package com.javaproficiency.demo; import java.util.Collection; import org.jivesoftware.smack.ConnectionConfiguration; import org.jivesoftware.smack.Roster; import org.jivesoftware.smack.RosterEntry; import org.jivesoftware.smack.XMPPConnection; import org.jivesoftware.smack.XMPPException; public class GETRoster { public static
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