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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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package org.jgroups.util;

/**
 * Keeps a reference to another object
 * @author Bela Ban
 * @since  5.2
 */
public class Ref {
    protected T obj;

    public Ref(T obj) {
        this.obj=obj;
    }

    public T get() {return obj;}

    public Ref set(T obj) {
        this.obj=obj;
        return this;
    }

    public boolean isSet() {return obj != null;}

    public String toString() {
        return String.format("ref<%s>", obj);
    }
}