Here are the instructions: Prompt the user to enter a sentence. Output that sent

Question

Here are the instructions:

Prompt the user to enter a sentence. Output that sentence with spacing corrected and with letters corrected for capitalization. In other words, in the output sentence, all strings of two or more blanks should be compressed to a single blank. The sentence should start with an upper case letter but should contain no other uppercase letters. Do not worry about proper names. Treat a line break as if it were a blank, in that a line break and any number of blanks are compressed to a single blank.. Assume the sentence ends with a period and contain no other periods. For example, the input:

the Answer to life, the Universe, and everything
IS 42

should produce the following output:

The answer to life, the universe, and everything is 42.

I'm trying to use .split() to split up the string into an array and then fix whitespace and capitalization, but it wont work. I'm asking for the code.
Thanks.

Explanation / Answer

/**
*

Operations on Strings that contain Sentence.

*
*

This class tries to handle null input gracefully.
* An exception will not be thrown for a null input.
* Each method documents its behaviour in more detail.

* @author deepu
*/
public class SentenceUtil {

public SentenceUtil(){
super();
}

/**
*

Capitalizes all the . separated Sentences in a String.
* Only the first letter of each Sentence is changed.

*
*

A null input String returns null.
* Capitalization uses the unicode title case, normally equivalent to
* upper case.

*
*

*
* @param str the String to capitalize, may be null
* @return capitalized String, null if null String input
*/
public static String capitalize(String string){

if(string == null)
return string;

String[] stArray = string.split("\.");
StringBuffer sb = new StringBuffer();

for(int i=0;i String temp = stArray[i];
temp = temp.trim();
sb.append(temp.substring(0,1).toUpperCase());
sb.append(temp.substring(1,temp.length()).toLowerCase());
sb.append(". ");
}

return sb.toString();
}
/**
* Main Method for testing.
* @param args
*/
public static void main(String[] args) {
System.out.println("REQUEST: hELLO hOW Are yOu. i Am fine Here.");
System.out.println("RESULT: "+SentenceUtil.capitalize("hELLO hOW Are yOu. i Am fine Here."));
System.out.println("REQUEST: the Answer to life, the Universe, and everything IS 42");
System.out.println("RESULT: "+SentenceUtil.capitalize("the Answer to life, the Universe, and everything IS 42"));
}

}

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