Compare two Arrays, checking for duplication

Good day. First post here, so please bare with me.

I have two directories containing files. I want to output the files from directory a that are also contained in directory b.

C:/DIFFCHECK/DIR1/: TEST_DUP.txt, TEST_UNI.txt
C:/DIFFCHECK/DIR2/: TEST_DUP.txt, TEST2.txt

Desired output: TEST_DUP.txt is a duplicate.

I believe I need to use a for loop vice nested if statements, but can't get my head around this one. Please help!

What I have so far:

import java.io.File;

public class diffcheck2
{
public static void main(String[] args)
{
//populate the arrays
File f = new File("C:/DIFFCHECK/DIR1/");
File[] rec = f.listFiles();

File g = new File("C:/DIFFCHECK/DIR2/");
File[] hist = g.listFiles();

int i = 0;
int j = 0;
if (rec[i].isFile() && hist[j].isFile())

if (rec[i].getName().equals(hist[j].getName())) {

System.out.println(rec[i].getName());

}
}

}

Don't use two arrays of file names; use two Sets instead (read the API documentation for the Set interface and its implementations).

kind regards,

Jos

The code below shows how i would have done it. Hope it helps :)

[ no spoonfeeding please -- mod ]

Hello JosAH. Please un-edit farhanz2009's post. I'd like to compare to code I have since written that I believe sucessfully solves the problem.
Even with my lack of experience, I have found it is always benificial to view a problem from a different perspective. Thank you in advance :)

My code (works):

import java.io.File;

public class diffcheck2
{
public static void main(String[] args)
{
//populate the arrays
File f = new File("C:/DIFFCHECK/DIR1/");
File[] rec = f.listFiles();

File g = new File("C:/DIFFCHECK/DIR2/");
File[] hist = g.listFiles();

for(int i=0;i<rec.length;i++)
{ boolean found = false;
for(int j=0;j<hist.length;j++){
if((rec[i].getName().equals(hist[j].getName()))){
found = true;
break; } }
if (found)
{
System.out.println("*Duplicate File: "+ rec[i].getName());
}

}
}

}

We don't do any spoonfeeding in this forum; if you have tested your code and it works, you have found a solution similar to the other (spoonfeeding) reply. There's a much better way to do it though, as I suggested in my first reply: use Sets.

kind regards,

Jos