Name: asR10013 Date: 05/16/2000



    In the following sample code java.io.File object is created for
nonexistent directory "test.java/". The test output shows that the created
object represent a file and a directory simultaneously (both isFile()
and isDirectory return true). The FileInputStream created with this
File object reads content of file test.java whereas
FileInputStream("test.java/") throws java.io.FileNotFoundException
(see output below).

    Under Solaris jdk1.3.0Z the same behavior is observed, except
FileInputStream("test.java/") does not throws java.io.FileNotFoundException
but creates nonfunctional object instead.

Note: the source file should be named 'test.java'
-------------------------------- test.java----------------------------
import java.io.*;

class test {
    public static void main(String args[]) throws Exception {
String filename = "test.java/";
int b;

File f = new File(filename);
System.out.println("f.exists() "+f.exists());
        System.out.println("f.isFile() "+f.isFile());
System.out.println("f.isDirectory() "+f.isFile());
        System.out.println("f.canRead() "+f.canRead());

FileInputStream fis1 = new FileInputStream(f);
while ((b=fis1.read())>0) System.out.write(b);

FileInputStream fis2 = new FileInputStream(filename);
while ((b=fis1.read())>0) System.out.write(b);
    }
}
-------------------------------- output ------------------------------
$ java -version
java version "1.3.0beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0beta-b03)
Java HotSpot(TM) Client VM (build 1.3.0beta-b02, mixed mode)
$ java test
f.exists() true
f.isFile() true
f.isDirectory() true
f.canRead() true
import java.io.*;

class test {
    public static void main(String args[]) throws Exception {
String filename = "test.java/";
int b;

File f = new File(filename);
System.out.println("f.exists() "+f.exists());
        System.out.println("f.isFile() "+f.isFile());
System.out.println("f.isDirectory() "+f.isFile());
        System.out.println("f.canRead() "+f.canRead());

FileInputStream fis1 = new FileInputStream(f);
while ((b=fis1.read())>0) System.out.write(b);

FileInputStream fis2 = new FileInputStream(filename);
while ((b=fis1.read())>0) System.out.write(b);
    }
}

Exception in thread "main" java.io.FileNotFoundException: test.java/ (Not a directory)
        at java.io.FileInputStream.open(Native Method)
        at java.io.FileInputStream.<init>(FileInputStream.java:64)
        at test.main(test.java:17) while ((b=fis1.read())>0) System.out.write(b);
}
====================================================================== }

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