Name: saC57035 Date: 10/13/98


The FileInputStream.skip(n) method throws IOException if n is negative.
This behavior:
a) violates the general contract of the skip method documented in
   the InputStream javadoc comments (".. If n is negative,
   no bytes are skipped.")
b) works inconsistently with all other InputStream subclasses. All those
   classes return 0 and do nothing if skip(negative) is called.

Here is the test example:
----------------------------------------------------
import java.io.*;

public class Test {
    public static void main(String [] args) {
         FileInputStream f=null;
        try {
          f = new FileInputStream("Test.java");
        } catch (FileNotFoundException e) {
            System.out.println("File not found: Test.java");
            System.exit(0);
        }
        try {
          if (f.skip(-10) == 0)
            System.out.println("OKAY");
          else
            System.out.println("FAILED");
           
        } catch (Throwable e) {
            System.out.println("FAILED: "+e+" thrown");
            e.printStackTrace();
        }
    }
}
----------------------------------------------------
Here is the test output:
----------------------------------------------------
95% java Test
FAILED: java.io.IOException thrown
java.io.IOException
at Test.main(Test.java:13)
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