import sun.jvm.hotspot.ui.tree.OopTreeNodeAdapter; //导入依赖的package包/类
void printNode(SimpleTreeNode node) {
    int count = node.getChildCount();
    for (int i = 0; i < count; i++) {
        try {
            SimpleTreeNode field = node.getChild(i);
            if (field instanceof OopTreeNodeAdapter) {
                out.print(field);
                out.print(" ");
                printOopValue(((OopTreeNodeAdapter)field).getOop());
                out.println();
            } else {
                out.println(field);
            }
        } catch (Exception e) {
            out.println();
            out.println("Error: " + e);
            if (verboseExceptions) {
                e.printStackTrace(out);
            }
        }
    }
}