Java Random File getRandomFilename(String prefix, String sufix)

Description

Returns the unique filename.

License

Open Source License

Parameter

Parameter	Description
prefix	can be "/tmp/tmpImage"
sufix	typicaly - dot + extension ".bmp"

Return

String filename, like "/tmp/tmpImage32397371.bmp"

Declaration

public static synchronized String getRandomFilename(String prefix, String sufix) 

Method Source Code

//package com.java2s;
import java.util.*;
import java.io.*;

public class Main {
    /** Returns the unique filename.
     * @param prefix can be "/tmp/tmpImage"
     * @param sufix typicaly - dot + extension ".bmp"
     * @return String filename, like "/tmp/tmpImage32397371.bmp"
     *///from  w  ww  . ja va2 s. c om
    public static synchronized String getRandomFilename(String prefix, String sufix) {
        Random random = new Random();
        int n = random.nextInt();
        String res = prefix + Math.abs(n) + sufix;
        File file = new File(res);
        if (file.exists())
            return getRandomFilename(prefix, sufix);
        else
            return res;
    }
}

Related

1. getRandomFile(String dir)
2. getRandomFile(String testName)
3. getRandomFilename(String filePath)
4. getRandomFilenameInDirectory(File rootFolder)