Java for Mac OS X 10.5 Update 4
Java for Mac OS X 10.5 Update 4 delivers improved reliability, security, and compatibility for Java SE 6, J2SE 5.0 and J2SE 1.4.2 on Mac OS X 10.5.7 and later.
This release updates Java SE 6 to version 1.6.0_13, J2SE 5.0 to version 1.5.0_19, and J2SE 1.4.2 to 1.4.2_21.
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For more details on this update, please visit this website :http://support.apple.com/kb/HT3581
For explanation of what a SHA1 digest is, please visit this website: About SHA1 digest
For information on the security content of this update, please visit this website: Apple Security Updates