Question

use eclipse to do

Using String -- continued
Intro To Java (Lab) Northwestern Polytechnic University Dr. Nels Vander Zanden 4

• After program on previous slide is working, add support to handle the following cases: o No ‘*’ character is found (print a message indicating this) o Only one ‘*’ character is found (print a message to indicate this)
Compare two Strings


 Write a program to see if two Strings are the same

e.g. String startMonth = "June"; String endMonth = "June";

These two Strings are equal

e.g. String startMonth = "March"; String endMonth = "June";

These two Strings are not equal

Answer 1

public class Test {

        public static void main(String args[]) {

                String data = "Walk*this*way";

                if (!data.contains("*")) {
                        System.out.println("String does not contain *.");
                } else if (data.indexOf("*") == data.lastIndexOf("*")) {
                        System.out.println("String has only one *.");
                } else {

                        // with use of substring.
                        String result1 = data.substring(data.indexOf("*") + 1, data.lastIndexOf("*"));
                        System.out.println(result1);

                        // without use of substring.
                        String result2 = "";
                        boolean started = false;
                        for (char c : data.toCharArray()) {
                                if (c == '*') {
                                        started = !started;
                                } else if (started) {
                                        result2 += c;
                                }
                        }
                        System.out.println(result2);
                }
                
                
                String startMonth = "June"; String endMonth = "June";
                
                if(startMonth.equals(endMonth)) {
                        System.out.println("Both strings are equal.");
                } else {
                        System.out.println("Both strings are not equal.");
                }
        }

}

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