java.io.File lastModified()

Description

On this document we will be showing a java example on how to use the lastModified() method of File Class. This method returns the time that the file denoted by this abstract pathname was last modified.

Where it is required to distinguish an I/O exception from the case where 0L is returned, or where several attributes of the same file are required at the same time, or where the time of last access or the creation time are required, then the Files.readAttributes method may be used.

Throws:

SecurityException – If a security manager exists and its SecurityManager.checkRead(java.lang.String) method denies read access to the file.

Method Syntax

public long lastModified()

Method Argument

Data Type Parameter Description
N/A N/A N/A

Method Returns

This method returns a long, representing the time the file was last modified, measured in milliseconds since the epoch (00:00:00 GMT, January 1, 1970), or 0L if the file does not exist or if an I/O.

Compatibility

Requires Java 1.0 and up

Java File lastModified() Example

Below is a java code┬ádemonstrates the use of lastModified()┬ámethod of File class. The example presented might be simple however it shows the behaviour of the lastModified()┬ámethod of File class. The return value of lastModified() method is a long which doesn’t make sense on it’s raw format, thus we have used methods of Calendar class to convert it into more meaningful format.

Sample Output

Below is the sample output when you run the above example.

java lang File lastModified() example output

Suggested Reading List

References