Accessing Files and Directories - Beginning Java 2 SDK - page 363

Now we need to modify our TryFile2.java code as follows:
import java.io.File;
import java.io.FilenameFilter;
import java.util.Date; // For the Date class
public class TryFile3 {
public static void main(String[] args) {
// Create an object that is a directory
File myDir = new File("C:/j2sdk1.4.0/src/java/io");
System.out.println(myDir.getAbsolutePath()
+ (myDir.isDirectory() ? " is " : " is not ")
+ "a directory");
System.out.println("The parent of " + myDir.getName() + " is "
+ myDir.getParent());
// Define a filter for java source files beginning with F
FilenameFilter select = new FileListFilter("F", "java");
// Get the contents of the directory
File[] contents = myDir.listFiles(select);
// List the contents
if (contents != null) {
System.out.println("\nThe " + contents.length
+ " matching items in the directory, "
+ myDir.getName() + ", are:");
for (int i = 0; i < contents.length; i++) {
System.out
.println(contents[i] + " is a "
+ (contents[i].isDirectory() ? "directory" : "file")
+ " last modified "
+ new Date(contents[i].lastModified()));
}
} else {
System.out.println(myDir.getName() + " is not a directory");
}
return;
}
}
It is best to continue with our numbering convention and call the above script TryFile3.java . When
you run this code, you should get something like the following:
C:\j2sdk1.4.0\src\java\io is a directory
The parent of io is C:\j2sdk1.4.0\src\java
The 15 matching items in the directory, io, are:
C:\j2sdk1.4.0\src\java\io\File.java is a file last modified Sat Oct 20 01:13:38
BST 2001