[jira] [Created] (FLINK-2021) Rework examples to use new ParameterTool

[Shang Yuanchun (Jira)]

Robert Metzger created FLINK-2021:
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             Summary: Rework examples to use new ParameterTool
                 Key: FLINK-2021
                 URL: https://issues.apache.org/jira/browse/FLINK-2021
             Project: Flink
          Issue Type: Improvement
          Components: Examples
    Affects Versions: 0.9
            Reporter: Robert Metzger
            Priority: Minor


In FLINK-1525, we introduced the {{ParameterTool}}.
We should port the examples to use the tool.

The examples could look like this (we should maybe discuss it first on the mailing lists):

{code}
public static void main(String[] args) throws Exception {
    ParameterTool pt = ParameterTool.fromArgs(args);
    boolean fileOutput = pt.getNumberOfParameters() == 2;
    String textPath = null;
    String outputPath = null;
    if(fileOutput) {
        textPath = pt.getRequired("input");
        outputPath = pt.getRequired("output");
    }

    // set up the execution environment
    final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
    env.getConfig().setUserConfig(pt);
{code}



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