How to use

SetOnce$AlreadySetException

in

org.apache.lucene.util

/** Sets the given object. If the object has already been set, an exception is thrown. */
public final void set(T obj) {
 if (set.compareAndSet(false, true)) {
  this.obj = obj;
 } else {
  throw new AlreadySetException();
 }
}

/** Sets the given object. If the object has already been set, an exception is thrown. */
public final void set(T obj) {
 if (set.compareAndSet(false, true)) {
  this.obj = obj;
 } else {
  throw new AlreadySetException();
 }
}

/** Sets the given object. If the object has already been set, an exception is thrown. */
public final void set(T obj) {
 if (set.compareAndSet(false, true)) {
  this.obj = obj;
 } else {
  throw new AlreadySetException();
 }
}

/** Sets the given object. If the object has already been set, an exception is thrown. */
public final void set(T obj) {
 if (set.compareAndSet(false, true)) {
  this.obj = obj;
 } else {
  throw new AlreadySetException();
 }
}