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gwtplaynbytebuffer

ByteBuffer to String in GWT

On a PlayN project I have the following Java code

import com.google.common.base.Charsets;
import java.nio.ByteBuffer;

ByteBuffer msg = ... // a ByteBuffer that contains a String
String s = Charsets.UTF_8.decode(msg).toString();

this works fine in Java, but when I try to compile it with GWT I get:

The method decode(ByteBuffer) is undefined for the type Charset

What's the proper way, in GWT, to obtain a String (encoded in UTF-8) that's inside a ByteBuffer?

Solution

  • You should be able to use new String(bytes, "UTF-8") after getting the bytes out of the ByteBuffer as a byte[] using ByteBuffer#get(byte[]).
    This String constructor, along with getBytes(String), is implemented for UTF-8 and ISO-8859-1.