{"@context":"http://schema.org","@type":"Question","@id":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-","text":"Что выведет данный код при выполнении:\n\u003cpre\u003e\u003ccode class\u003d\u0027java\u0027\u003e\nInteger foo \u003d 1000;\nInteger bar \u003d 1000;\n\nSystem.out.println(foo \u0026lt;\u003d bar);\nSystem.out.println(foo \u0026gt;\u003d bar);\nSystem.out.println(foo \u003d\u003d bar);\n\u003c/code\u003e\u003c/pre\u003e","headline":"Что выведет данный код при выполнении:\n\u003cpre\u003e\u003ccode class\u003d\u0027java\u0027\u003e\nInteger foo \u003d 1000;\nInteger bar \u003d 1000;\n\nSyste","learningResourceType":["programming test","programming course","programming question"],"isPartOf":{"@type":"Course","@id":"https://codegalaxy.io/courses/java-ru","url":"https://codegalaxy.io/courses/java-ru","name":"Java Quiz","description":"Java - объектно-ориентированный кросс-платформенный язык программирования, предназначенный для удобства чтения и интероперабельности. Java обычно читается как легкая и простая версия языка Си++. Тем не менее, Java может использоваться как полная версия для создания приложений, которые могут работать на всех платформах, поддерживающих Java, без необходимости перекомпиляции. В 2020 году Java является самым популярным языком программирования, с которым работают более 9 миллионов разработчиков. \u003cbr\u003e\nЭтот обучающий курс полностью посвящен \u003cstrong\u003eJava языку\u003c/strong\u003e, где вы можете проверить свои знания и ответить на \u003cstrong\u003e вопросы интервью по Java\u003c/strong\u003e. Вы ответите на теоретические и практические вопросы, которые проверяют ваши навыки на понимание \u003cstrong\u003e Java-кода\u003c/strong\u003e и поиска ошибок.\n\u003cbr\u003e\nВы можете вернуться к этому java курсу когда захотите, так как он постоянно обновляется и добавляются новые вопросы и задачки!\n\nПереведено с помощью www.DeepL.com/Translator (бесплатная версия)","provider":{"@type":"Organization","@id":"https://codegalaxy.io","name":"CodeGalaxy","logo":{"@type":"ImageObject","url":"https://codegalaxy.io/app/assets/images/g_code.png","height":"513","width":"513"},"description":"Project aimed to provide new ways in learning programming languages and preparing for the interview."},"image":{"@type":"ImageObject","url":"https://codegalaxy.io/app/assets/images/fb/16x9/share-java-ru.png","height":"630","width":"1200"}},"image":{"@type":"ImageObject","url":"https://codegalaxy.io/app/assets/images/fb/16x9/share-java-ru.png","height":"630","width":"1200"},"answerCount":5,"potentialAction":[{"@type":"AssessAction","object":{"@type":"Question","@id":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-"}},{"@type":"ChooseAction","actionOption":[{"@type":"Answer","@id":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-#20303","url":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-#20303","text":"false\u003cbr\u003e\nfalse\u003cbr\u003e\ntrue","dateCreated":"2020-02-06"},{"@type":"Answer","@id":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-#20304","url":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-#20304","text":"true\u003cbr\u003e\ntrue\u003cbr\u003e\ntrue","dateCreated":"2020-02-06"},{"@type":"Answer","@id":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-#20305","url":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-#20305","text":"true\u003cbr\u003e\ntrue\u003cbr\u003e\nfalse","dateCreated":"2020-02-06"},{"@type":"Answer","@id":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-#20306","url":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-#20306","text":"false\u003cbr\u003e\nfalse\u003cbr\u003e\nfalse","dateCreated":"2020-02-06"}],"object":{"@type":"Answer","@id":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-#20305","url":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-#20305","text":"true\u003cbr\u003e\ntrue\u003cbr\u003e\nfalse","dateCreated":"2020-02-06"}}],"audience":{"@type":"EducationalAudience","audienceType":["developers","programmers"],"educationalRole":["Specialist","Student"],"alternateName":"Java Programmers","name":"Java Developers","sameAs":["https://en.wikipedia.org/wiki/Programmer","https://en.wikipedia.org/wiki/Software_developer","https://en.wikipedia.org/wiki/Software_engineer","https://en.wikipedia.org/wiki/Web_developer"]},"dateCreated":"2020-02-06","acceptedAnswer":[{"@type":"Answer","@id":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-#js-expander-trigger","url":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-#js-expander-trigger","text":"The Java compiler evaluated an expression of \u003cb\u003eInteger \u003csomevariable\u003e \u003d \u003csomeintvalue\u003e;\u003c/b\u003e to \u003cb\u003eInteger \u003csomevariable\u003e \u003d Integer.valueOf(\u003csomeintvalue\u003e);\u003c/b\u003e.\u003cbr\u003e\nStarting from JSE5.0 the compiler is caching Integer values between -128..127 (\u003cb\u003ebyte\u003c/b\u003e size). Hence,  if the number is in the range mentioned above, the \u003cb\u003eInteger.valueOf()\u003c/b\u003e method will always return an already existing object, corresponding to the requested int number, from a pre-generated Integer objects array. Since 1000 is not in the mentioned range, \u003cb\u003efoo\u003c/b\u003e and \u003cb\u003ebar\u003c/b\u003e are pointing to different, separately created objects\u003cbr\u003e\n\nThe compiler evaluates the foo \u0026lt;\u003d bar; and foo \u0026gt;\u003d bar; expressions to foo.intValue() \u0026lt;\u003d bar.intValue() and foo.intValue() \u0026gt;\u003d bar.intValue() which is equivalent to 1000 \u0026lt;\u003d 1000 and 1000 \u0026gt;\u003d 1000, which are both true.","about":{"@type":"Question","@id":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-"},"upvoteCount":1,"dateCreated":"2020-02-06"},{"@type":"Answer","@id":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-#20305","url":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-#20305","text":"true\u003cbr\u003e\ntrue\u003cbr\u003e\nfalse","dateCreated":"2020-02-06","upvoteCount":1}],"suggestedAnswer":[{"@type":"Answer","@id":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-#20303","url":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-#20303","text":"false\u003cbr\u003e\nfalse\u003cbr\u003e\ntrue","dateCreated":"2020-02-06","upvoteCount":0},{"@type":"Answer","@id":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-#20304","url":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-#20304","text":"true\u003cbr\u003e\ntrue\u003cbr\u003e\ntrue","dateCreated":"2020-02-06","upvoteCount":0},{"@type":"Answer","@id":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-#20306","url":"https://codegalaxy.io/courses/java-ru/questions/da688b1191274099b7e8d6c0d3a9dfd1/chto-vyvedet-dannyj-kod-pri-vypolnenii-integer-foo-1000-integer-bar-1000-system-#20306","text":"false\u003cbr\u003e\nfalse\u003cbr\u003e\nfalse","dateCreated":"2020-02-06","upvoteCount":0}]}