W3Schools Tryit Editor

import java.io.File; 
public class GetFileInfo { 
 public static void main(String[] args) { 
 File myObj = new File("filename.txt");
 if (myObj.exists()) {
 System.out.println("File name: " + myObj.getName()); 
 System.out.println("Absolute path: " + myObj.getAbsolutePath()); 
 System.out.println("Writeable: " + myObj.canWrite()); 
 System.out.println("Readable: " + myObj.canRead()); 
 System.out.println("File size in bytes: " + myObj.length());
 } else {
 System.out.println("The file does not exist.");
 }
 } 
}