com.sun.jdi.InvocationException发生了调用方法

Question

我正在

  

com.sun.jdi.InvocationException发生了调用方法。误差..

创建对象时的对象。

代码就像：

SearchTree tree = new SearchTree();
// here I am getting com.sun.jdi.InvocationException 
// occurred invoking method.


try
{
    if (searchTreeNodes != null && searchTreeNodes.size() > 0)
    {
        for (SearchTreeNode node: searchTreeNodes)
        {
            tree.add(node);
        }
    }
}

添加方法：

public void add(SearchTreeNode data_) {
    String[] ids = data_.getPath().split("/", 0);

    if (ids.length == 1) {
        System.out.println("Do nothing: There is no result.");
    }
    if (ids.length == 2) {
        this.setData(data_);
    } else {
        String lastButOne = ids[ids.length - 2];

        SearchTree foundNode = getNodeRecursive(this, lastButOne);
        if (foundNode == null) {
            System.out.println("Something is wrong: ");
        } else {
            foundNode.addChild(new SearchTree(data_));
        }
    }
}

public SearchTree getNodeRecursive(SearchTree node_, String nodeString_) {
    if (node_ == null) 
        return null;
    if (node_.getData().getCode().equals(nodeString_)) 
        return node_;
    if (node_.getChildren().size() > 0) {
        for (SearchTree node : node_.getChildren()) {
            SearchTree foundNode =  getNodeRecursive(node, nodeString_);
             if (foundNode != null) {
                 return foundNode;
             }
         }
     }

     return null;
}