Java code to get all words with character sum = 100 in a dictionary

WordTotal100.java

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

public class WordTotal100 {
	public static void main(String[] args) {
		// read big.txt file
		try {
			String fileStr = readFileAsString("words.txt");
			String[] words = fileStr.split("\\r?\\n");
			int count = 0;			
			for(String s: words) {
				if(stringToInt2(s.trim()) == 100) {
					System.out.println(s);
					count++;
				}
			}
			System.out.println("number of words with 100 sum: " + count);

		} catch (IOException e) {
			e.printStackTrace();
		}		
	}
	
	// convert file into string
	private static String readFileAsString(String filePath)
	throws java.io.IOException{
		StringBuffer fileData = new StringBuffer(1000);
		BufferedReader reader = new BufferedReader(
				new FileReader(filePath));
		char[] buf = new char[1024];
		int numRead=0;
		while((numRead=reader.read(buf)) != -1){
			String readData = String.valueOf(buf, 0, numRead);
			fileData.append(readData);
			buf = new char[1024];
		}
		reader.close();
		return fileData.toString();
	}

	public static int stringToInt2(String word) {
		int sum = 0;
		char[] chars = word.toLowerCase().toCharArray(); 
		for(char c: chars)
			sum += (int)c;
		return sum - (96 * chars.length);
	}
}