Write a Java program that searches for a specific element in an array of integers and returns its index. If the element is not found, indicate that it's not in the array. Exercise 5: Array Copy ...

Exercise 20: Array Sorting with Custom Comparator Write a Java program that sorts an array of custom objects (e.g., objects with a name and age) using a custom comparator.

J2SE 5 provided significant new language features that made Java significantly easier to use and more expressive than it had ever been.