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The Java Developers Almanac 1.4Order this book from Amazon. |
e340. Converting a Collection to an Array// Create an array containing the elements in a list Object[] objectArray = list.toArray(); MyClass[] array = (MyClass[])list.toArray(new MyClass[list.size()]); // Create an array containing the elements in a set objectArray = set.toArray(); array = (MyClass[])set.toArray(new MyClass[set.size()]); // Create an array containing the keys in a map objectArray = map.keySet().toArray(); array = (MyClass[])map.keySet().toArray(new MyClass[set.size()]); // Create an array containing the values in a map objectArray = map.values().toArray(); array = (MyClass[])map.values().toArray(new MyClass[set.size()]);
e1072. Filling Elements in an Array e339. Shuffling the Elements of a List or Array e341. Converting an Array to a Collection
© 2002 Addison-Wesley. |