flink-streaming-java_2.11-1.7.0-sources.jar!/org/apache/flink/streaming/api/datastream/DataStream.java 代码语言:javascript 复制 @Public public class DataStream<T> { //... @PublicEvolving public IterativeStream<T> iterate() { return new IterativeStream<>(this, 0); } @PublicEvolving...
public static void main(String[] args) { //初始化List集合 User user = new User("张三",12,new ArrayList<String>(){{add("中国银行");add("纽约银行");add("商业银行");}},"成都"); User user1 = new User("李四",23,new ArrayList<String>(){{add("建设银行");add("工业银行");add(...
Until Java 8, we cannot havenullvalue in a stream. It would have causedNullPointerException. In Java 9, theofNullablemethod creates a stream containing the given nullable value if it is notnull. Otherwise, creates an empty stream. Stream<String>stream=Stream.ofNullable("123");System.out.print...
"iteration head directly. Apply the partitioning on the input and" + "feedback streams instead."); @Override public ConnectedStreams<I, F> keyBy(int[] keyPositions1, int[] keyPositions2) { throw groupingException; } @Override public ConnectedStreams<I, F> keyBy(String field1, String field...
SELECT * FROM USERS WHERE USER_ID IN <iterate conjunction="," open="(" close=")"> #ids[]# </iterate> 注意:不要property属性,否则报错。String index out of range: -1 2. 但是,若参数有多个传入的一个是List,另一个不是, parameterClass为map时,需要property属性区分...
遍历类型为 java.util.List的元素。 例子: <iterate prepend=”AND” property=”userNameList” open=”(” close=”)” conjunction=”OR”> username=#userNameList[]# </iterate> ibatis中如何配置in语句,需要迭代,不能直接用string的写法 select *from tablewhere name in <iterate property="ids" conjunc...
If the iteratee is in the state Error, then I’ll take the error message of type String and the input that caused it and eventually produce a B.Depending on the state of the iteratee, fold will produce the appropriate B using the corresponding passed-in function.To...
Thenext()method onitreturns the character at the new position orDONEif the new position is the end. importjava.text.CharacterIterator;importjava.text.StringCharacterIterator;publicclassForEachChar{publicstaticvoidmain(String[]args){String myString="Hello Friends";CharacterIterator it=newStringCharacterIter...
Theoutput printed on consoleofIDEisshown below.Output: Program2: // Java program to demonstrate // Stream.iterate method importjava.util.stream.Stream; publicclassGFG{ publicstaticvoidmain(String[]args) { // create a stream using iterate ...
In the above program, we imported a packageSwiftto use theprint()function using the below statement, import Swift; Here, we created a stringstrinitialized with "Hello World". Then access string character by character and print on the console screen. Swift String Programs »...