Q:
阅读下列代码片段
class InterestTest________ActionListener{public void actionPerformed (ActionEvent event) {double interest = balance * rate/100;balance += interest;number Format format =Number Format.getCurrencyInstance ();System.out.printlb{"balance = "+Formatter.format (balance)};}private double rate;
}
在下划线处,应填的正确选项是:
A .Implementation
B .Inneritance
C .implements
D .extends
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