Class: java.util.jar.Attributes
The Attributes class maps Manifest attribute names to associated string
values. Valid attribute names are case-insensitive, are restricted to
the ASCII characters in the set [0-9a-zA-Z_-], and cannot exceed 70
characters in length. Attribute values can contain any characters and
will be UTF8-encoded when written to the output stream. See the
JAR File Specification
for more information about valid attribute names and values.
Methods
-
Attributestop
public Attributes()Constructs a new, empty Attributes object with default size. -
Attributestop
public Attributes(int size)Constructs a new, empty Attributes object with the specified initial size. -
Attributestop
public Attributes(Attributes attr)Constructs a new Attributes object with the same attribute name-value mappings as in the specified Attributes. -
cleartop
public void clear()Removes all attributes from this Map. -
clonetop
public Object clone()Returns a copy of the Attributes, implemented as follows:public Object clone() { return new Attributes(this); }Since the attribute names and values are themselves immutable, the Attributes returned can be safely modified without affecting the original. -
containsKeytop
public boolean containsKey(Object name)Returns true if this Map contains the specified attribute name (key).- Specified by:
- containsKey from Map<Object, Object>
-
containsValuetop
public boolean containsValue(Object value)Returns true if this Map maps one or more attribute names (keys) to the specified value.- Specified by:
- containsValue from Map<Object, Object>
-
entrySettop
Returns a Collection view of the attribute name-value mappings contained in this Map. -
equalstop
public boolean equals(Object o)Compares the specified Attributes object with this Map for equality. Returns true if the given object is also an instance of Attributes and the two Attributes objects represent the same mappings. -
gettop
Returns the value of the specified attribute name, or null if the attribute name was not found. -
getValuetop
Returns the value of the specified attribute name, specified as a string, or null if the attribute was not found. The attribute name is case-insensitive.This method is defined as:
return (String)get(new Attributes.Name((String)name)); -
getValuetop
Returns the value of the specified Attributes.Name, or null if the attribute was not found.This method is defined as:
return (String)get(name); -
hashCodetop
public int hashCode()Returns the hash code value for this Map. -
isEmptytop
public boolean isEmpty()Returns true if this Map contains no attributes. -
keySettop
Returns a Set view of the attribute names (keys) contained in this Map. -
puttop
Associates the specified value with the specified attribute name (key) in this Map. If the Map previously contained a mapping for the attribute name, the old value is replaced. -
putAlltop
public void putAll(Map<?> attr)Copies all of the attribute name-value mappings from the specified Attributes to this Map. Duplicate mappings will be replaced. -
putValuetop
Associates the specified value with the specified attribute name, specified as a String. The attributes name is case-insensitive. If the Map previously contained a mapping for the attribute name, the old value is replaced.This method is defined as:
return (String)put(new Attributes.Name(name), value); -
readtop
-
removetop
Removes the attribute with the specified name (key) from this Map. Returns the previous attribute value, or null if none. -
sizetop
public int size()Returns the number of attributes in this Map. -
valuestop
public Collection<Object> values()Returns a Collection view of the attribute values contained in this Map. -
writetop
void write(DataOutputStream os) throws IOException -
writeMaintop
void writeMain(DataOutputStream out) throws IOException