An instance of class Package contains information about a Java package. This includes implementation and specification versions. Typically this information is retrieved from the manifest.
Packages are managed by class loaders. All classes loaded by the same loader from the same package share a Package instance.
Public Member Functions | |
String | getImplementationTitle () |
Return the title of the implementation of this package, or null if this is unknown. | |
String | getImplementationVendor () |
Return the name of the vendor or organization that provided this implementation of the package, or null if this is unknown. | |
String | getImplementationVersion () |
Return the version of the implementation of this package, or null if this is unknown. | |
String | getName () |
Return the name of this package in the standard dot notation; for example: "java.lang". | |
String | getSpecificationTitle () |
Return the title of the specification this package implements, or null if this is unknown. | |
String | getSpecificationVendor () |
Return the name of the vendor or organization that owns and maintains the specification this package implements, or null if this is unknown. | |
String | getSpecificationVersion () |
Return the version of the specification this package implements, or null if this is unknown. | |
int | hashCode () |
Answers an integer hash code for the receiver. | |
boolean | isCompatibleWith (String version) throws NumberFormatException |
Return true if this package's specification version is compatible with the specified version string. | |
boolean | isSealed () |
Return true if this package is sealed, false otherwise. | |
boolean | isSealed (URL url) |
Return true if this package is sealed with respect to the specified URL, false otherwise. | |
String | toString () |
Answers a string containing a concise, human-readable description of the receiver. | |
Static Public Member Functions | |
static Package | getPackage (String packageName) |
Attempt to locate the requested package in the caller's class loader. | |
static Package[] | getPackages () |
Return all the packages known to the caller's class loader. |
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Return the title of the implementation of this package, or null if this is unknown. The format of this string is unspecified.
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Return the name of the vendor or organization that provided this implementation of the package, or null if this is unknown. The format of this string is unspecified.
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Return the version of the implementation of this package, or null if this is unknown. The format of this string is unspecified.
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Return the name of this package in the standard dot notation; for example: "java.lang".
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Attempt to locate the requested package in the caller's class loader. If no package information can be located, null is returned.
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Return all the packages known to the caller's class loader.
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Return the title of the specification this package implements, or null if this is unknown.
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Return the name of the vendor or organization that owns and maintains the specification this package implements, or null if this is unknown.
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Return the version of the specification this package implements, or null if this is unknown. The version string is a sequence of non-negative integers separated by dots; for example: "1.2.3".
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Answers an integer hash code for the receiver.
Any two objects which answer
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Return true if this package's specification version is compatible with the specified version string. Version strings are compared by comparing each dot separated part of the version as an integer.
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Return true if this package is sealed, false otherwise.
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Return true if this package is sealed with respect to the specified URL, false otherwise.
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Answers a string containing a concise, human-readable description of the receiver.
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