Module jakarta.mail
Package jakarta.mail

Class Flags

java.lang.Object
jakarta.mail.Flags
All Implemented Interfaces:
Serializable, Cloneable
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 Jakarta Mail 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 on 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");
      ......
      ......
 }
See Also: