flink入门代码演示(Java)

引入坐标：

		<dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-java</artifactId>
            <version>1.10.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-streaming-java_2.12</artifactId>
            <version>1.10.1</version>
        </dependency>

WordCount：懂得都懂

1. 从txt文件中获取数据

public class WordCount {
   
   
    public static void main(String