diff --git a/Rakefile b/Rakefile
index 3a13d465800..c501fbb22b1 100644
--- a/Rakefile
+++ b/Rakefile
@@ -34,6 +34,12 @@ desc "Alias for spec:ci"
 task :spec => "spec:ci"
 
 namespace :test do
+  desc "Compile test code"
+  task :compile do
+    ant "compile-test"
+    system "jar cf build/jruby-test-classes.jar -C build/classes/test ."
+  end
+
   desc "Run the basic set of tests"
   task :short do
     ant "test"
@@ -45,6 +51,10 @@ namespace :test do
   end
 end
 
+file "build/jruby-test-classes.jar" do
+  Rake::Task['test:compile'].invoke
+end
+
 namespace :spec do
   desc "Run the rubyspecs expected to pass (version-frozen)"
   task :ci do
@@ -76,4 +86,12 @@ task :gen do
   system 'apt -nocompile -cp lib/jruby.jar:build_lib/asm-3.0.jar:build_lib/asm-util-3.0.jar -factory org.jruby.anno.AnnotationBinder src/org/jruby/*.java'
   system 'javac -cp lib/jruby.jar src_gen/*.java'
   system 'jar -uf lib/jruby.jar -C src_gen .'
-end
\ No newline at end of file
+end
+
+require 'spec/rake/spectask'
+desc "Runs Java Integration Specs"
+Spec::Rake::SpecTask.new("jispec" => "build/jruby-test-classes.jar") do |t|
+  t.spec_opts ||= []
+  t.spec_opts << "--options" << "test/spec/java_integration/spec.opts"
+  t.spec_files = FileList['test/spec/java_integration/**/*_spec.rb']
+end
diff --git a/test/spec/java_integration/README.specs b/test/spec/java_integration/README.specs
new file mode 100644
index 00000000000..28b41c02213
--- /dev/null
+++ b/test/spec/java_integration/README.specs
@@ -0,0 +1,20 @@
+This sub-directory contains specs for JRuby's Java Integration features.
+
+== RUNNING
+
+Run the specs with "jruby -S rake jispec" from the root of the JRuby source tree.
+Specdoc will be printed to the console showing what has been implemented so far.
+
+== NOTES
+
+The work to create the specs is just starting; please follow these guidelines.
+
+- Keep the specs free of outside dependencies.
+- Create fixture Java classes in the fixtures/ subdirectory for use by the specs.
+  Don't use any Java classes other than those in the fixtures directory, or in the
+  JDK itself.
+- Create new *_spec.rb files in subdirectories grouped by functional area. Create new
+  subdirectories if you need to.
+- For speed, the "jispec" task does not recompile the fixture classes. If you're
+  adding new fixture classes, you will need to re-run the "test:compile" rake
+  task in order to pick up the changes.
diff --git a/test/spec/java_integration/fixtures/SingleMethodInterface.java b/test/spec/java_integration/fixtures/SingleMethodInterface.java
new file mode 100644
index 00000000000..56cb2b736cf
--- /dev/null
+++ b/test/spec/java_integration/fixtures/SingleMethodInterface.java
@@ -0,0 +1,5 @@
+package spec.java_integration.fixtures;
+
+public interface SingleMethodInterface {
+    Object callIt();
+}
\ No newline at end of file
diff --git a/test/spec/java_integration/fixtures/UsesSingleMethodInterface.java b/test/spec/java_integration/fixtures/UsesSingleMethodInterface.java
new file mode 100644
index 00000000000..4f6b1bd4f72
--- /dev/null
+++ b/test/spec/java_integration/fixtures/UsesSingleMethodInterface.java
@@ -0,0 +1,10 @@
+package spec.java_integration.fixtures;
+
+public class UsesSingleMethodInterface {
+    public static Object callIt(SingleMethodInterface obj) {
+        return obj.callIt();
+    }
+    public static Object castAndCallIt(Object obj) {
+        return callIt((SingleMethodInterface) obj);
+    }
+}
\ No newline at end of file
diff --git a/test/spec/java_integration/interfaces/implementation_spec.rb b/test/spec/java_integration/interfaces/implementation_spec.rb
new file mode 100644
index 00000000000..e841a26cc84
--- /dev/null
+++ b/test/spec/java_integration/interfaces/implementation_spec.rb
@@ -0,0 +1,24 @@
+require File.dirname(__FILE__) + "/../spec_helper"
+
+import "spec.java_integration.fixtures.SingleMethodInterface"
+import "spec.java_integration.fixtures.UsesSingleMethodInterface"
+
+describe "Single-method Java interfaces implemented in Ruby" do
+  class ValueHolder
+    include SingleMethodInterface
+    def initialize(val)
+      @value = val
+    end
+    def callIt
+      @value
+    end
+  end
+
+  it "should be implemented with 'include InterfaceClass'" do
+    UsesSingleMethodInterface.callIt(ValueHolder.new(1)).should == 1
+  end
+
+  it "should be cast-able to the interface on the Java side" do
+    UsesSingleMethodInterface.castAndCallIt(ValueHolder.new(2)).should == 2
+  end
+end
\ No newline at end of file
diff --git a/test/spec/java_integration/spec.opts b/test/spec/java_integration/spec.opts
new file mode 100755
index 00000000000..49fd993dfd3
--- /dev/null
+++ b/test/spec/java_integration/spec.opts
@@ -0,0 +1,7 @@
+--colour
+--format
+specdoc
+--loadby
+mtime
+--reverse
+--backtrace
\ No newline at end of file
diff --git a/test/spec/java_integration/spec_helper.rb b/test/spec/java_integration/spec_helper.rb
new file mode 100644
index 00000000000..898ebe20bd8
--- /dev/null
+++ b/test/spec/java_integration/spec_helper.rb
@@ -0,0 +1,11 @@
+require 'java'
+require File.dirname(__FILE__) + '/../../../build/jruby-test-classes.jar'
+require 'spec'
+
+Spec::Runner.configure do |config|
+  # config.before :each do
+  # end
+
+  # config.after :each do
+  # end
+end