我到处搜索试图弄清楚val$editorkit或下面的$符号是什么意思，但没有运气......请帮忙......privatesynchronizedvoidupdateHtmlEditor(HTMLEditorKiteditorkit,StringReaderreader){Runnablerunnable=newRunnable(editorkit,reader){publicvoidrun(){try{this.val$editorkit.read(this.val$reader,LinkParser.this.htmlViewEditor.getDocument(),LinkP