计算机二级

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 = ” +Format

题目

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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