Using Eclipse jdt facilities, you can traverse the AST of java code snippets as follows:

ASTParser ASTparser = ASTParser.newParser(AST.JLS3);
ASTparser.setSource("package x;class X{}".toCharArray());
ASTparser.createAST(null).accept(...);

But when trying to perform code complete & code selection it seems that I have to do it in a plug-in application since I have to write codes like

IFile file = ResourcesPlugin.getWorkspace().getRoot().getFile(new Path(somePath));
ICodeAssist i  = JavaCore.createCompilationUnitFrom(f);
i.codeComplete/codeSelect(...)

Is there anyway that I can finally get a stand-alone java application which incorporates the jdt code complete/select facilities?

thx a lot! shi kui