```
public class Tools
extends Object
```
This class contains static utility methods.

Field Summary

Fields
Modifier and Type Field Description

static char[] hexDigits
This array contains the 16 hex digits '0'-'F'.

Constructor Summary

Constructors
Constructor Description

Tools()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static void`	`addToArray(float[] a, float value)`	Adds a number to all array elements
`static String`	`c2hex(Color c)`	Converts a Color to an 7 byte hex string starting with '#'.
`static String`	`copyFile(String path1, String path2)`	Copies the contents of the file at 'path1' to 'path2', returning an error message (as a non-empty string) if there is an error.
`static String`	`f2hex(float f)`	Converts a float to an 9 byte hex string starting with '#'.
`static String`	`fixNewLines(String s)`	Converts carriage returns to line feeds.
`static int`	`getDecimalPlaces(double n)`	Returns the number of decimal places needed to display a number, or -2 if exponential notation should be used.
`static int`	`getDecimalPlaces(double n1, double n2)`	Returns the number of decimal places needed to display two numbers, or -2 if exponential notation should be used.
`static double[]`	`getMinMax(double[] a)`
`static double[]`	`getMinMax(float[] a)`
`static ImageStatistics`	`getStatistics(double[] a)`
`static String`	`int2hex(int i, int digits)`	Converts an int to a zero-padded hex string of fixed length 'digits'.
`static String`	`openFromIJJarAsString(String path)`	Opens a text file in ij.jar as a String (example path: "/macros/Circle_Tool.txt").
`static double`	`parseDouble(String s)`	Returns a double containg the value represented by the specified `String`.
`static double`	`parseDouble(String s, double defaultValue)`	Returns a double containg the value represented by the specified `String`.
`static int[]`	`rank(double[] values)`	Returns a sorted list of indices of the specified double array.
`static int[]`	`rank(String[] data)`	Returns a sorted list of indices of the specified String array.
`static double[]`	`resampleArray(double[] y1, int len2)`	Returns an array linearly resampled to a different length.
`static String[]`	`split(String str)`	Splits a string into substrings using the default delimiter set, which is " \t\n\r" (space, tab, newline and carriage-return).
`static String[]`	`split(String str, String delim)`	Splits a string into substring using the characters contained in the second argument as the delimiter set.
`static double[]`	`toDouble(float[] a)`	Converts the float array 'a' to a double array.
`static float[]`	`toFloat(double[] a)`	Converts the double array 'a' to a float array.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - hexDigits
```
public static final char[] hexDigits
```
    This array contains the 16 hex digits '0'-'F'.
- Constructor Detail
  - Tools
```
public Tools()
```
- Method Detail
  - c2hex
```
public static String c2hex(Color c)
```
    Converts a Color to an 7 byte hex string starting with '#'.
  - f2hex
```
public static String f2hex(float f)
```
    Converts a float to an 9 byte hex string starting with '#'.
  - int2hex
```
public static String int2hex(int i,
                             int digits)
```
    Converts an int to a zero-padded hex string of fixed length 'digits'. If the number is too high, it gets truncated, keeping only the lowest 'digits' characters.
  - getStatistics
```
public static ImageStatistics getStatistics(double[] a)
```
  - getMinMax
```
public static double[] getMinMax(double[] a)
```
  - getMinMax
```
public static double[] getMinMax(float[] a)
```
  - toDouble
```
public static double[] toDouble(float[] a)
```
    Converts the float array 'a' to a double array.
  - toFloat
```
public static float[] toFloat(double[] a)
```
    Converts the double array 'a' to a float array.
  - addToArray
```
public static void addToArray(float[] a,
                              float value)
```
    Adds a number to all array elements
  - fixNewLines
```
public static String fixNewLines(String s)
```
    Converts carriage returns to line feeds.
  - parseDouble
```
public static double parseDouble(String s,
                                 double defaultValue)
```
    Returns a double containg the value represented by the specified String.
    
    Parameters:
    
    s - the string to be parsed.
    
    defaultValue - the value returned if s does not contain a parsable double
    
    Returns:
    
    The double value represented by the string argument or defaultValue if the string does not contain a parsable double
  - parseDouble
```
public static double parseDouble(String s)
```
    Returns a double containg the value represented by the specified String.
    
    Parameters:
    
    s - the string to be parsed.
    
    Returns:
    
    The double value represented by the string argument or Double.NaN if the string does not contain a parsable double
  - getDecimalPlaces
```
public static int getDecimalPlaces(double n)
```
    Returns the number of decimal places needed to display a number, or -2 if exponential notation should be used.
  - getDecimalPlaces
```
public static int getDecimalPlaces(double n1,
                                   double n2)
```
    Returns the number of decimal places needed to display two numbers, or -2 if exponential notation should be used.
  - split
```
public static String[] split(String str)
```
    Splits a string into substrings using the default delimiter set, which is " \t\n\r" (space, tab, newline and carriage-return).
  - split
```
public static String[] split(String str,
                             String delim)
```
    Splits a string into substring using the characters contained in the second argument as the delimiter set.
  - rank
```
public static int[] rank(double[] values)
```
    Returns a sorted list of indices of the specified double array. Modified from: http://stackoverflow.com/questions/951848 by N.Vischer.
  - rank
```
public static int[] rank(String[] data)
```
    Returns a sorted list of indices of the specified String array.
  - resampleArray
```
public static double[] resampleArray(double[] y1,
                                     int len2)
```
    Returns an array linearly resampled to a different length.
  - openFromIJJarAsString
```
public static String openFromIJJarAsString(String path)
```
    Opens a text file in ij.jar as a String (example path: "/macros/Circle_Tool.txt").
  - copyFile
```
public static String copyFile(String path1,
                              String path2)
```
    Copies the contents of the file at 'path1' to 'path2', returning an error message (as a non-empty string) if there is an error. Based on the method with the same name in Tobias Pietzsch's TifBenchmark class.

Class Tools

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

hexDigits

Constructor Detail

Tools

Method Detail

c2hex

f2hex

int2hex

getStatistics

getMinMax

getMinMax

toDouble

toFloat

addToArray

fixNewLines

parseDouble

parseDouble

getDecimalPlaces

getDecimalPlaces

split

split

rank

rank

resampleArray

openFromIJJarAsString

copyFile