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learning java - today: enums
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Martin Vietor
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Joined: Oct 31, 2008
Posts: 40
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Hi, I'm trying tolearn java, didn't even know it was a prog language 5 days ago - so bare with me. I have a boolean array, let's call it when: boolean[] when = new boolean[7]; I have an enum that looks kinda like this: enum weekday { mon("Mondays suck!"), tue("Tuesdays suck, too!"), ... sun("Sundays don't suck so much."); { private final String s, this.s=s andsoforth. Now: I want my program to output for (i=0; i<7;i++) { if (when[i]) sysout(...well, that's kinda the problem! How do I tell the program that when i=0 and when[0] is true to print weekday.mon? Should I write the enum differently? It would really be a little bit of a pain to change the boolean[], as it is used elsewhere in the program, but if that makes more sense: bring it on. You said no question too simple... Thanks a bunch, Martin
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The problem people have in trying to create something foolproof is that they generally underestimate the inginuity of fools.
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Larry Frissell
Ranch Hand
Joined: May 16, 2008
Posts: 82
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The is an example in the Sun tutorial here. That shows enum, have you tried that?
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Martin Vietor
Ranch Hand
Joined: Oct 31, 2008
Posts: 40
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I did, actually, I adjusted my own output to that example, because I didn't think too many people here spoke German. I could, I suppose, do something like switch(i) { case 0 : sysout weekday.mon; case 1 : sysout weekday.tue; ... } But that doesn't seem too elegant. I had the data in a string[] before, so I could just write if when[i] then sysout weekday[i] The friend who sat down with me for a couple of hours last Sunday to tell me what a class is said I should change it to enum - but now I'm not so sure. Seems more complicated to me...
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Rob Spoor
Sheriff
Joined: Oct 27, 2005
Posts: 19216
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Every enum class automatically gets a method called values() that returns an array with the values of that enum. Use that one.
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SCJP 1.4 - SCJP 6 - SCWCD 5
How To Ask Questions How To Answer Questions
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Martin Vietor
Ranch Hand
Joined: Oct 31, 2008
Posts: 40
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SWEEEEEEET! You have mae a grace mistake - I shall haunt this place with simple questions!
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Stephen Davies
Ranch Hand
Joined: Jul 23, 2008
Posts: 352
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Great, but remember, during your Haunting, could you please use the code tags!
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be a well encapsulated person, don't expose your privates, unless you public void getWife()!
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Martin Vietor
Ranch Hand
Joined: Oct 31, 2008
Posts: 40
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subject: learning java - today: enums
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