java.awt
Class RenderingHints.Key
- java.lang.Object
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- java.awt.RenderingHints.Key
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- Enclosing class:
- RenderingHints
public abstract static class RenderingHints.Key extends Object
Defines the base type of all keys used along with theRenderingHintsclass to control various algorithm choices in the rendering and imaging pipelines. Instances of this class are immutable and unique which means that tests for matches can be made using the==operator instead of the more expensiveequals()method.
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Constructor Summary
Constructors Modifier Constructor and Description protectedKey(int privatekey)Construct a key using the indicated private key.
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Method Summary
All Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method and Description booleanequals(Object o)The equals method for all Key objects will return the same result as the equality operator '=='.inthashCode()The hash code for all Key objects will be the same as the system identity code of the object as defined by the System.identityHashCode() method.protected intintKey()Returns the private integer key that the subclass instantiated this Key with.abstract booleanisCompatibleValue(Object val)Returns true if the specified object is a valid value for this Key.
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Constructor Detail
Key
protected Key(int privatekey)
Construct a key using the indicated private key. Each subclass of Key maintains its own unique domain of integer keys. No two objects with the same integer key and of the same specific subclass can be constructed. An exception will be thrown if an attempt is made to construct another object of a given class with the same integer key as a pre-existing instance of that subclass of Key.- Parameters:
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privatekey- the specified key
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Method Detail
isCompatibleValue
public abstract boolean isCompatibleValue(Object val)
Returns true if the specified object is a valid value for this Key.- Parameters:
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val- theObjectto test for validity - Returns:
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trueifvalis valid;falseotherwise.
intKey
protected final int intKey()
Returns the private integer key that the subclass instantiated this Key with.- Returns:
- the private integer key that the subclass instantiated this Key with.
hashCode
public final int hashCode()
The hash code for all Key objects will be the same as the system identity code of the object as defined by the System.identityHashCode() method.- Overrides:
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hashCodein classObject - Returns:
- a hash code value for this object.
- See Also:
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Object.equals(java.lang.Object),System.identityHashCode(java.lang.Object)
equals
public final boolean equals(Object o)
The equals method for all Key objects will return the same result as the equality operator '=='.- Overrides:
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equalsin classObject - Parameters:
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o- the reference object with which to compare. - Returns:
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trueif this object is the same as the obj argument;falseotherwise. - See Also:
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Object.hashCode(),HashMap
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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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