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public class Flags extends Object implements Cloneable, Serializable
The Flags class represents the set of flags on a Message. Flags are composed of predefined system flags, and user defined flags.
A System flag is represented by the Flags.Flag
inner class. A User defined flag is represented as a String.
User flags are case-independent.
A set of standard system flags are predefined. Most folder
implementations are expected to support these flags. Some
implementations may also support arbitrary user-defined flags. The
getPermanentFlags
method on a Folder returns a Flags
object that holds all the flags that are supported by that folder
implementation.
A Flags object is serializable so that (for example) the use of Flags objects in search terms can be serialized along with the search terms.
Warning: Serialized objects of this class may not be compatible with future JavaMail API releases. The current serialization support is appropriate for short term storage.
The below code sample illustrates how to set, examine and get the flags for a message.
Message m = folder.getMessage(1); m.setFlag(Flags.Flag.DELETED, true); // set the DELETED flag // Check if DELETED flag is set of this message if (m.isSet(Flags.Flag.DELETED)) System.out.println("DELETED message"); // Examine ALL system flags for this message Flags flags = m.getFlags(); Flags.Flag[] sf = flags.getSystemFlags(); for (int i = 0; i < sf.length; i++) { if (sf[i] == Flags.Flag.DELETED) System.out.println("DELETED message"); else if (sf[i] == Flags.Flag.SEEN) System.out.println("SEEN message"); ...... ...... }
Nested Class Summary | |
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static class |
This inner class represents an individual system flag. |
Constructor Summary | |
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Flags() Construct an empty Flags object. |
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Construct a Flags object initialized with the given flags. |
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Flags(Flags.Flag flag) Construct a Flags object initialized with the given system flag. |
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Construct a Flags object initialized with the given user flag. |
Method Summary | |
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void |
Add all the flags in the given Flags object to this Flags object. |
void |
add(Flags.Flag flag) Add the specified system flag to this Flags object. |
void |
Add the specified user flag to this Flags object. |
Object |
clone() Returns a clone of this Flags object. |
boolean |
Check whether all the flags in the specified Flags object are present in this Flags object. |
boolean |
contains(Flags.Flag flag) Check whether the specified system flag is present in this Flags object. |
boolean |
Check whether the specified user flag is present in this Flags object. |
boolean |
Check whether the two Flags objects are equal. |
Flags.Flag[] |
Return all the system flags in this Flags object. |
String[] |
Return all the user flags in this Flags object. |
int |
hashCode() Compute a hash code for this Flags object. |
void |
Remove all flags in the given Flags object from this Flags object. |
void |
remove(Flags.Flag flag) Remove the specified system flag from this Flags object. |
void |
Remove the specified user flag from this Flags object. |
Constructor Detail |
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public Flags()
public Flags(Flags flags)
flags
- the flags for initializationpublic Flags(Flags.Flag flag)
flag
- the flag for initializationpublic Flags(String flag)
flag
- the flag for initializationMethod Detail |
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public void add(Flags f)
f
- Flags objectpublic void add(Flags.Flag flag)
flag
- the flag to addpublic void add(String flag)
flag
- the flag to addpublic Object clone()
clone
in class Object
public boolean contains(Flags f)
f
public boolean contains(Flags.Flag flag)
flag
public boolean contains(String flag)
flag
public boolean equals(Object obj)
equals
in class Object
obj
public Flags.Flag[] getSystemFlags()
public String[] getUserFlags()
public int hashCode()
hashCode
in class Object
public void remove(Flags f)
f
- the flag to be removedpublic void remove(Flags.Flag flag)
flag
- the flag to be removedpublic void remove(String flag)
flag
- the flag to be removed
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