Question

Text message abbreviation decoder (Java)

(1) Complete the following method:

/**
 * Decodes the text abbreviation.
 *
 * @param textAbbr Text abbreviation.
 * @return The decoded abbreviation if known. Otherwise, returns Unknown.
 */
public static String decTextAbbr(String textAbbr) {
    // FILL IN BODY
}

If the parameter matches a known text message abbreviation, return the unabbreviated form, else return: Unknown. Support two abbreviations:

LOL -- laughing out loud, and

IDK -- I don't know.

For example:

decTextAbbr("LOL")

returns

laughing out loud

(2) Write a testing method to verify this method works for all expected inputs:

/**
 * Runs tests on the decTextAbbr method.
 */
public static void testDecTextAbbr() {
       System.out.println( "decTextAbbr(\"LOL\") expected 'laughing out loud', actual '" 
                + decTextAbbr("LOL") + "'");
       System.out.println( /* FIX ME */);
       System.out.println( /* FIX ME */);
}

Run this test method from the main method to verify the decTextAbbr method is working correctly.

(3) Expand the method to also decode these abbreviations.

• IMHO -- in my humble opinion
• TMI -- too much information
• BFF -- best friends forever
• ROFL -- rolling on floor laughing
• LMK -- let me know

extend the testDecTextAbbr() method to also verify these cases work correctly. When complete, your testDecTextAbbr() method should have at least 6 tests.

TextMsgExpander.java

public class TextMsgExpander {

/* Add your methods here */

public static void main(String[] args) {
}

}

Answer 1

public class TextMsgExpander {

    /**
     * Decodes the text abbreviation.
     *
     * @param textAbbr Text abbreviation.
     * @return The decoded abbreviation if known. Otherwise, returns Unknown.
     */
    public static String decTextAbbr(String textAbbr) {
        if (textAbbr.equals("LOL")) {
            return "laughing out loud";
        } else if (textAbbr.equals("IDK")) {
            return "I don't know";
        } else if (textAbbr.equals("IMHO")) {
            return "in my humble opinion";
        } else if (textAbbr.equals("TMI")) {
            return "too much information";
        } else if (textAbbr.equals("BFF")) {
            return "best friends forever";
        } else if (textAbbr.equals("ROFL")) {
            return "rolling on floor laughing";
        } else if (textAbbr.equals("LMK")) {
            return "let me know";
        }
        return textAbbr;
    }

    /**
     * Runs tests on the decTextAbbr method.
     */
    public static void testDecTextAbbr() {
        System.out.println("decTextAbbr(\"LOL\") expected 'laughing out loud', actual '" + decTextAbbr("LOL") + "'");
        System.out.println("decTextAbbr(\"IDK\") expected 'I don't know', actual '" + decTextAbbr("IDK") + "'");
        System.out.println("decTextAbbr(\"IMHO\") expected 'in my humble opinion', actual '" + decTextAbbr("IMHO") + "'");
        System.out.println("decTextAbbr(\"TMI\") expected 'too much information', actual '" + decTextAbbr("TMI") + "'");
        System.out.println("decTextAbbr(\"BFF\") expected 'best friends forever', actual '" + decTextAbbr("BFF") + "'");
        System.out.println("decTextAbbr(\"ROFL\") expected 'rolling on floor laughing', actual '" + decTextAbbr("ROFL") + "'");
        System.out.println("decTextAbbr(\"LMK\") expected 'let me know', actual '" + decTextAbbr("LMK") + "'");
    }

    public static void main(String[] args) {
        System.out.println("decTextAbbr(\"LOL\") expected 'laughing out loud', actual '" + decTextAbbr("LOL") + "'");
        System.out.println("decTextAbbr(\"IDK\") expected 'I don't know', actual '" + decTextAbbr("IDK") + "'");
        System.out.println("decTextAbbr(\"IMHO\") expected 'in my humble opinion', actual '" + decTextAbbr("IMHO") + "'");
        System.out.println("decTextAbbr(\"TMI\") expected 'too much information', actual '" + decTextAbbr("TMI") + "'");
        System.out.println("decTextAbbr(\"BFF\") expected 'best friends forever', actual '" + decTextAbbr("BFF") + "'");
        System.out.println("decTextAbbr(\"ROFL\") expected 'rolling on floor laughing', actual '" + decTextAbbr("ROFL") + "'");
        System.out.println("decTextAbbr(\"LMK\") expected 'let me know', actual '" + decTextAbbr("LMK") + "'");
    }

}