simple

Class HelloWorld

  • java.lang.Object
    • simple.HelloWorld


  • public class HelloWorld
    extends java.lang.Object
    Sample Hello World topology application. This Java application builds a simple topology that prints Hello World to standard output.
    The application implements the typical pattern of code that declares a topology followed by submission of the topology to a Streams context com.ibm.streamsx.topology.context.StreamsContext.
    This demonstrates the mechanics of declaring a topology and executing it.

    This may be executed from the samples/java/functional directory as:

    • ant run.helloworld - Using Apache Ant, this will run in embedded mode.
    • java -jar funcsamples.jar:../com.ibm.streamsx.topology/lib/com.ibm.streamsx.topology.jar:$STREAMS_INSTALL/lib/com.ibm.streams.operator.samples.jar simple.HelloWorld [CONTEXT_TYPE] - Run directly from the command line.
    • If no arguments are provided then the topology is executed in embedded mode, within this JVM.
      CONTEXT_TYPE is one of:
      • DISTRIBUTED - Run as an IBM Streams distributed application.
      • STANDALONE - Run as an IBM Streams standalone application.
      • EMBEDDED - Run embedded within this JVM.
      • BUNDLE - Create an IBM Streams application bundle.
      • TOOLKIT - Create an IBM Streams application toolkit.
    • An application execution within your IDE once you set the class path to include the correct jars.

    • Constructor Summary

      Constructors 
      Constructor and Description
      HelloWorld() 
    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method and Description
      static void main(java.lang.String[] args)
      Sample Hello World topology application.
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Method Detail

      • main

        public static void main(java.lang.String[] args)
                         throws java.lang.Exception
        Sample Hello World topology application. This Java application builds a simple topology that prints Hello World to standard output.
        The application implements the typical pattern of code that declares a topology followed by submission of the topology to a Streams context (@code com.ibm.streamsx.topology.context.StreamsContext}.
        Parameters:
        args -
        Throws:
        java.lang.Exception
streamsx.topology @ IBMStreams GitHub