// strings/StartEnd.java
// (c)2017 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
import java.util.regex.*;

public class StartEnd {
 public static String input =
 "As long as there is injustice, whenever a\n" +
 "Targathian baby cries out, wherever a distress\n" +
 "signal sounds among the stars " +
 "... We'll be there.\n"+
 "This fine ship, and this fine crew ...\n" +
 "Never give up! Never surrender!";
 private static class Display {
 private boolean regexPrinted = false;
 private String regex;
 Display(String regex) { this.regex = regex; }
 void display(String message) {
 if(!regexPrinted) {
 System.out.println(regex);
 regexPrinted = true;
 }
 System.out.println(message);
 }
 }
 static void examine(String s, String regex) {
 Display d = new Display(regex);
 Pattern p = Pattern.compile(regex);
 Matcher m = p.matcher(s);
 while(m.find())
 d.display("find() '" + m.group() +
 "' start = "+ m.start() + " end = " + m.end());
 if(m.lookingAt()) // No reset() necessary
 d.display("lookingAt() start = "
 + m.start() + " end = " + m.end());
 if(m.matches()) // No reset() necessary
 d.display("matches() start = "
 + m.start() + " end = " + m.end());
 }
 public static void main(String[] args) {
 for(String in : input.split("\n")) {
 System.out.println("input : " + in);
 for(String regex : new String[]{"\\w*ere\\w*",
 "\\w*ever", "T\\w+", "Never.*?!"})
 examine(in, regex);
 }
 }
}
/* Output:
input : As long as there is injustice, whenever a
\w*ere\w*
find() 'there' start = 11 end = 16
\w*ever
find() 'whenever' start = 31 end = 39
input : Targathian baby cries out, wherever a distress
\w*ere\w*
find() 'wherever' start = 27 end = 35
\w*ever
find() 'wherever' start = 27 end = 35
T\w+
find() 'Targathian' start = 0 end = 10
lookingAt() start = 0 end = 10
input : signal sounds among the stars ... We'll be
there.
\w*ere\w*
find() 'there' start = 43 end = 48
input : This fine ship, and this fine crew ...
T\w+
find() 'This' start = 0 end = 4
lookingAt() start = 0 end = 4
input : Never give up! Never surrender!
\w*ever
find() 'Never' start = 0 end = 5
find() 'Never' start = 15 end = 20
lookingAt() start = 0 end = 5
Never.*?!
find() 'Never give up!' start = 0 end = 14
find() 'Never surrender!' start = 15 end = 31
lookingAt() start = 0 end = 14
matches() start = 0 end = 31
*/