Hi, (In reply to Liu Shukui from comment #9) > Hello everyone, I almost finish the verification in maintenance. > > but I don't know to make a regression test. I try to use the sample case in > the package, but failed, I know rarely about java, is there anyone can > provide me a regression test case? > > sles12-x64:/usr/share/doc/packages/jing/sample/datatype # jing > src/com/thaiopensource/datatype/sample/BalancedString.java valid.xml > /usr/share/doc/packages/jing/sample/datatype/src/com/thaiopensource/datatype/ > sample/BalancedString.java:1:1: fatal: prolog ������������������������ Are you sure you pass to jing the correct parameters? Let's see what jing expects: $ jing Jing version 20091111 usage: java com.thaiopensource.relaxng.util.Driver [-i] [-c] [-s] [-t] [-C catalogFile] [-e encoding] RNGFile XMLFile... RELAX NG is a schema language for XML See http://relaxng.org/ for more information. In other words, jing expects (a) an RNG file and (b) a XML file. However, your input looks strange: You can't validate a Java file. Probably this is where the error came from.