java递归树实现

public static List<SysDict> buildTree(List<SysDict> list, String pid){
    List<SysDict> treeList = new LinkedList<>();

    for (SysDict sysDict : list) {
        if (sysDict.getParentId().equals(pid)) {
            sysDict.setChild(buildTree(list, sysDict.getId()));
            treeList.add(sysDict);
        }
    }
    return treeList;
}