updated convert collection to array using java 8 techniques
updated find element in array to use java 8 features
updated random number to use java 8 features
updated max value in array to use java 8 stream
updated min value in array to use java 8 stream
updated sort array example to use java features
added average from array example
updated calcite date time difference to use java 8 date time api
updated calculate leap year with java 8 date time api
updated compare two dates with java 8 date time api
updated current quarter with java 8 date time api
updated first day in the year using Java 8 date time API
updated generate random number using Java 8 date time API
updated parse date example using Java 8 date time API
formatting
updated days between days between dates using Java 8 date time API
updated  hours between between dates using Java 8 date time API
updated  minutes between between dates using Java 8 date time API
updated  months between between dates using Java 8 date time API
updated  seconds between between dates using Java 8 date time API