Method createTempFile

vm/JavaAPI/src/java/io/File.java:295–316

(String prefix, String suffix, File directory)

    }

    public static File createTempFile(String prefix, String suffix, File directory) throws IOException {
        if (prefix.length() < 3)
            throw new IllegalArgumentException("Prefix string too short");
        if (suffix == null)
            suffix = ".tmp";
        if (directory == null) {
            String tmpDir = System.getProperty("java.io.tmpdir");
            if (tmpDir == null) tmpDir = "/tmp";
            directory = new File(tmpDir);
        }

        File f;
        do {
            long n = System.currentTimeMillis();
             f = new File(directory, prefix + n + suffix);
        } while (f.exists());

        if (!f.createNewFile())
            throw new IOException("Unable to create temporary file");

        return f;
    }

    public static File createTempFile(String prefix, String suffix) throws IOException {
        return createTempFile(prefix, suffix, null);