Search for a text in document

Question

How do I search for a particular text and find the number of occurence of this text in a text file?

Answer 1

try this example using regular expressions.
public class Test {
public static void main(String[] args) {
     Pattern p = Pattern.compile("(test)");
     Matcher m = p.matcher("test asjd flkjasd kfjasd klftest asld?kjfaslkdftest aaaaab");
     int count = 0;
     while(m.find()) {
          count++;
     System.out.println(""+ count);