CIS 260 RegEx1.java

Code

/*
    RegEx1.java
    David Klick
    2005-03-30

    Demonstrates regular expression use.
*/

import java.util.regex.*;

public class RegEx1 {
    public static void main(String[] args) {
        String[] sarr = {
            "I do not like green eggs and ham",
            "I do not like them Sam I am",
            "I do not like them here or there",
            "I do not like them anywhere",
            "Imagine", "whatever", "One fish",
            "Two fish", "Red fish", "Blue fish" };
        Pattern p = Pattern.compile("^I.*e$");
        Matcher m;
        System.out.println(p.pattern());
        for (int i=0; i<sarr.length; i++) {
            m = p.matcher(sarr[i]);
            if (m.find()) {
                System.out.println(sarr[i]);
                System.out.println("     " + m.group());
            }
        }

        p = Pattern.compile("I.*e");
        System.out.println(p.pattern());
        for (int i=0; i<sarr.length; i++) {
            m = p.matcher(sarr[i]);
            if (m.find()) {
                System.out.println(sarr[i]);
                System.out.println("     " + m.group());
            }
        }

        p = Pattern.compile("I.*?e");
        System.out.println(p.pattern());
        for (int i=0; i<sarr.length; i++) {
            m = p.matcher(sarr[i]);
            if (m.find()) {
                System.out.println(sarr[i]);
                System.out.println("     " + m.group());
            }
        }

        p = Pattern.compile("ee");
        System.out.println(p.pattern());
        for (int i=0; i<sarr.length; i++) {
            m = p.matcher(sarr[i]);
            if (m.find()) {
                System.out.println(sarr[i]);
                System.out.println("     " + m.group());
            }
        }

        p = Pattern.compile("e");
        System.out.println(p.pattern());
        for (int i=0; i<sarr.length; i++) {
            m = p.matcher(sarr[i]);
            if (m.find()) {
                System.out.println(sarr[i]);
                System.out.println("     " + m.group());
            }
        }

        p = Pattern.compile("e\\b");
        System.out.println(p.pattern());
        for (int i=0; i<sarr.length; i++) {
            m = p.matcher(sarr[i]);
            if (m.find()) {
                System.out.println(sarr[i]);
                System.out.println("     " + m.group());
            }
        }
    }
}