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Thread: Help Desperately needed...

  1. #1
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    Default Help Desperately needed...

    Hey all I was wondering if someone could help me understand this code as It will unlock my ability to pass this exam tomorrow... I was good at java and now i'm totally out of date as i've barely touched it in years since I completed my HND. Anyways, I was wondering if someone could help explain this code to me? It would be so much appreciated

    public class TimeTest extends TestCase {
    public void testValidConvert24to12hour() {
    String[] times = {"0000","1200","0300","0650","1059","2159","2359"};
    String[] timeStrings = {"12:00am","12:00pm","3:00am","6:50am",
    "10:59am","9:59pm","11:59pm"};
    Time test = new Time();
    for (int x=0;x<times.length;x++){
    String result = test.convert24to12hour(times[x]);
    assertEquals("Test time "+x,timeStrings[x],result);
    }
    }
    public void testInvalidConvert24to12hour() {
    String[] times = {"12309","650","2450","1360","0675","x650","1Q50",
    "16Z0","165K"};
    Time test = new Time();
    for (int x=0;x<times.length;x++){
    String result = test.convert24to12hour(times[x]);
    assertNull("Test time "+x,result);
    }
    }
    }

    I don't actually understand where the Time test = New time Comes from.. also where the x++ is coming from. IT's very stressful as I am very unsure of this code. Is there anyway to locate it in the IDE Netbeans interface so i know what i'm linking too? This is the solution, but I am not understanding the location of this. Everything else is pretty basic to me apart form this.
    Last edited by JavaPF; November 30th, 2010 at 12:56 PM. Reason: Please use [highlight=Java] code [/highlight] tags


  2. #2
    mmm.. coffee JavaPF's Avatar
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    Default Re: Help Desperately needed...

    Hello SBOSlayer, welcome to the Java Programming Forums

    String[] times = {"0000","1200","0300","0650","1059","2159","2359"};
    String[] timeStrings = {"12:00am","12:00pm","3:00am","6:50am","10:59am","9:59pm","11:59pm"};

    times and timeStrings are both String arrays.

    for (int x=0;x<times.length;x++){
    String result = test.convert24to12hour(times[x]);
    assertEquals("Test time "+x,timeStrings[x],result);
    }

    This is a for loop which loops through the times array. It loops by the amount of values in the array. This is what times.length is.

    x is the integer variable defined in the for loop. x++ means increment itself by 1.

    I hope this helps.
    Please use [highlight=Java] code [/highlight] tags when posting your code.
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  3. The Following User Says Thank You to JavaPF For This Useful Post:

    SBOSlayer (November 30th, 2010)

  4. #3
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    Default Re: Help Desperately needed...

    Thank you so much for your help Was informative and helpful

    I am however, still trying to work out where: Time test = new Time(); comes from exactly? It's a problem I am experiencing in most codes. Is it possibly located somewhere in the testing of this code? I have two .jars to work from... I can't seem to see the source code for them, I guess i'm doing something wrong, but I figured that the Time test = new time would be referenced from that?

    I would be so much in ur debt if you could help me with this aspect also. I am very grateful for the info so far

  5. #4
    mmm.. coffee JavaPF's Avatar
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    Default Re: Help Desperately needed...

    No problem, glad I could help.

    Maybe you are meant to create the Time class yourself? Create a class in the same package called Time..

    Either that or it's an import.
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