Question

When I build the war file for deployment (ant war), the GWT compiler acts as if it has never heard of java.io.Reader or java.io.BufferedReader. When I make the development build for devmode (ant javac), they build just fine. I’m using GWT 2.4.0. Does anyone know what is going on?

   gwtc:
         [java] Compiling module com.foo.Foo
         [java]    Validating newly compiled units
         [java]       [ERROR] Errors in 'file:[...]/Foo/src/com/foo/shared/ReaderLineIterator.java'
         [java]          [ERROR] Line 13: No source code is available for type java.io.BufferedReader; did you forget to inherit a required module?
         [java]          [ERROR] Line 21: No source code is available for type java.io.Reader; did you forget to inherit a required module?
         [java]    [ERROR] Aborting compile due to errors in some input files

    BUILD FAILED

Answer 1

Not the complete package java.io is supported by GWT.

See the JRE Emulation Reference for details