Finding strings in a text file?

Question

Hi! i'm learning to read text files. what i want to do with this program is to find word 1-3, 2-4, 3-5... and write them in a system.out.println. i found a program that opens files and count words, lines and characters and tried to adjust it do find three-word strings.
i can compilate (hope that word exists) but when i run it, it says: Exception in thread "main" java.lang.NoSuchMethodError: main
anyone who knows what this could depend on?
This is what the code looks like:
import java.io.*;
import java.io.*;
import java.util.*; //tillagd f�r att removeFirst4 skall funka
import javax.swing.*; //tillagd f�r att removeFirst4 skall fungera
import java.util.regex.Pattern;
import java.util.regex.Matcher;
import java.lang.*;
import javax.swing.*;
public class AttLaesaEnFil2 {
     private static void samla(String name, BufferedReader in) throws
     IOException {
     String a;
     WordExtractor b;
String c = " ";
String d;
WordExtractor e;
String f;
String g;
WordExtractor h;
String i;
String j;
String k;
String l;
String line;
do {
               line = in.readLine();
               if (line != null)
b = new WordExtractor(line);
     c = b.getFirst();
     d = b.getRest();
     e = new WordExtractor(d);
     f = e.getFirst();
     g = e.getRest();
     h = new WordExtractor(g);
     i = h.getFirst();
     j = h.getRest();
     k = c + f + i;
     l = c + " " + f + " " + i;
     System.out.println("The first three words are: " + l);
     a = b.getRest();
while (line != null);
          System.out.println("Klart!");
          private static void samla(String fileName) {
          BufferedReader in = null;
          try {
               FileReader fileReader = new FileReader(fileName);
               in = new BufferedReader(fileReader);
               samla(fileName, in);
          } catch (IOException ioe) {
               ioe.printStackTrace();
          } finally {
               if (in != null) {
                    try {
                         in.close();
                    } catch (IOException ioe) {
                         ioe.printStackTrace();
     private static void samla(String streamName, InputStream input) {
          try {
               InputStreamReader inputStreamReader = new InputStreamReader(input);
               BufferedReader in = new BufferedReader(inputStreamReader);
               samla(streamName, in);
               in.close();
          } catch (IOException ioe) {
               ioe.printStackTrace();
Thanx in advance!

Answer 1

this may be a stupid question but i'll give it a
shot. ...do i replace my private static void with
public static void or do a add the public?Whether you replace one of your methods or create a new one is up to you, but you have to have a method with this exact signature:
public static void main(String[] foo) {
}(The variable name can be different of course)