I have installed the latest jdk , ant set target and source to 1.7 . But I always encounter the same error message. ------------------ Original ------------------ From: "peng";<peng.dev at qq.com>; Date: Sun, May 4, 2014 06:48 PM To: "wido"<wido at widodh.nl>; Subject: [rados-java] Hi, I am a newer for ceph . And I found rados-java in github,but there are some problems for me . Hi, Firstly , I have to say rados-java is exactly what I need. It 's very in demand. After I downloaded the source zip,and unzip it, then I input the command : "ant jar" . First , I see it needs Jdk 1.7. but ,I only have jdk1.6 in my machine. So I edit the build.properties,and change the version to 1.6 . Second, I try " ant jar " again . And I found the following information: ( To make sure jna.jar is right there, I type : [root at mon rados-java-master]# ls /usr/share/java/jna.jar /usr/share/java/jna.jar ) build: [javac] Compiling 15 source files to /root/baipeng/rados-java-master/target/classes [javac] /root/baipeng/rados-java-master/src/main/java/com/ceph/rados/Library.java:39: cannot find symbol [javac] symbol : method nativeValue(com.sun.jna.Pointer,long) [javac] location: class com.sun.jna.Pointer [javac] Pointer.nativeValue(ptr, 0L); [javac] ^ [javac] /root/baipeng/rados-java-master/src/main/java/com/ceph/rbd/Library.java:39: cannot find symbol [javac] symbol : method nativeValue(com.sun.jna.Pointer,long) [javac] location: class com.sun.jna.Pointer [javac] Pointer.nativeValue(ptr, 0L); [javac] ^ [javac] 2 errors It seems there are something wrong about jna.... Appreciate any help :) Thanks a lot. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.ceph.com/pipermail/ceph-users-ceph.com/attachments/20140505/bc14b25c/attachment.htm>