jdbc download jar is corrupted

 http://jdbc.postgresql.org/download/jdbc7.1-1.2.jar has bad format.
Neither winzip nor jar can read the contents. Jar throws an
IllegalArgumentException and winzip says: error [C:/jdbc7_1-1_2.jar]:
start of central directory not found; Zip file corrupt. Possible cause:
file transfer error.

C:\>jar -tf *.jar
java.lang.IllegalArgumentException
        at
java.util.zip.ZipInputStream.getUTF8String(ZipInputStream.java:291)
        at java.util.zip.ZipInputStream.readLOC(ZipInputStream.java:230)

        at
java.util.zip.ZipInputStream.getNextEntry(ZipInputStream.java:75)
        at sun.tools.jar.Main.list(Main.java:736)
        at sun.tools.jar.Main.run(Main.java:193)
        at sun.tools.jar.Main.main(Main.java:904)

C:\>