Question: difference between current and previous version of java

title: Java version history
text: Library improvements Regular expressions modeled after Perl regular expressions Exception chaining allows an exception to encapsulate original lower - level exception Internet Protocol version 6 ( IPv6 ) support Non-blocking IO ( named New Input / Output , NIO ) ( specified in JSR 51 ) Logging API ( specified in JSR 47 ) Image I / O API for reading and writing images in formats like JPEG and PNG Integrated XML parser and XSLT processor ( JAXP ) ( specified in JSR 5 and JSR 63 ) Integrated security and cryptography extensions ( JCE , JSSE , JAAS ) Java Web Start included ( Java Web Start was first released in March 2001 for J2SE 1.3 ) ( specified in JSR 56 ) Preferences API ( java. util. prefs )