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Java™ Platform Standard Ed. 6 |
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java.lang.Object java.util.jar.Manifest
public class Manifest
The Manifest class is used to maintain Manifest entry names and their associated Attributes. There are main Manifest Attributes as well as per-entry Attributes. For information on the Manifest format, please see the Manifest format specification.
Attributes
Constructor Summary | |
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Manifest()
Constructs a new, empty Manifest. |
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Manifest(InputStream is)
Constructs a new Manifest from the specified input stream. |
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Manifest(Manifest man)
Constructs a new Manifest that is a copy of the specified Manifest. |
Method Summary | |
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void |
clear()
Clears the main Attributes as well as the entries in this Manifest. |
Object |
clone()
Returns a shallow copy of this Manifest. |
boolean |
equals(Object o)
Returns true if the specified Object is also a Manifest and has the same main Attributes and entries. |
Attributes |
getAttributes(String name)
Returns the Attributes for the specified entry name. |
Map<String,Attributes> |
getEntries()
Returns a Map of the entries contained in this Manifest. |
Attributes |
getMainAttributes()
Returns the main Attributes for the Manifest. |
int |
hashCode()
Returns the hash code for this Manifest. |
void |
read(InputStream is)
Reads the Manifest from the specified InputStream. |
void |
write(OutputStream out)
Writes the Manifest to the specified OutputStream. |
Methods inherited from class java.lang.Object |
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finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public Manifest()
public Manifest(InputStream is) throws IOException
is
- the input stream containing manifest data
IOException
- if an I/O error has occuredpublic Manifest(Manifest man)
man
- the Manifest to copyMethod Detail |
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public Attributes getMainAttributes()
public Map<String,Attributes> getEntries()
null
key, but no entry with a null key is
created by read(java.io.InputStream)
, nor is such an entry written by using write(java.io.OutputStream)
.
public Attributes getAttributes(String name)
return (Attributes)getEntries().get(name)Though
null
is a valid name
, when
getAttributes(null)
is invoked on a Manifest
obtained from a jar file, null
will be returned. While jar
files themselves do not allow null
-named attributes, it is
possible to invoke getEntries()
on a Manifest
, and
on that result, invoke put
with a null key and an
arbitrary value. Subsequent invocations of
getAttributes(null)
will return the just-put
value.
Note that this method does not return the manifest's main attributes;
see getMainAttributes()
.
name
- entry name
public void clear()
public void write(OutputStream out) throws IOException
out
- the output stream
IOException
- if an I/O error has occurredgetMainAttributes()
public void read(InputStream is) throws IOException
is
- the input stream
IOException
- if an I/O error has occurredpublic boolean equals(Object o)
equals
in class Object
o
- the object to be compared
Object.hashCode()
,
Hashtable
public int hashCode()
hashCode
in class Object
Object.equals(java.lang.Object)
,
Hashtable
public Object clone()
public Object clone() { return new Manifest(this); }
clone
in class Object
Cloneable
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Java™ Platform Standard Ed. 6 |
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