Java Sorting Array, List

Java provides an interface java.util.Collections which provides way to sort List, Arraylist etc. We can sort an array of String by first transforming it to a List first then applying Collection.sort() method then again transforming from List to String array. Here is a practical example of this. Hope this will be helpful to you.

String friends[] = {"Tuhin", "Sumon","Habib","Shishir","Kiser","Zimi","Lizzie"};
System.out.println(Arrays.toString(friends));
List tempList = Arrays.asList(friends);
System.out.println(tempList);
Collections.sort(tempList);
System.out.println(tempList);
friends = (String[]) tempList.toArray(new String[0]);
System.out.println(Arrays.toString(friends));

This code block if execute will generate output like ...

[Tuhin, Sumon, Habib, Shishir, Kiser, Zimi, Lizzie]
[Tuhin, Sumon, Habib, Shishir, Kiser, Zimi, Lizzie]
[Habib, Kiser, Lizzie, Shishir, Sumon, Tuhin, Zimi]
[Habib, Kiser, Lizzie, Shishir, Sumon, Tuhin, Zimi]