简易计算器java版
import java.awt.*; import java.awt.event.*; import javax.swing.*; public class MyCalculator implements ActionListener { JFrame f; JMenu mEdit; JMenu mView; JMenu mHelp; JMenuItem mCopy; JMenuItem mPaste; JTextField tResult; JButton bNumber; JButton bOperator; JButton bOther; JButton bM; boolean isDouble=false;//是否为实数
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