2020-04-30から1日間の記事一覧
2021 Jun. 26. 2020 Apr. 30. 2019 May 06. CompStringLength.java import java.util.Comparator; public class CompStringLength implements Comparator { @Override public int compare(String first, String second){ // null評価 // 両方nullなら等価と…
2020 Apr. 30. public class MainActivity extends AppCompatActivity { static final int PICK_MAIL_ADDRESS_CONTACT_REQUEST = 400; /* * 電話帳アプリをstartActivityForResult()で開く */ public void pickContact( ) { Intent intent = new Intent(Inte…
