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How many instances of class A does the following code create ??

A x, u, v;
x=new A();
A y=x;
A z=new A();
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A x, u, v;              // creating x,u,v reference variable of type A
x=new A();              // creating a new instance of class A and assigning it to reference variable x
A y=x;                  // assigning the instance x to another reference variable y of same type A
A z=new A();            // creating another instance of A and assigning to reference variable z

Therefore, only two instances of class A are created.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
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