enumã®ä½¿ã„æ–¹ã®ãŠã•ã‚‰ã„ã¨é«˜æ©Ÿèƒ½enumã¨ã—ã¦ã®Sealedクラス - ãã—ã ã®HatenaJavaã§ã¯è¤‡æ•°ã®å®šæ•°ã‚’ã¾ã¨ã‚ã¦æ‰±ã†åž‹ã¨ã—ã¦enum(列挙型)ãŒç”¨æ„ã•ã‚Œã¦ã„ã¾ã™ã€‚ ã“ã‚Œã¯ã“ã‚Œã§ä¾¿åˆ©ãªã®ã§ã™ãŒç‰©è¶³ã‚Šãªã„ã¨ã“ã‚ã‚‚ã‚ã£ã¦ã€ãã‚ŒãŒSealedクラスãªã©ã‚’使ã†ã“ã¨ã§è§£æ±ºã§ãるよã†ã«ãªã‚‹ã®ã§ã€è§£èª¬ã—ã¾ã™ã€‚ enumåž‹ enumã¯çŠ¶æ…‹ã‚„データ区分を表ã™ã®ã«ã‚ˆã使ã‚ã‚Œã¾ã™ã€‚ 構文ã¯æ¬¡ã®ã‚ˆã†ã«ãªã‚Šã¾ã™ã€‚ enum åž‹å { 列挙1, 列挙2, ... } 例ãˆã°æ¬¡ã®ã‚ˆã†ãªçŠ¶æ…‹ã‚’表ã™ã¨ã—ã¾ã™ã€‚ ã“ã®çŠ¶æ…‹ã‚’表ã™enumã¯æ¬¡ã®ã‚ˆã†ã«ãªã‚Šã¾ã™ã€‚ãã‚Œãžã‚Œã®å€¤ã¯å¤§æ–‡å—ã§æ›¸ãよã†ã«ã—ã¾ã™ã€‚ enum State { READY, RUNNING, SUSPENDED, TERMINATED } enumã§ã¯ãã‚Œãžã‚Œã®å€¤ã”ã¨ã«å‡¦ç†ã‚’è¡Œã†ã¨ã„ã†ã“ã¨ãŒã‚ˆãã‚ã‚Šã¾ã™ã€‚ãã“ã§switchã¨ç›¸æ€§ãŒã„ã„ã§ã™ã€‚ State s = State.READY; switch (s) { case READY -> Sy
{{#tags}}- {{label}}
{{/tags}}