object create a file object for the current location false if the file already exists in the specified location.Įxample: Create a new File // importing the File class.To create a new file, we can use the createNewFile() method. Instead, a file object is an abstract representation of the file or directory pathname (specified in the parenthesis). Note: In Java, creating a file object does not mean creating a file. The object can be used to work with files and directories. Here, we have created a file object named file. creates an object of File using the path Once we import the package, here is how we can create objects of file. This method returns an IOException, so you must use a proper try-catch block to handle the exception. To create an object of File, we need to import the java.io.File package first. Rename a File Using the renameTo () Method in Java In this example, we are using the File class to get the instance of the file, and then by using the renameTo () method, we renamed the file. ![]() A directory inside a directory is known as subdirectory. Main.java is a Java file that contains information about the Java program.Ī directory is a collection of files and subdirectories. However, in this tutorial, we will focus on the java.io package.Ī file is a named location that can be used to store related information. Therefore, if you want to rename a class, you need to do so in the source code and recompile. There is another package named java.nio that can be used to work with files. You cant just rename a class file, because not only is the name of the class is used to calculate the name of the class file when loading it, but the name of the class is also stored in the class file, and must match the requested class. The File class of the java.io package is used to perform various operations on files and directories.
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