package sample; import java.io.*; public class SampleClass { public static void main(String[] args) throws IOException { Sample s = new Sample(); s.drink = "牛乳"; s.food = "あんぱん"; System.out.println(s.buy()); } } class Sample { String drink = "コーヒー"; String food = "サンドイッチ"; String buy() { return drink + "と" + food + "を買いました。"; } }