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单项选择题 Which line contains a constructor in this class definition?()   public class Counter { // (1)   int current, step;   public Counter(int startValue, int stepValue) { // (2)   set(startValue);   setStepValue(stepValue);  }   public int get() { return current; } // (3)   public void set(int value) { current = value; } // (4)   public void setStepValue(int stepValue) { step = stepValue; } // (5)  }  

A、Code marked with (1) is a constructor

B、Code marked with (2) is a constructor

C、Code marked with (3) is a constructor

D、Code marked with (4) is a constructor

E、Code marked with (5) is a Constructor

  • B
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