File path from specific directory

Question

hi all ,
How to get full file path from specific directory having many folder inside that directory.
I have file name and main directory name,please help me if you know about it

Answer 1

I recognize that this post is half a year old at this writing, and the OP has probably long since either solved or abandoned the problem in question. That being stipulated: if I understand the question properly, the OP is stating that there is a directory named A, and contained somewhere within that directory or one (or more) of its subdirectories is one (or more) file(s) named abc.txt, and OP would like to be able to locate and obtain the canonical path to said file(s). While I am in no way a java maven, I've written a brief program which appears to do exactly that:
import java.io.*;
public class Main {
    public Main() {
        String whatImLookingFor = "abc.txt";
        String startingDirectory = "A";
        File path = new File("A");
        recursivelySearch(path, whatImLookingFor);
    private void recursivelySearch(File path, String whatImLookingFor) {
        try {
            if (path.isFile()) {
                if (path.getName().equals(whatImLookingFor))
                    System.out.println(path.getCanonicalPath());
            else
                if (path.isDirectory()) {
                    File[] currentFiles = path.listFiles();
                    for (int i=0; i<currentFiles.length; i++)
                        recursivelySearch(currentFiles, whatImLookingFor);
catch(IOException ioe) {
System.out.println("During search got error "+ioe.getMessage());
public static void main(String[] args) {
new Main();