{"id":18183,"date":"2022-10-29T20:23:46","date_gmt":"2022-10-29T14:53:46","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-what-does-the-symbol-curly-brace-indicate-in-java\/"},"modified":"2022-10-29T20:23:46","modified_gmt":"2022-10-29T14:53:46","slug":"solved-what-does-the-symbol-curly-brace-indicate-in-java","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-what-does-the-symbol-curly-brace-indicate-in-java\/","title":{"rendered":"[Solved] What does the ‘{‘ symbol (curly-brace) indicate in Java?"},"content":{"rendered":"

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The question from your instructor seems not so great because there isn’t a single unified meaning of the { symbol in Java.<\/p>\n

In the context of a statement, the { symbol is used to denote the start of a block statement. This accounts for all the uses of { with if statements, while loops, for loops, do … while loops, switch statements, etc., which technically only apply to a single statement but are often used with block statements:<\/p>\n

if (x == 0) {\n    statementOne();\n    statementTwo();\n}\n<\/code><\/pre>\n
In the context of a method or type (class\/interface\/enum\/annotation), the { symbol is used to denote the beginning of the body of a class or a method:<\/p>\n
public class NewClass {\n    ...\n\n    public void foo() {\n         ...\n    }\n}\n<\/code><\/pre>\n
It can also be used inside a class to declare an initializer or static initializer block:<\/p>\n
class MyClass() {\n    static int x;\n    static {\n        x = somethingHorrible();\n    }\n};\n<\/code><\/pre>\n
In the context of an array literal, the { symbol is used to denote the beginning of the list of elements used inside that literal:<\/p>\n
int[] arr = new int[] {1, 3, 7};\n<\/code><\/pre>\n
Each of these uses of the open brace symbol is different from all the others. In fact, the language would work just fine if we used a different symbol for each of these different contexts.<\/p>\n
I think that the best answer to your question is that { is used in contexts where some group of things will be treated as a unit, whether it’s a block statement (many statements treated as a single one), a class (many methods and fields treated as a single object), a method (many statements treated as a single unified piece of code), an initializer (many things that need to be done at once), etc.<\/p>\n
In the majority of these contexts, as the comments have pointed out, the brace introduces a new scope. Statement blocks, class bodies, initializer bodies, and function bodies all introduce a new scope, and that is definitely something important to keep in mind. (Array initialization doesn’t do this, though.)<\/p>\n<\/p><\/div>\n
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solved What does the ‘{‘ symbol (curly-brace) indicate in Java? <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] The question from your instructor seems not so great because there isn’t a single unified meaning of the { symbol in Java. In the context of a statement, the { symbol is used to denote the start of a block statement. This accounts for all the uses of { with if statements, while loops, … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[323,380],"class_list":["post-18183","post","type-post","status-publish","format-standard","hentry","category-solved","tag-java","tag-parsing"],"yoast_head":"\n[Solved] What does the '{' symbol (curly-brace) indicate in Java? - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-what-does-the-symbol-curly-brace-indicate-in-java\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] What does the '{' symbol (curly-brace) indicate in Java? - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] The question from your instructor seems not so great because there isn’t a single unified meaning of the { symbol in Java. 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