FULL PRODUCT VERSION :
java version "1.8.0_20"
Java(TM) SE Runtime Environment (build 1.8.0_20-b26)
Java HotSpot(TM) 64-Bit Server VM (build 25.20-b23, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
OS X:
Darwin Kernel Version 13.3.0: Tue Jun 3 21:27:35 PDT 2014; root:xnu-2422.110.17~1/RELEASE_X86_64 x86_64

A DESCRIPTION OF THE PROBLEM :
The mime type for .png files as supplied by javax.activation.FileTypeMap and
javax.activation.MimetypesFileTypeMap seems to be missing. When using the getContentType() method from these classes to lookup the mime type for a file name, they return "application/octet-stream" and not "image/png".

REGRESSION. Last worked in version 7u51

ADDITIONAL REGRESSION INFORMATION:
Can confirm the issue does not exist in:

java version "1.7.0_51"
Java(TM) SE Runtime Environment (build 1.7.0_51-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.51-b03, mixed mode)

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Call one of the following methods:

MimetypesFileTypeMap.getDefaultFileTypeMap().getContentType(String);
 FileTypeMap.getDefaultFileTypeMap().getContentType(String);



EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
With a file name ending in ".png", I expect them to return "application/png"
ACTUAL -
With a file name ending in ".png" they return "application/octet-stream"

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
Test Case:


import javax.activation.FileTypeMap;
import javax.activation.MimetypesFileTypeMap;

public class ContentTypeTest {

    public static void main(String... args) throws Exception {
        System.out.printf("Testing Java verision %s\n", System.getProperties().getProperty("java.version"));
        String[] map[] = new String[][]{
            {"foo.png", "image/png",},
            {"foo.gif", "image/gif",},
            {"foo.jpg", "image/jpeg",},
            {"foo.jpeg", "image/jpeg"},
            {"foo.tiff", "image/tiff"}
        };

        for (String pair[] : map) {
            String ex = pair[0];
            String tp = pair[1];
            String mftm = MimetypesFileTypeMap.getDefaultFileTypeMap().getContentType(ex);
            String ftm = FileTypeMap.getDefaultFileTypeMap().getContentType(ex);
            boolean ok = true;
            if (!tp.equals(mftm)) {
                ok = false;
            }
            if (!tp.equals(ftm)) {
                ok = false;
            }
            if (ok) {
                System.out.printf("%s: OK\n", tp);
            } else {
                System.out.printf("%s: ERROR, FileTypeMap = %s, MimetypesFileTypeMap = %s\n", tp, ftm, mftm);
            }
        }
    }

}
---------- END SOURCE ----------