Delete duplicate strings in string array

This will work

array = new HashSet<String>(Arrays.asList(array)).toArray(new String[0]);

or just use a HashSet instead of an array.

Proposed solution does not keep the order of the elements. If you use Java 8 or higher and want to maintain the order you can use streams as follows:

array = Arrays.stream(array).distinct().toArray(String[]::new);

Full example: https://www.javacodeexamples.com/java-string-array-remove-duplicates-example/849