#fixed code
                                @Test
    public void logToFile() throws Exception {
        final FileOutputStream fos = new FileOutputStream(LOGFILE, false);
        fos.flush();
        fos.close();
        final Logger logger = LogManager.getLogger("org.apache.logging.log4j.test2.Test");
        logger.debug("This is a test");
        final DataInputStream is = new DataInputStream(new BufferedInputStream(new FileInputStream(LOGFILE)));
        try {
            int count = 0;
            String str = "";
            while (is.available() != 0) {
                str = is.readLine();
                ++count;
            }
            assertTrue("Incorrect count " + count, count == 1);
            assertTrue("Bad data", str.endsWith("This is a test"));
        } finally {
            is.close();
        }
    }
#vulnerable code 
                                @Test
    public void logToFile() throws Exception {
        final FileOutputStream fos = new FileOutputStream(LOGFILE, false);
        fos.flush();
        fos.close();
        final Logger logger = LogManager.getLogger("org.apache.logging.log4j.test2.Test");
        logger.debug("This is a test");
        final DataInputStream is = new DataInputStream(new BufferedInputStream(new FileInputStream(LOGFILE)));
        int count = 0;
        String str = "";
        while (is.available() != 0) {
            str = is.readLine();
            ++count;
        }
        assertTrue("Incorrect count " + count, count == 1);
        assertTrue("Bad data", str.endsWith("This is a test"));
    } 
                            #location 14 
                            #vulnerability type RESOURCE_LEAK