Java Utililty Methods Properties Load from File

if (file == null)
    return null;
FileReader reader = new FileReader(file);
try {
    return loadProperties(reader);
} finally {
    reader.close();

Properties properties = new Properties();
try (InputStream in = new FileInputStream(file)) {
    properties.load(in);
return fromProperties(properties);

if (file != null) {
    if (!file.isDirectory()) {
        InputStream inputStream = new FileInputStream(file);
        return loadProperties(inputStream);
    } else {
        return loadPropertyDirectory(file);
return null;

Properties props = new Properties();
try {
    final InputStream in = new BufferedInputStream(new FileInputStream(file));
    try {
        props.load(in);
        return props;
    } finally {
        safeClose(in);
...

Properties properties = new Properties();
FileInputStream fis = new FileInputStream(file);
try {
    properties.load(fis);
} finally {
    fis.close();
return properties;
...

InputStream in = null;
try {
    in = new FileInputStream(file);
    return loadProperties(in, charset);
} finally {
    if (in != null) {
        in.close();

Properties properties = new Properties();
InputStream is = new FileInputStream(fileName);
try {
    properties.load(is);
} finally {
    is.close();
for (Map.Entry<Object, Object> entry : properties.entrySet()) {
...

if (path == null) {
    throw new IllegalArgumentException("path must not be null"); 
try (FileInputStream in = new FileInputStream(path)) {
    Properties properties = new Properties();
    properties.load(in);
    return properties;

Properties properties = new Properties();
if (propertyFile.exists()) {
    InputStream in = null;
    try {
        in = new FileInputStream(propertyFile);
        properties.load(in);
    } catch (IOException e) {
        throw new RuntimeException(e);
...

if (propertyFile.exists()) {
    FileInputStream fis = null;
    try {
        fis = new FileInputStream(propertyFile);
        properties.load(fis);
        fis.close();
        return true;
    } catch (IOException e) {
...