You can easily count the number of words in a string with the following example:ExampleGet your own Java Server String words = "One Two Three Four"; int countWords = words.split("\\s").length; System.out.println
importjava.util.function.Function;importjava.util.stream.Collectors;publicclassMain{publicstaticvoidmain(String[]args){// Define a string 'text' with certain charactersStringtext="abcdaa";System.out.println("Original String: "+text);// Display the original string// Count and display the number o...
1//"-w"操作:传入一个文件路径,返回该文件的词数2publicstaticString getWordsCount(String filePath)throwsIOException {3File file =newFile(filePath);4intwordsCount = 0;5String str =null;6//装饰模式,使其获得多功能7FileReader fileReader =newFileReader(file);8BufferedReader reader =newBufferedReader(...
master(String.format("local[%d]", n_threads)) .getOrCreate(); JavaRDD<String> lines = spark.read().textFile(input_path).javaRDD(); JavaRDD<String> words = lines.flatMap(s -> Arrays.asList(SPACE.split(s)).iterator()); JavaPairRDD<String, Integer> ones = words.mapToPair(s ->...
words=currentLine.split(" "); for(String word:words){ //去掉空格,和空字符 if(!word.equals(" ")&&!word.equals("")){ num++; } } } bw.write(fileName+","+"单词数"+":"); bw.write(num.toString()); br.close(); bw.close(); return num; } public static int lineNum(String fil...
在Hadoop的发行包中也附带了例子的源代码,WordCount.java类的主函数实现如下所示: 1. public static void main(String[] args) throws 2. int res = ToolRunner.run( new Configuration(), new 3. System.exit(res); 4. } 5. 6. } 1. 2. 3. 4. 5. 6. public static void main(String[] args...
create table words( words string )row format delimited fields terminated by '|'; // 数据 hello,java,hello,java,scala,python hbase,hadoop,hadoop,hdfs,hive,hive hbase,hadoop,hadoop,hdfs,hive,hive select word,count(*) from (select explode(split(words,',')) word from words) a group by a...
JavaPairRDD countData = wordsFromFile.mapToPair(t -> new Tuple2(t, 1)).reduceByKey((x, y) -> (int) x + (int) y); countData.saveAsTextFile("CountData"); } public static void main(String[] args) { if (args.length == 0) { ...
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Words.InterfaceConsts.Count Field Reference Feedback Definition Namespace: Android.Provider Assembly: Mono.Android.dll The count of rows in a directory. C# 复制 [Android.Runtime.Register("_COUNT")] public const string Count; Field Value String Attributes RegisterAttribute Remarks The count...