import com.intellij.openapi.vfs.LocalFileSystem; import com.intellij.openapi.vfs.VirtualFile; public class FileExistExample { public static void main(String[] args) { // Path to the file to be checked String filePath = "/path/to/file.txt"; // Get the virtual file representation of the physical file VirtualFile file = LocalFileSystem.getInstance().findFileByPath(filePath); // Check whether the file exists boolean fileExists = file != null && file.exists(); System.out.println("File exists: " + fileExists); } }In this example, we first get a `VirtualFile` representation of the file we want to check by calling `LocalFileSystem.getInstance().findFileByPath(filePath)`. We then use the `exists()` method to check whether the file exists. The method returns `true` if the file exists and `false` otherwise. The package library for this method is `com.intellij.openapi.vfs`.