encoding error,help

[qcy_technical]

i call the setEncoding() mothed,but have below error,

 

E:\CVShome\javabean>java ArticleFunction
Exception in thread "main" java.lang.NoSuchMethodError: org.w3c.dom.Document.set
Encoding(Ljava/lang/String;)V
        at ArticleFunction.addArticle(ArticleFunction.java:111)
        at ArticleFunction.main(ArticleFunction.java:126)

 

 

qcy