String.format("%08x", (System.currentTimeMillis() % 4294967295l))转python
时间: 2023-12-09 10:07:13 浏览: 25
Null refers to the concept of having no value or absence of data in a programming language or database. It is typically used to indicate that a variable or field is not assigned or does not have a value. In some programming languages, null is equivalent to false or zero, while in others, it is a distinct value that represents the absence of a value. In databases, null is used to represent missing or unknown data in a field.
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System.currentTimeMillis() % 4294967295l转python代码
As an AI language model, I do not have emotions or feelings. However, if you are referring to the meaning of null, it generally refers to a value that represents no value or absence of a value. In programming, null is often used to indicate an uninitialized or undefined variable or object.
String.valueOf(System.currentTimeMillis())怎么转回去
根据提供的引用内容,`String.valueOf(System.currentTimeMillis())`返回的是当前时间的字符串表示。如果要将这个字符串转回去,可以使用`Long.parseLong()`方法将字符串转换为`long`类型的数值。下面是一个示例代码:
```java
String currentTimeString = String.valueOf(System.currentTimeMillis());
long currentTime = Long.parseLong(currentTimeString);
```
这样就将字符串表示的当前时间转换为了`long`类型的数值。请注意,如果字符串不能被解析为有效的`long`数值,将会抛出`NumberFormatException`异常。