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Preferring static factory methods over {{public}} or {{protected}} constructors also helps limit class extensibility. \[[Bloch 08|java:AA. Java References#Bloch 08]\]. Typically, a {{private}} constructor is explicitly provided to override the default no-argument {{public}} constructor. |
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class BankOperation {
private BankOperation() {
// ...
}
public static void factoryMethod() {
// ...
}
}
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A third solution is to provide a non-empty private constructor accessible only from within the class.
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class BankOperation {
private BankOperation() {
// ...
}
}
|
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