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Java Forum / First Aid / October 2006System.out.println()
Hi, I am trying to format my output with System.out.println. I have declared: public double gnShortLosses = 1330.03; public double gnLongLosses = 17770.330; and I would like to print them out with System.out.println() so that each one of the 2 double variables takes a width of 15 characters. Furthermore, how can I print them out with the appropriate commas if possible. For example I would like gnShortLosses to print out like this " 1,330.03". Because 1,330.03 takes 8 spaces, I would like to have 7 blanks in front of it (i.e. 15 characters) and the comma in the right place. TIA Roy Roy Gourgi schreef: > Hi, > [quoted text clipped - 11 lines] > Because 1,330.03 takes 8 spaces, I would like to have 7 blanks in front of > it (i.e. 15 characters) and the comma in the right place. Have a look at Formatter and String.format H. - -- Hendrik Maryns http://tcl.sfs.uni-tuebingen.de/~hendrik/ ================== http://aouw.org Ask smart questions, get good answers: http://www.catb.org/~esr/faqs/smart-questions.html Hi Hendrik, I tried Formatter and String.format but I am a bit confused?? Can you just show me how the statement with System.out.println(); Roy > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 [quoted text clipped - 36 lines] > =jhaM > -----END PGP SIGNATURE----- Roy Gourgi schreef: > Hi Hendrik, > > I tried Formatter and String.format but I am a bit confused?? If you read the javadoc for Formatter (it is here: http://java.sun.com/j2se/1.5.0/docs/api/java/util/Formatter.html), you would have seen that there is System.out.format(String, Object...) The syntax is described in Formatter, it would probably be something like System.out.format("%15f", gnShortLosses); H. - -- Hendrik Maryns http://tcl.sfs.uni-tuebingen.de/~hendrik/ ================== http://aouw.org Ask smart questions, get good answers: http://www.catb.org/~esr/faqs/smart-questions.html Hi, I tried that but I get the error message: a.. "Strategy.java": cannot find symbol; symbol : method format(java.lang.String,int), location: class java.io.PrintStream at line 367, column 22 I have imported the following: import java.util.*; import java.io.*; import java.lang.*; Why does it not work? Roy > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 [quoted text clipped - 28 lines] > =6yMk > -----END PGP SIGNATURE----- Please do not top-post. Roy Gourgi schreef: > Hi, > [quoted text clipped - 10 lines] > > Why does it not work? You don’t show enough code, but here’s what my cristall ball says: You still have to say which object you are invoking format on. You’ll have to sype the System.out. H. > Roy Gourgi schreef: >>>> Hi Hendrik, [quoted text clipped - 10 lines] > > H. - -- Hendrik Maryns http://tcl.sfs.uni-tuebingen.de/~hendrik/ ================== http://aouw.org Ask smart questions, get good answers: http://www.catb.org/~esr/faqs/smart-questions.html This in essence is my code, as I declare a gnShortLosses as double and then I try to print it out but it does not work? Sorry but I am new to Java and when you say sype the System.out I do not know what you mean! import java.util.*; import java.io.*; import java.lang.*; public static void main(String[] args) { public double gnShortLosses = 0.0; System.out.format("%15f", gnShortLosses); } Thanks Roy > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 [quoted text clipped - 53 lines] > =/Kki > -----END PGP SIGNATURE----- Once again, please do not top-post! Roy Gourgi schreef: > This in essence is my code, as I declare a gnShortLosses as double and then > I try to print it out but it does not work? > Sorry but I am new to Java and when you say sype the System.out I do not > know what you mean! That of course was a typo, I meant ‘type’. > import java.util.*; > import java.io.*; [quoted text clipped - 8 lines] > > } This cannot be your code, because the class declaration fails. This means I cannot paste this into my editor and compile it. So I won’t. Seems like it should work to me, but once again, *read the docs* of Formatter, and you should be able to find out. Btw, you don’t need any of the imports above. H. > Please do not top-post. > [quoted text clipped - 34 lines] >>>> >>>> H. - -- Hendrik Maryns http://tcl.sfs.uni-tuebingen.de/~hendrik/ ================== http://aouw.org Ask smart questions, get good answers: http://www.catb.org/~esr/faqs/smart-questions.html > Can you just show me how the statement with System.out.println(); 1) Make sure you use JSE 5.0 aka. J2SE 1.5 which has the new formatting stuff 2) use System.out.printf("%15f", gnShortLosses); If you use older runtimes look into NumberFormat and manual padding. Thanks Tor that did the trick. Roy > Hi, > [quoted text clipped - 14 lines] > TIA > Roy > Hi, > [quoted text clipped - 15 lines] > TIA > Roy Hi Roy. You didn't say what version of Java you're using, so I have two solutions. Hopefully, you're using 1.5, because it's quite simple: import java.text.DecimalFormat; class test { public static void main(String[] args) { double gnShortLosses = 1330.03; double gnLongLosses = 17770.330; // 1.4 - Left Justified DecimalFormat f = new DecimalFormat("#,###,###,###,##0.00"); System.out.println(f.format(gnShortLosses)); System.out.println(f.format(gnLongLosses)); // 1.5 - Optionally right-justified System.out.printf("%,15.2f", gnShortLosses); System.out.println(); System.out.printf("%,15.2f", gnLongLosses); } } Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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