Guava equivalent for IOUtils.toString(InputStream)

Question

Apache Commons IO has a nice convenience method IOUtils.toString() to read an InputStream to a String.

Since I am trying to move away from Apache Common

Answer 1

EDIT (2015): Okio is the best abstraction and tools for I/O in Java/Android that I know of. I use it all the time.

FWIW here's what I use.

If I already have a stream in hand, then:

final InputStream stream; // this is received from somewhere
String s = CharStreams.toString(CharStreams.newReaderSupplier(new InputSupplier() {
    public InputStream getInput() throws IOException {
        return stream;
    }
}, Charsets.UTF_8));

If I'm creating a stream:

String s = CharStreams.toString(CharStreams.newReaderSupplier(new InputSupplier() {
    public InputStream getInput() throws IOException {
        return ;
    }
}, Charsets.UTF_8));

As a concrete example, I can read an Android text file asset like this:

final Context context = ...;
String s = CharStreams.toString(CharStreams.newReaderSupplier(new InputSupplier() {
    public InputStream getInput() throws IOException {
        return context.getAssets().open("my_asset.txt");
    }
}, Charsets.UTF_8));