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dungtv Explainer
Asked At: 1628499743000 In: Programming
dungtv Explainer Asked At: 1628499743000 In: Programming
Khi nào thì lớp cha cast được thành lớp con?
Khi nào thì lớp cha cast được thành lớp con?
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cast
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tvd12 Enlightened
Added an answer at: 1628500001000
tvd12 Enlightened
The Best Answer
Added an answer at: 1628500001000
Ví dụ mình có 2 lớp thế này: 
class A {
    // do something
}

class B extends A {
    // do something
}
A a = new B();B b = (B)a;
thôi em ạ
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