Java allows you to rename a file by using the renameTo(File file)
method, in the java.io.File
First, obtain a reference to the file that you want to rename. Second, invoke the renameTo() method on that reference using a File argument.
Suppose you have a file named Results.dat and you want to rename it Results_May.dat.
The code lines below show how it's done:
//Obtain the reference of the existing file
File oldFile = new File("Results.dat");
//Now invoke the renameTo() method on the reference, oldFile in this case