实例 Java 日期格式 yyyy-MM-dd

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import java.time.LocalDateTime;  // Import the LocalDateTime class
import java.time.format.DateTimeFormatter;  // Import the DateTimeFormatter class
public class Main {
  public static void main(String[] args) {  
    LocalDateTime myDateObj = LocalDateTime.now();  
    System.out.println("Before formatting: " + myDateObj);  
    DateTimeFormatter myFormatObj = DateTimeFormatter.ofPattern("dd-MM-yyyy HH:mm:ss");  
    
    String formattedDate = myDateObj.format(myFormatObj);  
    System.out.println("After formatting: " + formattedDate);  
  }  
}  
                    

输出结果

Before Formatting: 2025-03-15T03:22:57.197536
After Formatting: 15-03-2025 03:22:57