Implementing the interface
Because the SEI is a standard Java interface, the class that implements it is just a standard Java class. If you started with a Java class you will need to modify it to implement the interface. If you are starting fresh, the implementation class will need to implement the SEI.
The below shows a class for implementing the above interface. .
Implementation for SEI
package org.apache.cxf;
import java.util.*;
public class StockQuoteReporter implements QuoteReporter {
   ...
   public Quote getQuote(String ticker) {
      Quote retVal = new Quote();
      retVal.setID(ticker);
      retVal.setVal(Board.check(ticker));[1]
      Date retDate = new Date();
      retVal.setTime(retDate.toString());
      return(retVal);
   }
}