[B! Java][annotation] decoy2004ã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

decoy2004 id:decoy2004

Javaã¨annotationã«é–¢ã™ã‚‹decoy2004ã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (7)

${{author_name}}$

{{{comment_expanded}}}

{{label}}

{{#is_bookmark}}ãƒªã‚¹ãƒˆ{{/is_bookmark}}{{^is_bookmark}}ãƒªãƒ³ã‚¯{{/is_bookmark}}

${{author_name}}$
{{author_name}}{{created}}
{{ #comment }}{{ comment }}{{ /comment }}
- {{ label }}

${{author_name}}$

{{{comment_expanded}}}

{{label}}

{{#is_bookmark}}ãƒªã‚¹ãƒˆ{{/is_bookmark}}{{^is_bookmark}}ãƒªãƒ³ã‚¯{{/is_bookmark}}

JJUG åˆã‚ã¦è¡Œã£ãŸã‚‰éžå¸¸ã«è‰¯ã‹ã£ãŸã¨ã„ã†è©± (JJUG CCC 2016 Spring) - Qiita
Checker Framework ç¾åœ¨ï¼ŒJava æ¨™æº–ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã«é™çš„è§£æžç”¨ã® Type Annotation ã¯å®šç¾©ã•ã‚Œã¦ã„ãªã„ï¼Ž ã—ã‹ã—ï¼ŒType Annotation ã® JSR ã®ãƒªãƒ¼ãƒ‰ã®ä¸€äººã§ã‚ã‚‹ Michael Ernst ã«ã‚ˆã‚‹ Checker Framework ãŒã‚ã‚‹ï¼Ž(Java SE7 ã§ã‚‚å‹•ãï¼) é›‘æ„Ÿ æ«»åºã•ã‚“ã®ãŠè©±ã‚’ç›´æŽ¥ä¼ºã£ãŸã®ãŒåˆã‚ã¦ã ã£ãŸã®ã§æ„Ÿæ¿€ï¼Ž Java SE ã®ã‚¹ãƒšãƒƒã‚¯ãƒªãƒ¼ãƒ‰ã‚’å‹™ã‚ã¦ã„ã‚‹äººã®é¡”ã¨åå‰ã‚’è¦šãˆã‚ˆã†ï¼ã¨ã„ã†è©±ãŒå°è±¡ã«æ®‹ã£ãŸï¼Žè‡ªåˆ†ã¯ãƒžãƒ¼ãƒ†ã‚£ãƒ³ãƒ»ãƒ•ã‚¡ã‚¦ãƒ©ãƒ¼ã‚„ã‚¸ãƒ§ã‚·ãƒ¥ã‚¢ãƒ»ãƒ–ãƒãƒƒã‚¯ã®ã‚ˆã†ãªå¤å…¸çš„åè‘—ã‚’æ›¸ã„ãŸäººç‰©ã¯ã‚ã‚‹ç¨‹åº¦è¦šãˆã¦ã„ã‚‹ã‚‚ã®ã®ï¼Œãƒªã‚¢ãƒ«ã‚¿ã‚¤ãƒ ã®ãƒªãƒ¼ãƒ‰ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã«ã¤ã„ã¦ã¯ç´ äººã‚‚ã—ã¦ã„ãªã‹ã£ãŸãªãã¨æ€ã£ãŸã®ã§ï¼Ž GH-2 Eclipse Collectionsã§å¦ã¶ã‚³ãƒ¼ãƒ‰å“è³ªå‘ä¸Šã®å‹˜æ‰€ by ä¼Šè—¤åšå¿—ã•ã‚“ ç™ºè¡¨è³‡æ–™ ã‚´ãƒ¼ãƒ«ãƒ‰ãƒžãƒ³ãƒ»ã‚µãƒƒã‚¯ã‚¹ (ä»¥ä¸‹
decoy2004 2016/05/23
Java

JJUG

annotation
ãƒªãƒ³ã‚¯
ã‚¢ãƒŽãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ãƒ—ãƒã‚»ãƒƒã‚µãƒ¼ã§è‡ªå‹•ç”Ÿæˆã™ã‚‹ã¨ãã«ãƒãƒžã£ãŸã‚ãŸã‚Šã®è©± #ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰è‡ªå‹•ç”Ÿæˆ - mike-neckã®ãƒ–ãƒã‚°
ã“ã‚“ã«ã¡ã‚ã€ã¿ã‘ã§ã™ã€‚ æ˜¨æ—¥ã«å¼•ãç¶šã„ã¦ã‚¢ãƒŽãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ãƒ—ãƒã‚»ãƒƒã‚µãƒ¼ã®ã‚ã‚Œã‚’ã‚ã‚Œã™ã‚‹ã‚ã‚Œã§ã™ã€‚ æ¦‚è¦ ãƒ—ãƒã‚»ãƒƒã‚µãƒ¼ã‚’æŒ‡å®šã™ã‚‹ ã‚¢ãƒŽãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ãƒ—ãƒã‚»ãƒƒã‚µãƒ¼ã«ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿ãƒ¼ã‚’æ¸¡ã™ ãƒ—ãƒã‚»ã‚¹å¯¾è±¡ã®ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã®ãƒªã‚½ãƒ¼ã‚¹ã¯å–å¾—ã§ããªã„ 1. ãƒ—ãƒã‚»ãƒƒã‚µãƒ¼ã‚’æŒ‡å®šã™ã‚‹ ãƒ—ãƒã‚»ãƒƒã‚µãƒ¼ã‚’æŒ‡å®šã™ã‚‹æ–¹æ³•ã¯æ¬¡ã®ã¨ãŠã‚ŠäºŒã¤ã‚ã‚Šã¾ã™ã€‚ javacã®-processorã‚ªãƒ—ã‚·ãƒ§ãƒ³ã§æŒ‡å®šã™ã‚‹ src/main/resource/META-INF/services/javax.annotation.processing.Processorãƒ•ã‚¡ã‚¤ãƒ«ã§æŒ‡å®šã™ã‚‹ -processorã‚ªãƒ—ã‚·ãƒ§ãƒ³ã§æŒ‡å®šã™ã‚‹å ´åˆã¯æ¬¡ã®ã‚ˆã†ã«ã€ javac -processor jp.hoge.foo.BarProcessor,jp.hoge.foo.BasProcessor -classpath ... ã‚«ãƒ³ãƒžåŒºåˆ‡ã‚Šã§ãƒ—ãƒã‚»ãƒƒã‚µãƒ¼ã®ã‚¯ãƒ©ã‚¹åã‚’æŒ‡å®šã—ã¾ã™
decoy2004 2015/04/19
java

annotation
ãƒªãƒ³ã‚¯
[java] ãƒ¢ãƒ€ãƒ³ãª Annocation Processor ã®é–‹ç™ºæ‰‹é †ã¾ã¨ã‚ - tokuhirom's blog
APT ã¨ã¯ Annotation Processing Tool ã®ã“ã¨ã§ï½¤Java ã§ã‚³ãƒ¼ãƒ‰ã®è‡ªå‹•ç”Ÿæˆã‚’è¡Œã†éš›ã«åˆ©ç”¨ã•ã‚Œã‚‹ï½¡ APT ã‚’åˆ©ç”¨ã™ã‚‹ã¨ï½¤Java ã‚¯ãƒ©ã‚¹ã‚„ãƒªã‚½ãƒ¼ã‚¹ã®è‡ªå‹•ç”ŸæˆãŒå¯èƒ½ã¨ãªã‚‹ï½¡ ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã«æƒ…å ±ã¯çµæ§‹ã‚ã‚‹ã®ã ãŒï½¤æ˜”ã®ã‚‚ã®ãŒå¤šãã¦ï½¤Eclipse ã« JAR ã‚’è¿½åŠ ã—ã¦äº‘ã€…ã¨ã‹ãã†ã„ã†æ„Ÿã˜ã®ã‚‚ã®ãŒå¤šãã¦è¾›ã„ã®ã§èª¿ã¹ãŸã“ã¨ã‚’ã¾ã¨ã‚ã¦ãŠãï½¡ ã‚¢ãƒŽãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ã‚’ä½œã‚‹ é©å½“ãªã‚¢ãƒŽãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ã‚’ä½œã‚‹ï½¡ import java.lang.annotation.ElementType; import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy; import java.lang.annotation.Target; @Retention(RetentionPolicy.SO
decoy2004 2015/03/31
ã‚ã¨ã§èªã‚€

annotation

java

apt
ãƒªãƒ³ã‚¯
Bean Validationã§ç‹¬è‡ªã®ã‚¢ãƒŽãƒ¼ãƒ†ã‚·ãƒ§ãƒ³ã‚’ä½œæˆã—ã€æ¤œè¨¼ã‚’è¡Œã†
Javaã«ã¯Bean Validationã¨ã„ã†ã‚‚ã®ãŒã‚ã‚Šã¾ã™ã€‚ãƒ•ã‚£ãƒ¼ãƒ«ãƒ‰ã«@NotNullãªã©ã¨ä»˜ã‘ã¦ãŠãã‚¢ãƒ¬ã§ã™ã€‚JSR303ã¨å‘¼ã°ã‚Œã¦ã„ã¾ã™ã€‚ä»Šæ—¥ã¯ã“ã®è©±ã§ã™ã€‚ Bean Validationã§ã™ãŒã€ã‚¯ãƒ©ã‚¹ã®ãƒ•ã‚£ãƒ¼ãƒ«ãƒ‰ã«@Hogeã¨ã‹ä»˜ã‘ã¦ãŠã„ã¦ã€å¾Œã¯ãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯ã«å‹æ‰‹ã«æ¤œè¨¼ã•ã›ã‚‹ãªã‚Šã€è‡ªåˆ†ã§validã™ã‚‹ãªã‚Šã—ã¦åˆ©ç”¨ã™ã‚‹ã‹ã¨æ€ã„ã¾ã™ã€‚ ã“ã‚Œã€å®Ÿéš›ã«ä½¿ã£ã¦ã¿ã‚‹ã¨ç¢ºã‹ã«ä¾¿åˆ©ã§è‰¯ã„ã®ã§ã™ãŒã€è‡ªåˆ†ã®ãƒ“ã‚¸ãƒã‚¹ãƒã‚¸ãƒƒã‚¯ã®ãƒ‹ãƒ¼ã‚ºã«ãƒžãƒƒãƒã™ã‚‹ã‚¢ãƒŽãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ãŒç„¡ã„ï¼ã¨ã„ã†ã“ã¨ãŒå‰²ã¨é »ç¹ã«ç™ºç”Ÿã—ã¾ã™ã€‚ãã“ã§ã€ç‹¬è‡ªã®ã‚¢ãƒŽãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ã‚’ä½œã£ã¦ã—ã¾ãŠã†ï¼ã¨ã„ã†ã®ãŒä»Šå›žã®ãƒ¡ã‚¤ãƒ³ã®è©±ã§ã™ã€‚ å‚è€ƒæƒ…å ± JSR303ã¨ã¯ä½•ã‹ã€Bean ValidationãŒä½•ã‹ã‚’çŸ¥ã‚ŠãŸã„äººã¯ä»¥ä¸‹ãŒå‚è€ƒã«ãªã‚‹ã‹ã¨æ€ã„ã¾ã™ã€‚ JSR 303Â Bean Validationã§éŠã‚“ã§ã¿ã‚‹ã‚ˆï¼ - Yamkazuâ€™s Blog ä¸Šè¨˜ã®ãƒšãƒ¼ã‚¸
decoy2004 2014/09/06
java

annotation
ãƒªãƒ³ã‚¯
ã‚¢ãƒŽãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ã‚’è‡ªä½œã—ã¦ã¿ã‚‹ã€‚ - Qiita
import java.lang.reflect.Method; import java.lang.annotation.Annotation; import java.lang.annotation.Target; import java.lang.annotation.ElementType; import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy; public class MyAnnotation { public static void main(String[] args) { Class clazz = MyAnnotation.class; Method[] methods = clazz.getDeclaredMethods(); for (Method meth
decoy2004 2014/08/18
java

programming

annotation
ãƒªãƒ³ã‚¯
Eclipse Junoã§nullè§£æžã‚’è¡Œã† - Qiita
Eclipse Junoã§nullè§£æžã‚’è¡Œã† Eclipse Juno(4.2)ã‹ã‚‰ã€@NullableãŒä»˜ã„ãŸãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿ã‚’ã€ãã®ãƒ¡ã‚½ãƒƒãƒ‰å†…ã§Nullãƒã‚§ãƒƒã‚¯ã—ã¦ã„ãªã„å ´åˆã¯warningã‚„errorã«ã™ã‚‹ã“ã¨ãŒå‡ºæ¥ã‚‹ã‚ˆã†ã«ãªã‚Šã¾ã™ã€‚ @Nullable Nullableã‚¢ãƒŽãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ãŒã¤ã„ã¦ã„ã‚‹ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿ã¯ã€ãã®ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿ã«ã¯NullãŒæ¸¡ã•ã‚Œã‚‹ã“ã¨ã‚‚è¨±å®¹ã™ã‚‹ã¨ã„ã†æ„å‘³ã«ãªã‚Šã¾ã™ã€‚ ãªã®ã§ã€ãƒ¡ã‚½ãƒƒãƒ‰å†…ã§å€¤ã®Nullãƒã‚§ãƒƒã‚¯ã‚’è¡Œã†å¿…è¦ãŒã‚ã‚Šã¾ã™ã€‚ ä¾‹ãˆã°ã€ä»¥ä¸‹ã®ã‚ˆã†ãªã‚³ãƒ¼ãƒ‰ã‚’æ›¸ã„ãŸã¨ã—ã¾ã™ã€‚ import static org.junit.Assert.assertEquals; import javax.annotation.Nullable; import org.junit.Test; public class NullableTest { @Test public void test
decoy2004 2014/08/17
ã€ŽPreferencesã®ã€ŒJava > Compiler > Errors/Warningsã€ã®ä¸€ç•ªä¸‹ã«ã€ŒNull analysisã€ã¨ã„ã†é …ç›®ãŒã‚ã‚Šã¾ã™ã€‚ã€

java

Eclipse

null

jsr305

annotation

tips
ãƒªãƒ³ã‚¯
FindBugs ã® @NonNull @CheckForNull ã‚¢ãƒŽãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ - ã‚ã‚‹ãƒ—ãƒã‚°ãƒ©ãƒžã®æ—¥è¨˜
FindBugs ã® @NonNull ã‚¢ãƒŽãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ã§å¼•æ•°ã‚„æˆ»ã‚Šå€¤ãŒ null ã§ãªã„ã“ã¨ã‚’æ˜Žç¤ºã™ã‚‹ã¨ã€å¯èªæ€§ã‚‚ã‚ˆããªã‚‹ã—ã€é–“é•ã£ã¦ null ã®å¼•æ•°ã‚’æŒ‡å®šã—ãŸã‚Šã€null ã‚’è¿”ã™ã‚³ãƒ¼ãƒ‰ã‚’æ›¸ãã¨ã€FindBugs ã®æŒ‡æ‘˜ãŒå…¥ã‚‹ã®ã§ã€ä¸è¦ãª null ãƒã‚§ãƒƒã‚¯ã®å†—é•·ãªã‚³ãƒ¼ãƒ‰ãŒæ¸›å°‘ã™ã‚‹ã€‚ import edu.umd.cs.findbugs.annotations.NonNull; .. @NonNull public String get(@NonNull String key) { .. return .. } .. é€†ã«ã€ã©ã†ã—ã¦ã‚‚ null ã®å¼•æ•°æŒ‡å®šã‚„ null ã®æˆ»ã‚Šå€¤ãŒç™ºç”Ÿã™ã‚‹å ´åˆã¯ ï¼ CheckForNull ã‚¢ãƒŽãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ã‚’ä»˜ã‘ã¦ null ãƒã‚§ãƒƒã‚¯ã‚³ãƒ¼ãƒ‰ã‚’æ›¸ãã‚ˆã†ã«æ˜Žç¤ºã™ã‚‹ã“ã¨ãŒã§ãã‚‹ã€‚ã“ã¡ã‚‰ã¯ null ãƒã‚§ãƒƒã‚¯ãŒãªã„ã¨ FindBugs ãŒæŒ‡æ‘˜ã—ã¦ãã‚Œã‚‹ã€‚ impor
decoy2004 2014/08/08
ã€ŽFindBugs ã® @NonNull ã‚¢ãƒŽãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ã§å¼•æ•°ã‚„æˆ»ã‚Šå€¤ãŒ null ã§ãªã„ã“ã¨ã‚’æ˜Žç¤ºã™ã‚‹ã¨ã€é–“é•ã£ã¦ null ã®å¼•æ•°ã‚’æŒ‡å®šã—ãŸã‚Šã€null ã‚’è¿”ã™ã‚³ãƒ¼ãƒ‰ã‚’æ›¸ãã¨ã€FindBugs ã®æŒ‡æ‘˜ãŒå…¥ã‚‹ã€

java

FingBugs

null

annotation
ãƒªãƒ³ã‚¯
1