goja-core/src/main/java/goja/core/libs/IO.java
public static byte[] readContent(File file) {
        InputStream is = null;
        try {
            is = new FileInputStream(file);
            byte[] result = new byte[(int) file.length()];
            is.read(result);
            return result;
        } catch (IOException e) {
            throw new UnexpectedException(e);
        } finally {
            if (is != null) {
                try {
                    is.close();
                } catch (Exception e) {
                    //
                }
            }
        }
    }
public static byte[] readContent(File file) {
        InputStream is = null;
        try {
            is = new FileInputStream(file);
            byte[] result = new byte[(int) file.length()];
            is.read(result);
            return result;
        } catch (IOException e) {
            throw new UnexpectedException(e);
        } finally {
            if (is != null) {
                try {
                    is.close();
                } catch (Exception e) {
                    //
                }
            }
        }
    }
Read binary content of a file (warning does not use on large file !)

@param file The file te read
@return The binary data