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You are here: Home / Archives for format Integer

Java: Format Integer Into Fixed Width String

January 5, 2010 by Sze Hau 2 Comments

Sometime, you may want to format an integer or a long value into a fixed width String. You need to display the value in fixed width especially in reports where you want to keep the numbers in aligned (e.g. 3456 as 0003456 and 1234 as 0001234). Other than that, you may also want to format the integer value for a better visibility. For example, to display integer value as a do … [Read more...]

Java: Format Long Integer Into Hexadecimal String

August 18, 2009 by Sze Hau 2 Comments

In software programming, sometime you may want to convert a long integer or integer into hexadecimal string for viewing purpose or also as a text format to be stored in text file or database. The Java API itself does not have a class or function to convert a long into a fixed 16 characters hexadecimal string or an integer into  fixed 8 characters hexadecimal string. The … [Read more...]

Java: Format integer into number of decimal places and performance

March 20, 2009 by Sze Hau 2 Comments

For certain reasons (e.g. precision issue), some programmer may store a float value (e.g. money) in integer variable. For example -12345678.90 is stored as -1234567890. To convert the integer value to number with number of decimal places is a problem. There are several way to do it. You can simply use the Java's String.format(), DecimalFormat or Float.toString(). Most of … [Read more...]

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