Value (FreeHEP GraphicsBase 2.2.2 API)

java.lang.Object
- org.freehep.graphicsbase.util.Value

```
public class Value
extends Object
```
A class that can represent any Java object or primitive. Unlike the built-in primitive proxies (Double, Integer etc) it is mutable. It is used to allow values to be used without needing overloaded methods for each primitive type, and without the overhead of object creation/deletion. When a value is returned by an Object method it should be assumed to be valid only until the next method call to that Object. The use of Value should be avoided in multi-threaded environments.

Version:

$Id: Value.java 9133 2006-10-13 16:25:43Z turri $

Author:

tonyj

Field Summary

Fields
Modifier and Type	Field and Description
`static Class<?>`	`TYPE_BOOLEAN`
`static Class<?>`	`TYPE_BYTE`
`static Class<?>`	`TYPE_CHAR`
`static Class<?>`	`TYPE_DATE`
`static Class<?>`	`TYPE_DOUBLE`
`static Class<?>`	`TYPE_FLOAT`
`static Class<?>`	`TYPE_INTEGER`
`static Class<?>`	`TYPE_LONG`
`static Class<?>`	`TYPE_SHORT`
`static Class<?>`	`TYPE_STRING`

Constructor Summary

Constructors
Constructor and Description

Value()

Value(Value v)

Constructors
Constructor and Description
`Value()`
`Value(Value v)`

Method Summary

Methods
Modifier and Type	Method and Description
`Value`	`fromExternal(String external)` Set to value from the external respresentation
`boolean`	`getBoolean()` Get the boolean value.
`byte`	`getByte()` Get the byte value.
`char`	`getChar()` Get the char value.
`Date`	`getDate()` Get the Date value.
`double`	`getDouble()` Get the double value.
`float`	`getFloat()` Get the float value.
`int`	`getInt()` Get the integer value.
`long`	`getLong()` Get the long value.
`Object`	`getObject()` Get the Object value.
`short`	`getShort()` Get the short value.
`String`	`getString()` Get the String value.
`Class<?>`	`getType()` Get the Value's type
`Value`	`set(boolean val)` Set the Value's internal value to a boolean.
`Value`	`set(byte val)` Set the Value's internal value to a byte.
`Value`	`set(char val)` Set the Value's internal value to a char.
`Value`	`set(Date val)` Set the Value's internal value to a Date.
`Value`	`set(double val)` Set the Value's internal value to a double.
`Value`	`set(float val)` Set the Value's internal value to a float.
`Value`	`set(int val)` Set the Value's internal value to an integer.
`Value`	`set(long val)` Set the Value's internal value to a long.
`Value`	`set(Object val)` Set the Value's internal value to an Object.
`Value`	`set(short val)` Set the Value's internal value to a short.
`Value`	`set(String val)` Set the Value's internal value to a String.
`Value`	`setValue(Value v)`
`String`	`toExternal()` Returns an external representation of this value
`String`	`toString()` Get the String value.

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

- Field Detail
  - TYPE_INTEGER
```
public static final Class<?> TYPE_INTEGER
```
  - TYPE_SHORT
```
public static final Class<?> TYPE_SHORT
```
  - TYPE_LONG
```
public static final Class<?> TYPE_LONG
```
  - TYPE_FLOAT
```
public static final Class<?> TYPE_FLOAT
```
  - TYPE_DOUBLE
```
public static final Class<?> TYPE_DOUBLE
```
  - TYPE_BOOLEAN
```
public static final Class<?> TYPE_BOOLEAN
```
  - TYPE_BYTE
```
public static final Class<?> TYPE_BYTE
```
  - TYPE_CHAR
```
public static final Class<?> TYPE_CHAR
```
  - TYPE_STRING
```
public static final Class<?> TYPE_STRING
```
  - TYPE_DATE
```
public static final Class<?> TYPE_DATE
```
- Constructor Detail
  - Value
```
public Value()
```
  - Value
```
public Value(Value v)
```
- Method Detail
  - setValue
```
public Value setValue(Value v)
```
  - getType
```
public Class<?> getType()
```
    Get the Value's type
    
    Returns:
    The Class of this Value.
  - set
```
public Value set(int val)
```
    Set the Value's internal value to an integer.
    
    Parameters:
    val - The integer value.
    
    Returns:
    The Value object with the given internal value.
  - set
```
public Value set(short val)
```
    Set the Value's internal value to a short.
    
    Parameters:
    val - The short value.
    
    Returns:
    The Value object with the given internal value.
  - set
```
public Value set(long val)
```
    Set the Value's internal value to a long.
    
    Parameters:
    val - The long value.
    
    Returns:
    The Value object with the given internal value.
  - set
```
public Value set(float val)
```
    Set the Value's internal value to a float.
    
    Parameters:
    val - The float value.
    
    Returns:
    The Value object with the given internal value.
  - set
```
public Value set(double val)
```
    Set the Value's internal value to a double.
    
    Parameters:
    val - The double value.
    
    Returns:
    The Value object with the given internal value.
  - set
```
public Value set(boolean val)
```
    Set the Value's internal value to a boolean.
    
    Parameters:
    val - The boolean value.
    
    Returns:
    The Value object with the given internal value.
  - set
```
public Value set(byte val)
```
    Set the Value's internal value to a byte.
    
    Parameters:
    val - The byte value.
    
    Returns:
    The Value object with the given internal value.
  - set
```
public Value set(char val)
```
    Set the Value's internal value to a char.
    
    Parameters:
    val - The char value.
    
    Returns:
    The Value object with the given internal value.
  - set
```
public Value set(String val)
```
    Set the Value's internal value to a String.
    
    Parameters:
    val - The String value.
    
    Returns:
    The Value object with the given internal value.
  - set
```
public Value set(Date val)
```
    Set the Value's internal value to a Date.
    
    Parameters:
    val - The Date value.
    
    Returns:
    The Value object with the given internal value.
  - set
```
public Value set(Object val)
```
    Set the Value's internal value to an Object.
    
    Parameters:
    val - The Object value.
    
    Returns:
    The Value object with the given internal value.
  - getInt
```
public int getInt()
```
    Get the integer value.
    
    Returns:
    The int value.
    
    Throws:
    
    A - ClassCastException is thrown if this Value has incompatible type.
  - getShort
```
public short getShort()
```
    Get the short value.
    
    Returns:
    The short value.
    
    Throws:
    
    A - ClassCastException is thrown if this Value has incompatible type.
  - getLong
```
public long getLong()
```
    Get the long value.
    
    Returns:
    The long value.
    
    Throws:
    
    A - ClassCastException is thrown if this Value has incompatible type.
  - getFloat
```
public float getFloat()
```
    Get the float value.
    
    Returns:
    The float value.
    
    Throws:
    
    A - ClassCastException is thrown if this Value has incompatible type.
  - getDouble
```
public double getDouble()
```
    Get the double value.
    
    Returns:
    The double value.
    
    Throws:
    
    A - ClassCastException is thrown if this Value has incompatible type.
  - getBoolean
```
public boolean getBoolean()
```
    Get the boolean value.
    
    Returns:
    The boolean value.
    
    Throws:
    
    A - ClassCastException is thrown if this Value has incompatible type.
  - getByte
```
public byte getByte()
```
    Get the byte value.
    
    Returns:
    The byte value.
    
    Throws:
    
    A - ClassCastException is thrown if this Value has incompatible type.
  - getChar
```
public char getChar()
```
    Get the char value.
    
    Returns:
    The char value.
    
    Throws:
    
    A - ClassCastException is thrown if this Value has incompatible type.
  - getString
```
public String getString()
```
    Get the String value.
    
    Returns:
    The String representation of the internal value.
  - getDate
```
public Date getDate()
```
    Get the Date value.
    
    Returns:
    The Date value.
    
    Throws:
    
    A - ClassCastException is thrown if this Value has incompatible type.
  - getObject
```
public Object getObject()
```
    Get the Object value.
    
    Returns:
    The Object value.
  - toString
```
public String toString()
```
    Get the String value.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    The String representation of the internal value.
  - toExternal
```
public String toExternal()
```
    Returns an external representation of this value
  - fromExternal
```
public Value fromExternal(String external)
                   throws IllegalArgumentException
```
    Set to value from the external respresentation
    
    Throws:
    
    IllegalArgumentException

Class Value

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

TYPE_INTEGER

TYPE_SHORT

TYPE_LONG

TYPE_FLOAT

TYPE_DOUBLE

TYPE_BOOLEAN

TYPE_BYTE

TYPE_CHAR

TYPE_STRING

TYPE_DATE

Constructor Detail

Value

Value

Method Detail

setValue

getType

set

set

set

set

set

set

set

set

set

set

set

getInt

getShort

getLong

getFloat

getDouble

getBoolean

getByte

getChar

getString

getDate

getObject

toString

toExternal

fromExternal