Package org.plumelib.util

Class ImmutableTypes

java.lang.Object

org.plumelib.util.ImmutableTypes

public class ImmutableTypes
extends Object

Records all the immutable types in the JDK, and can be queried.

Field Summary

Fields

Modifier and Type	Field	Description
static Set<String>	immutableTypeNames	The names of the immutable types.

Method Summary

Modifier and Type	Method	Description
static boolean	isImmutable(String typeName)	Returns true iff the class of the given name is immutable.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

immutableTypeNames

public static Set<String> immutableTypeNames

The names of the immutable types. This is public so that clients can extend it with bug fixes or application-specific types. (Or, make a pull request to add more types to this file.)

The set generally does not contain interfaces, because types that implement an interface may be mutable even if the interface provides no mutating methods.

Method Details

isImmutable

public static boolean isImmutable(String typeName)

Returns true iff the class of the given name is immutable.

Parameters:

typeName - the fully-qualified name of the type

Returns:

true iff the class of the given name is immutable