Conversions (Starjava TTOOLS API)

java.lang.Object
- uk.ac.starlink.ttools.func.Conversions

```
public class Conversions
extends java.lang.Object
```
Functions for converting between strings and numeric values.

Since:

2 Sep 2004

Author:

Mark Taylor (Starlink)

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static int`	`fromHex(java.lang.String hexVal)`	Converts a string representing a hexadecimal number to its integer value.
`static byte`	`parseByte(java.lang.String str)`	Attempts to interpret a string as a byte (8-bit signed integer) value.
`static double`	`parseDouble(java.lang.String str)`	Attempts to interpret a string as a double (64-bit signed integer) value.
`static float`	`parseFloat(java.lang.String str)`	Attempts to interpret a string as a float (32-bit floating point) value.
`static int`	`parseInt(java.lang.String str)`	Attempts to interpret a string as an int (32-bit signed integer) value.
`static long`	`parseLong(java.lang.String str)`	Attempts to interpret a string as a long (64-bit signed integer) value.
`static short`	`parseShort(java.lang.String str)`	Attempts to interpret a string as a short (16-bit signed integer) value.
`static byte`	`toByte(double value)`	Attempts to convert the numeric argument to a byte (8-bit signed integer) result.
`static double`	`toDouble(double value)`	Converts the numeric argument to a double (64-bit signed integer) result.
`static float`	`toFloat(double value)`	Attempts to convert the numeric argument to a float (32-bit floating point) result.
`static java.lang.String`	`toHex(long value)`	Converts the integer argument to hexadecimal form.
`static int`	`toInteger(double value)`	Attempts to convert the numeric argument to an int (32-bit signed integer) result.
`static long`	`toLong(double value)`	Attempts to convert the numeric argument to a long (64-bit signed integer) result.
`static short`	`toShort(double value)`	Attempts to convert the numeric argument to a short (16-bit signed integer) result.
`static java.lang.String`	`toString(boolean booleanVal)`	Turns a boolean value into a string.
`static java.lang.String`	`toString(byte byteVal)`	Turns a byte value into a string.
`static java.lang.String`	`toString(char charVal)`	Turns a single character value into a string.
`static java.lang.String`	`toString(double fpVal)`	Turns a numeric value into a string.
`static java.lang.String`	`toString(long intVal)`	Turns an integer numeric value into a string.
`static java.lang.String`	`toString(java.lang.Object objVal)`	Turns any object value into a string.

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

- Method Detail
  - toString
```
public static java.lang.String toString(double fpVal)
```
    Turns a numeric value into a string.
    
    Parameters:
    
    fpVal - floating point numeric value
    
    Returns:
    
    a string representation of fpVal
  - toString
```
public static java.lang.String toString(long intVal)
```
    Turns an integer numeric value into a string.
    
    Parameters:
    
    intVal - integer numeric value
    
    Returns:
    
    a string representation of intVal
  - toString
```
public static java.lang.String toString(char charVal)
```
    Turns a single character value into a string.
    
    Parameters:
    
    charVal - character numeric value
    
    Returns:
    
    a string representation of charVal
  - toString
```
public static java.lang.String toString(byte byteVal)
```
    Turns a byte value into a string.
    
    Parameters:
    
    byteVal - byte numeric value
    
    Returns:
    
    a string representation of byteVal
  - toString
```
public static java.lang.String toString(boolean booleanVal)
```
    Turns a boolean value into a string.
    
    Parameters:
    
    booleanVal - boolean value (true or false)
    
    Returns:
    
    a string representation of booleanVal ("true" or "false")
  - toString
```
public static java.lang.String toString(java.lang.Object objVal)
```
    Turns any object value into a string. As applied to existing string values this isn't really useful, but it means that you can apply toString to any object value without knowing its type and get a useful return from it.
    
    Parameters:
    
    objVal - non-primitive value
    
    Returns:
    
    a string representation of objVal
  - parseByte
```
public static byte parseByte(java.lang.String str)
```
    Attempts to interpret a string as a byte (8-bit signed integer) value. If the input string can't be interpreted in this way, a blank value will result.
    
    Parameters:
    
    str - string containing numeric representation
    
    Returns:
    
    byte value of str
  - parseShort
```
public static short parseShort(java.lang.String str)
```
    Attempts to interpret a string as a short (16-bit signed integer) value. If the input string can't be interpreted in this way, a blank value will result.
    
    Parameters:
    
    str - string containing numeric representation
    
    Returns:
    
    byte value of str
  - parseInt
```
public static int parseInt(java.lang.String str)
```
    Attempts to interpret a string as an int (32-bit signed integer) value. If the input string can't be interpreted in this way, a blank value will result.
    
    Parameters:
    
    str - string containing numeric representation
    
    Returns:
    
    byte value of str
  - parseLong
```
public static long parseLong(java.lang.String str)
```
    Attempts to interpret a string as a long (64-bit signed integer) value. If the input string can't be interpreted in this way, a blank value will result.
    
    Parameters:
    
    str - string containing numeric representation
    
    Returns:
    
    byte value of str
  - parseFloat
```
public static float parseFloat(java.lang.String str)
```
    Attempts to interpret a string as a float (32-bit floating point) value. If the input string can't be interpreted in this way, a blank value will result.
    
    Parameters:
    
    str - string containing numeric representation
    
    Returns:
    
    byte value of str
  - parseDouble
```
public static double parseDouble(java.lang.String str)
```
    Attempts to interpret a string as a double (64-bit signed integer) value. If the input string can't be interpreted in this way, a blank value will result.
    
    Parameters:
    
    str - string containing numeric representation
    
    Returns:
    
    byte value of str
  - toByte
```
public static byte toByte(double value)
```
    Attempts to convert the numeric argument to a byte (8-bit signed integer) result. If it is out of range, a blank value will result.
    
    Parameters:
    
    value - numeric value for conversion
    
    Returns:
    
    value converted to type byte
  - toShort
```
public static short toShort(double value)
```
    Attempts to convert the numeric argument to a short (16-bit signed integer) result. If it is out of range, a blank value will result.
    
    Parameters:
    
    value - numeric value for conversion
    
    Returns:
    
    value converted to type short
  - toInteger
```
public static int toInteger(double value)
```
    Attempts to convert the numeric argument to an int (32-bit signed integer) result. If it is out of range, a blank value will result.
    
    Parameters:
    
    value - numeric value for conversion
    
    Returns:
    
    value converted to type int
  - toLong
```
public static long toLong(double value)
```
    Attempts to convert the numeric argument to a long (64-bit signed integer) result. If it is out of range, a blank value will result.
    
    Parameters:
    
    value - numeric value for conversion
    
    Returns:
    
    value converted to type long
  - toFloat
```
public static float toFloat(double value)
```
    Attempts to convert the numeric argument to a float (32-bit floating point) result. If it is out of range, a blank value will result.
    
    Parameters:
    
    value - numeric value for conversion
    
    Returns:
    
    value converted to type float
  - toDouble
```
public static double toDouble(double value)
```
    Converts the numeric argument to a double (64-bit signed integer) result.
    
    Parameters:
    
    value - numeric value for conversion
    
    Returns:
    
    value converted to type double
  - toHex
```
public static java.lang.String toHex(long value)
```
    Converts the integer argument to hexadecimal form.
    
    Parameters:
    
    value - integer value
    
    Returns:
    
    hexadecimal representation of value
    
    Examples:
    
    toHex(42) = "2a"
  - fromHex
```
public static int fromHex(java.lang.String hexVal)
```
    Converts a string representing a hexadecimal number to its integer value.
    
    Parameters:
    
    hexVal - hexadecimal representation of value
    
    Returns:
    
    integer value represented by hexVal
    
    Examples:
    
    fromHex("2a") = 42

Class Conversions

Method Summary

Methods inherited from class java.lang.Object

Method Detail

toString

toString

toString

toString

toString

toString

parseByte

parseShort

parseInt

parseLong

parseFloat

parseDouble

toByte

toShort

toInteger

toLong

toFloat

toDouble

toHex

fromHex