guava/src/com/google/common/io/Resources.java
public static CharSource asCharSource(URL url, Charset charset) {
    return asByteSource(url).asCharSource(charset);
  }
public static CharSource asCharSource(URL url, Charset charset) {
    return asByteSource(url).asCharSource(charset);
  }
Returns a {@link CharSource} that reads from the given URL using the given character set.

@since 14.0