// 1. Make an existing file temporary
// Construct a File object for the backup created by editing
// this source file. The file probably already exists.
// My editor creates backups by putting ~ at the end of the name.
File bkup = new File("Rename.java~");
// Arrange to have it deleted when the program ends.
bkup.deleteOnExit();
// 2. Create a new temporary file.
// Make a file object for foo.tmp, in the default temp directory
File tmp = File.createTempFile("foo", "tmp");
// Report on the filename that it made up for us.
System.out.println("Your temp file is " + tmp.getCanonicalPath());
// Arrange for it to be deleted at exit.
tmp.deleteOnExit();
// Now do something with the temporary file, without having to
// worry about deleting it later.
writeDataInTemp(tmp.getCanonicalPath());
