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java Programming Glossary: digit

How to round a number to n decimal places in Java

http://stackoverflow.com/questions/153724/how-to-round-a-number-to-n-decimal-places-in-java

in most situations. I also would like only significant digits to be displayed. That is there should not be any trailing zeroes... even rounding. That is it will round down if the previous digit is even. What I'd like is this 0.912385 0.91239 0.912300 0.9123.. best way to achieve this in Java java decimal rounding digits share improve this question Use setRoundingMode see linked..

Howto unescape a Java string literal in Java

http://stackoverflow.com/questions/3537706/howto-unescape-a-java-string-literal-in-java

ord X ^ ord '@' Old hex escapes xXX unbraced must be 2 xdigits Perl hex escapes x XXX braced may be 1 8 xdigits NB proper.. be 2 xdigits Perl hex escapes x XXX braced may be 1 8 xdigits NB proper Unicode never needs more than 6 as highest valid.. escape IDIOT JAVA PREPROCESSOR uXXXX must be exactly 4 xdigits I can't write XXXX in this comment where it belongs because..

JFormattedTextField is not properly cleared

http://stackoverflow.com/questions/4148336/jformattedtextfield-is-not-properly-cleared

frame.setLayout new GridLayout 3 3 for Digit d Digit.digits frame.add new CellTest d frame.pack frame.setVisible true.. d frame.pack frame.setVisible true CellTest Digit digit this.setLayout new BorderLayout this.setBorder BorderFactory.createLineBorder.. candidates BorderLayout.NORTH JDigit cellValue new JDigit digit add cellValue BorderLayout.CENTER class JDigit extends JButton..

Unicode equivalents for \w and \b in Java regular expressions?

http://stackoverflow.com/questions/4304928/unicode-equivalents-for-w-and-b-in-java-regular-expressions

interpret the w character class shorthand as any letter digit or connecting punctuation usually underscore . That way a regex.. not_boundary break switch case 'd' newstr.append digits_charclass break switch case 'D' newstr.append not_digits_charclass.. digits_charclass break switch case 'D' newstr.append not_digits_charclass break switch case 'h' newstr.append horizontal_whitespace_charclass..

Browse for image file and display it using Java Swing

http://stackoverflow.com/questions/13512612/browse-for-image-file-and-display-it-using-java-swing

public void actionPerformed ActionEvent e JButton btnAddDigit new JButton Add Digit btnAddDigit.addActionListener new ActionListener.. ActionEvent e JButton btnAddDigit new JButton Add Digit btnAddDigit.addActionListener new ActionListener public void.. e JButton btnAddDigit new JButton Add Digit btnAddDigit.addActionListener new ActionListener public void actionPerformed..

Is it possible to extend Java Enums?

http://stackoverflow.com/questions/2642281/is-it-possible-to-extend-java-enums

values to the enum. This is a bad example but public class Digits public enum Digit 0 1 2 3 4 5 6 7 8 9 public class HexDigits.. This is a bad example but public class Digits public enum Digit 0 1 2 3 4 5 6 7 8 9 public class HexDigits extends Digits public.. public enum Digit 0 1 2 3 4 5 6 7 8 9 public class HexDigits extends Digits public enum Digit A B C D E F so that HexDigits.Digit..

JFormattedTextField is not properly cleared

http://stackoverflow.com/questions/4148336/jformattedtextfield-is-not-properly-cleared

the tab and number keys work as expected. In particular Digit.EMPTY is a valid value. import java.awt. import java.awt.event... frame.setLayout new GridLayout 3 3 for Digit d Digit.digits frame.add new CellTest d frame.pack frame.setVisible.. frame.setLayout new GridLayout 3 3 for Digit d Digit.digits frame.add new CellTest d frame.pack frame.setVisible..

How to replace special characters in a string?

http://stackoverflow.com/questions/4283351/how-to-replace-special-characters-in-a-string

String alphaOnly input.replaceAll ^a zA Z String alphaAndDigits input.replaceAll ^a zA Z0 9 or the equivalent String alphaOnly.. String alphaOnly input.replaceAll ^ p Alpha String alphaAndDigits input.replaceAll ^ p Alpha p Digit Or with Guava private static.. p Alpha String alphaAndDigits input.replaceAll ^ p Alpha p Digit Or with Guava private static final CharMatcher ALNUM CharMatcher.inRange..

Unicode equivalents for \w and \b in Java regular expressions?

http://stackoverflow.com/questions/4304928/unicode-equivalents-for-w-and-b-in-java-regular-expressions

Lower p Lower Upper p Upper ASCII p ASCII Alpha p Alpha Digit p Digit Alnum p Alnum Punct p Punct Graph p Graph Print p Print.. p Lower Upper p Upper ASCII p ASCII Alpha p Alpha Digit p Digit Alnum p Alnum Punct p Punct Graph p Graph Print p Print Blank.. Graph p Graph Print p Print Blank p Blank Cntrl p Cntrl XDigit p XDigit Space p Space This is a real mess because it means..