{"id":17002,"date":"2024-03-15T14:04:29","date_gmt":"2024-03-15T14:04:29","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-write-java-code-for-converting-time-formats\/"},"modified":"2025-08-07T07:41:27","modified_gmt":"2025-08-07T07:41:27","slug":"how-to-write-java-code-for-converting-time-formats","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-write-java-code-for-converting-time-formats\/","title":{"rendered":"How to write Java code for converting time formats?"},"content":{"rendered":"

There are two main aspects involved in Java time format conversion: date formatting and date parsing. Here are two example codes.<\/p>\n

    \n
  1. Formatting the date:<\/li>\n<\/ol>\n
    import<\/span> java.text.SimpleDateFormat;\r\nimport<\/span> java.util.Date;\r\n\r\npublic<\/span> class<\/span> DateFormatExample<\/span> {\r\n    public<\/span> static<\/span> void<\/span> main<\/span>(String[] args)<\/span> {\r\n        \/\/ \u5f53\u524d\u65e5\u671f<\/span>\r\n        Date<\/span> currentDate<\/span> =<\/span> new<\/span> Date<\/span>();\r\n        \r\n        \/\/ \u5b9a\u4e49\u65e5\u671f\u683c\u5f0f<\/span>\r\n        SimpleDateFormat<\/span> sdf<\/span> =<\/span> new<\/span> SimpleDateFormat<\/span>(\"yyyy-MM-dd HH:mm:ss\"<\/span>);\r\n        \r\n        \/\/ \u683c\u5f0f\u5316\u65e5\u671f<\/span>\r\n        String<\/span> formattedDate<\/span> =<\/span> sdf.format(currentDate);\r\n        \r\n        \/\/ \u8f93\u51fa\u683c\u5f0f\u5316\u540e\u7684\u65e5\u671f<\/span>\r\n        System.out.println(\"Formatted Date: \"<\/span> + formattedDate);\r\n    }\r\n}\r\n<\/code><\/pre>\n
      \n
    1. Date parsing:<\/li>\n<\/ol>\n
      import<\/span> java.text.ParseException;\r\nimport<\/span> java.text.SimpleDateFormat;\r\nimport<\/span> java.util.Date;\r\n\r\npublic<\/span> class<\/span> DateParseExample<\/span> {\r\n    public<\/span> static<\/span> void<\/span> main<\/span>(String[] args)<\/span> {\r\n        \/\/ \u5b9a\u4e49\u65e5\u671f\u5b57\u7b26\u4e32<\/span>\r\n        String<\/span> dateString<\/span> =<\/span> \"2021-01-01 12:00:00\"<\/span>;\r\n        \r\n        \/\/ \u5b9a\u4e49\u65e5\u671f\u683c\u5f0f<\/span>\r\n        SimpleDateFormat<\/span> sdf<\/span> =<\/span> new<\/span> SimpleDateFormat<\/span>(\"yyyy-MM-dd HH:mm:ss\"<\/span>);\r\n        \r\n        try<\/span> {\r\n            \/\/ \u89e3\u6790\u65e5\u671f\u5b57\u7b26\u4e32<\/span>\r\n            Date<\/span> parsedDate<\/span> =<\/span> sdf.parse(dateString);\r\n            \r\n            \/\/ \u8f93\u51fa\u89e3\u6790\u540e\u7684\u65e5\u671f<\/span>\r\n            System.out.println(\"Parsed Date: \"<\/span> + parsedDate);\r\n        } catch<\/span> (ParseException e) {\r\n            e.printStackTrace();\r\n        }\r\n    }\r\n}\r\n<\/code><\/pre>\n
      In the examples above, the SimpleDateFormat class is used to define date formats, formatting dates using the format() method and parsing dates using the parse() method. In actual use, different date formats can be defined according to one’s own needs.<\/p>\n","protected":false},"excerpt":{"rendered":"
      There are two main aspects involved in Java time format conversion: date formatting and date parsing. Here are two example codes. Formatting the date: import java.text.SimpleDateFormat; import java.util.Date; public class DateFormatExample { public static void main(String[] args) { \/\/ \u5f53\u524d\u65e5\u671f Date currentDate = new Date(); \/\/ \u5b9a\u4e49\u65e5\u671f\u683c\u5f0f SimpleDateFormat sdf = new SimpleDateFormat(“yyyy-MM-dd HH:mm:ss”); \/\/ \u683c\u5f0f\u5316\u65e5\u671f […]<\/p>\n","protected":false},"author":14,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[453,1402,299,1404,1403],"class_list":["post-17002","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-development","tag-guide","tag-programming","tag-technology","tag-tutorial"],"yoast_head":"\nHow to write Java code for converting time formats? - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn about how to write java code for converting time formats?. 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