Identify the Data Extension Using CustomerKey or Name
ET_DataExtensionRow includes unique properties called CustomerKey and Name for specifying the data extension for the rows. You need to define only one of these properties to identify the data extension.
Documentation for the Fuel Java SDK can be found at http://salesforce-marketingcloud.github.io/FuelSDK-Java/
Creating a Data Extension Row
Use the Post method to create a new data extension row within a Marketing Cloud account.
You must set the props property when using the Post method in order to specify the columns values. The values that can be specified for props vary by data extension. If the column names are not known, use the ET_DataExtension_Column SDK object to return those names: