diff --git a/pkgs/development/tools/java/jclasslib/builder.sh b/pkgs/development/tools/java/jclasslib/builder.sh
new file mode 100755
index 000000000000..e130845e3d29
--- /dev/null
+++ b/pkgs/development/tools/java/jclasslib/builder.sh
@@ -0,0 +1,16 @@
+. $stdenv/setup || exit 1
+
+tar zxf $src || exit 1
+mkdir -p $out/bin
+mv jclasslib/bin/jclasslib.jar $out/bin/ || exit 1
+
+
+cat >> $out/bin/jclasslib <<EOF
+#! /bin/sh
+
+export JAVA_HOME=$j2re
+
+$j2re/bin/java -jar $out/bin/jclasslib.jar \$@
+EOF
+
+chmod a+x $out/bin/jclasslib || exit 1
diff --git a/pkgs/development/tools/java/jclasslib/default.nix b/pkgs/development/tools/java/jclasslib/default.nix
new file mode 100644
index 000000000000..85359971c7d3
--- /dev/null
+++ b/pkgs/development/tools/java/jclasslib/default.nix
@@ -0,0 +1,12 @@
+{stdenv, fetchurl, j2re}:
+
+stdenv.mkDerivation {
+  name = "jclasslib-2.0";
+  builder = ./builder.sh;
+  src = fetchurl {
+    url = http://belnet.dl.sourceforge.net/sourceforge/jclasslib/jclasslib_unix_2_0.tar.gz;
+    md5 = "31d91bb03fee23410689d2f1c4c439b1";
+  };
+
+  inherit j2re;
+}
diff --git a/pkgs/system/all-packages-generic.nix b/pkgs/system/all-packages-generic.nix
index f5bcb98cedfd..fb6b1120fd37 100644
--- a/pkgs/system/all-packages-generic.nix
+++ b/pkgs/system/all-packages-generic.nix
@@ -306,6 +306,11 @@ rec {
     inherit fetchurl stdenv;
   };
 
+  jclasslib = (import ../development/tools/java/jclasslib) {
+    inherit fetchurl stdenv;
+    j2re = j2sdk15;
+  };
+
   ocaml = (import ../development/compilers/ocaml) {
     inherit fetchurl stdenv x11;
   };