[OmniFaces utilities (2.0)] Joins all elements of a collection to a single string, separated by the given separator

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[OmniFaces utilities] The joinCollection() function joins all elements of the given collection to a single string, separated by the given separator.

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Function:

Usage:

Let's suppose that we have a managed bean named PlayersBean that contains the following Set:

@Named

@ViewScoped

public class PlayerBean implements Serializable {

 private Set<String> players = new HashSet<>();

 public PlayerBean() {

  players.add("RAFAEL NADAL");

  players.add("NOVAK DJOKOVIC");

  players.add("STANISLAS WAWRINKA");

  players.add("JUAN MARTIN DEL POTRO");

  players.add("ROGER FEDERER");

 }

 public Set<String> getPlayers() {

  return players;

 }

 public void setPlayers(Set<String> players) {

  this.players = players;

 }

}

Now, in page, we can join this Set items into a String of items delimited by comma, as below:

Join players:

<strong>#{of:joinCollection(playerBean.players, ', ')}</strong>

Outputs:

Join players: RAFAEL NADAL, NOVAK DJOKOVIC, STANISLAS WAWRINKA, ROGER FEDERER, JUAN MARTIN DEL POTRO

API GH