下面是一个示例代码: List<Node>nodeList=newArrayList<>();nodeList.add(rootNode);List<Node>flatList=nodeList.stream().flatMap(node->Stream.concat(Stream.of(node),node.getChildren().stream())).collect(Collectors.toList()); 1. 2. 3. 4. 5. 6. 上述代码首先创建了一个包含根节点的列表。然后,...
public static void main(String[] args) { List<String> list=new ArrayList<String>(); list.add("张三"); list.add("李四"); list.add("王五"); list.add("赵六"); //方法一.for循环迭代 System.out.println("--- for循环迭代 ---"); for(int i=0;i<list.size();i++){ System.out....
importcom.google.gwt.dom.client.NodeList;//导入依赖的package包/类publicvoidonModuleLoad(){// GWT.setUncaughtExceptionHandler(new ClientExceptionHandler());NodeListnl = Document.get().getElementsByTagName("style");finalArrayList<String> toLoad =newArrayList<String>();for(inti =0; i < nl.getLength...
* @param items list 数组 * @param <T> 树节点 * @return 树形列表 */publicstaticList<TreeNode>quickListToTree(List<TreeNode>items){List<T>rootList=items.stream().filter(c->c.getParentId()==null||c.getParentId().equals(0L)).collect(Collectors.toList());// 用一个栈集合代替递归的函...
列表:List<String> result = stream.collect(Collectors.toList()); 集:Set<String> result = stream.collect(Collectors.toSet()); TreeSet<String> result = stream.collect(Collectors.toCollection(TreeSet::new)); 字符串:String result = stream.collect(Collectors.joining()); ...
//读取xml文件，xmlFile为读取文件的路径DocumentBuilderFactoryfactory=DocumentBuilderFactory.newInstance;DocumentBuilderbuilder=factory.newDocumentBuilder;Documentdocument=builder.parse(xmlFile);NodeListnodeList=document.getElementsByTagName(thisTag);//指定标签（thisTag）的节点集合for(itni=0;inodeList....
NodeList NodeSetData NoInitialContextException NON_EXISTENT NoninvertibleTransformException NonReadableChannelException NonWritableChannelException NoPermissionException NormalizedStringAdapter Normalizer Normalizer.Form NoRouteToHostException NoServant NoServantHelper NoSuchAlgorithmException NoSuchAttri...
();NodeList bookList=doc.getElementsByTagName("book");for(int temp=0;temp<bookList.getLength();temp++){Node nNode=bookList.item(temp);if(nNode.getNodeType()==Node.ELEMENT_NODE){Element eElement=(Element)nNode;System.out.println("Title: "+eElement.getElementsByTagName("title").item(0...
publicList<Node>getTree(){ List<Node> nodeList = getNodeList(); List<Node> list = nodeList.stream() .filter(node ->0== node.getPid()) .map(node -> { node.setChildren(streamPeekGetTree(node, nodeList)); returnnode; }) .collect(Collectors.toList()); ...
所以这个方法返回 List 而我需要一个 ArrayList?如果我尝试投射它不成功……有什么建议吗? 此外,如果我将 ArrayList 更改为 HashMap 中的 List,我会得到 java.lang.UnsupportedOperationException 因为我的代码中有这一行 sentenceList.add(((Element)sentenceNodeList.item(sentenceIndex)).getTextContent()); 有更...