diff --git a/Makefile b/Makefile
index ffc083e..9deccac 100644
--- a/Makefile
+++ b/Makefile
@@ -1,15 +1,24 @@
 CXX=g++ -std=c++11
 
+CAPNP_SOURCES=\
+	src/capnp/PointerReader.java\
+	src/capnp/SegmentReader.java\
+	src/capnp/StructReader.java
+
 CAPNPC_JAVA_SOURCES=src/compiler/capnpc-java.c++
 
 .PHONY: all clean addressbook
 
-all : capnpc-java addressbook
-
+all : capnpc-java addressbook capnp
 
 clean :
 	rm -rf capnpc-java capnp
 
+capnp : capnp/PointerReader.class
+
+capnp/PointerReader.class : $(CAPNP_SOURCES)
+	javac -d . $(CAPNP_SOURCES)
+
 capnpc-java : $(CAPNPC_JAVA_SOURCES)
 	$(CXX) -I/usr/local/include -L/usr/local/lib -lkj -lcapnp $(CAPNPC_JAVA_SOURCES) -o capnpc-java
 
diff --git a/src/capnp/PointerReader.java b/src/capnp/PointerReader.java
new file mode 100644
index 0000000..36f751e
--- /dev/null
+++ b/src/capnp/PointerReader.java
@@ -0,0 +1,7 @@
+package capnp;
+
+public class PointerReader {
+    public SegmentReader segment;
+    public long pointer;
+    public int nestingLimit;
+}
diff --git a/src/capnp/SegmentReader.java b/src/capnp/SegmentReader.java
new file mode 100644
index 0000000..d9e6661
--- /dev/null
+++ b/src/capnp/SegmentReader.java
@@ -0,0 +1,7 @@
+package capnp;
+
+import java.nio.ByteBuffer;
+
+public class SegmentReader {
+    ByteBuffer ptr;
+}
diff --git a/src/capnp/StructReader.java b/src/capnp/StructReader.java
new file mode 100644
index 0000000..c62be38
--- /dev/null
+++ b/src/capnp/StructReader.java
@@ -0,0 +1,17 @@
+package capnp;
+
+public class StructReader {
+    public SegmentReader segment;
+    public long data; //byte offset to data section
+
+    // public WirePointer pointers;
+    public int dataSize; // in bits
+    public short pointerCount;
+    public short bit0Offset;
+    public int nestingLimit;
+
+
+    public <T> T getDataField() {
+        throw new Error();
+    }
+}
diff --git a/src/capnp/layout.java b/src/capnp/layout.java
index 5edd41d..5a3a638 100644
--- a/src/capnp/layout.java
+++ b/src/capnp/layout.java
@@ -1,5 +1,3 @@
 package capnp;
 
-class PointerReader {
 
-}