Difference between revisions of "Formatting"
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<syntaxhighlight lang="java5"> | <syntaxhighlight lang="java5"> | ||
| − | System.out.printf("%2$s , %1$s", Suhrid, Karthik); | + | System.out.printf("%2$s , %1$s", "Suhrid", "Karthik"); |
//Prints : Karthik, Suhrid | //Prints : Karthik, Suhrid | ||
Revision as of 02:14, 8 July 2011
Introduction
- String formatting can be done using the printf() and the format() methods added in java.io.PrintStream (System.out is a PrintStream)
- Internally they ise the java.util.Formatter class.
- Basic format:
printf("format string", argument(s));
Format String
- Syntax:
%[arg_index$][flags][width][.precision] conversion_char
Arguments within [] are optional. Only the conversion_char is mandatory. The following are the conversion chars:
- b - boolean
- c - char
- d - integer
- f - floating point
- s - string
Optional arguments
- arg_index is the number of the argument followed by a $. The no starts from 1.
System.out.printf("%2$s , %1$s", "Suhrid", "Karthik");
//Prints : Karthik, Suhrid
