Colt 1.2.0

corejava
Class Format

java.lang.Object
  extended bycorejava.Format

public class Format
extends Object

A class for formatting numbers that follows printf conventions. Also implements C-like atoi and atof functions

Version:
1.22 2002-11-16

Constructor Summary
Format(String s)
          Formats the number following printf conventions.
 
Method Summary
static double atof(String s)
          Converts a string of digits to a double
static int atoi(String s)
          Converts a string of digits (decimal, octal or hex) to an integer
static long atol(String s)
          Converts a string of digits (decimal, octal or hex) to a long integer
 String format(char c)
          Formats a character into a string (like sprintf in C)
 String format(double x)
          Formats a double into a string (like sprintf in C)
 String format(int x)
          Formats an integer into a string (like sprintf in C)
 String format(long x)
          Formats a long integer into a string (like sprintf in C)
 String format(String s)
          Formats a string into a larger string (like sprintf in C)
static void main(String[] a)
          a test stub for the format class
static void printf(String fmt, char x)
          prints a formatted number following printf conventions
static void printf(String fmt, double x)
          prints a formatted number following printf conventions
static void printf(String fmt, int x)
          prints a formatted number following printf conventions
static void printf(String fmt, long x)
          prints a formatted number following printf conventions
static void printf(String fmt, String x)
          prints a formatted number following printf conventions
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Format

public Format(String s)
Formats the number following printf conventions. Main limitation: Can only handle one format parameter at a time Use multiple Format objects to format more than one number

Parameters:
s - the format string following printf conventions The string has a prefix, a format code and a suffix. The prefix and suffix become part of the formatted output. The format code directs the formatting of the (single) parameter to be formatted. The code has the following structure
Throws:
IllegalArgumentException - if bad format
Method Detail

printf

public static void printf(String fmt,
                          double x)
prints a formatted number following printf conventions

Parameters:
fmt - the format string
x - the double to print

printf

public static void printf(String fmt,
                          int x)
prints a formatted number following printf conventions

Parameters:
fmt - the format string
x - the int to print

printf

public static void printf(String fmt,
                          long x)
prints a formatted number following printf conventions

Parameters:
fmt - the format string
x - the long to print

printf

public static void printf(String fmt,
                          char x)
prints a formatted number following printf conventions

Parameters:
fmt - the format string
x - the character to print

printf

public static void printf(String fmt,
                          String x)
prints a formatted number following printf conventions

Parameters:
fmt - the format string
x - a string to print

atoi

public static int atoi(String s)
Converts a string of digits (decimal, octal or hex) to an integer

Parameters:
s - a string
Returns:
the numeric value of the prefix of s representing a base 10 integer

atol

public static long atol(String s)
Converts a string of digits (decimal, octal or hex) to a long integer

Parameters:
s - a string
Returns:
the numeric value of the prefix of s representing a base 10 integer

atof

public static double atof(String s)
Converts a string of digits to a double

Parameters:
s - a string

format

public String format(double x)
Formats a double into a string (like sprintf in C)

Parameters:
x - the number to format
Returns:
the formatted string
Throws:
IllegalArgumentException - if bad argument

format

public String format(int x)
Formats an integer into a string (like sprintf in C)

Parameters:
x - the number to format
Returns:
the formatted string

format

public String format(long x)
Formats a long integer into a string (like sprintf in C)

Parameters:
x - the number to format
Returns:
the formatted string

format

public String format(char c)
Formats a character into a string (like sprintf in C)

Returns:
the formatted string

format

public String format(String s)
Formats a string into a larger string (like sprintf in C)

Returns:
the formatted string

main

public static void main(String[] a)
a test stub for the format class


Colt 1.2.0

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