What does the method 'split()' do in Java?

• A. Joins multiple strings
• B. Divides a string into an array based on a delimiter
• C. Counts the number of characters in a string
• D. Converts characters to uppercase

Answer: (B)

The method 'split()' in Java is used to divide a string into an array of substrings based on a specified delimiter. When 'split()' is called, it takes a regular expression as an argument to determine where the string should be divided. For example, if you have a string containing words separated by spaces or commas and you apply the 'split()' method with a space or comma as the delimiter, it will return an array containing each word as an individual element.

This functionality is particularly useful for parsing and manipulating strings in various applications, such as reading data from a CSV file, processing user input, or breaking down sentences into words for further analysis. The resulting array can then be used for iterations, further processing, or any operations required on each substring.

The other options do not accurately describe the purpose of the 'split()' method:

• Joining multiple strings would require a different method, such as 'concat()' or using a StringBuilder.

• Counting characters can be achieved using the 'length()' method.

• Converting characters to uppercase is done using the 'toUpperCase()' method.

Thus, the correct understanding of 'split()' emphasizes its role in breaking a string into substrings based on specified