java编windos计算器代码.doc

package cal; import java.awt.BorderLayout; import java.awt.Color; import java.awt.Dimension; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.math.BigDecimal; import java.util.Arrays; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JTextArea; import javax.swing.JTextField; import javax.swing.border.EmptyBorder; public class Cal { public static void main(String[] args) { // TODO code application logic here CalFrame cal = new CalFrame(); cal.setSize(365,250); cal.setVisible(true); cal.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } } class CalFrame extends JFrame { private String[] nOp = {7,8,9,/,sqrt,4,5,6,*,%,1,2,3,-,1/x,0,+/-,.,+,=}; private String[] mOp = {MC,MR,MS,M+}; private String[] rOp = {BACK,CE,C}; private String opString = +-*/; private JButton button = new JButton(); private CalService service = new CalService(); private JPanel panel; private JTextField textField1; private JTextField textField2; private JTextArea textArea; private JButton[] mButton; private JPanel panel1;//放置文本框 private JPanel panel2;//放置按钮m private JButton[] rButton; private JPanel panel3;// private JPanel panel31;//放置按钮r private JButton[] nButton;//放置数字及其他按钮 private JPanel panel32; public CalFrame() { super(); initialize(); } public void initialize()//初始化计算器界面 { this.setTitle(Window计算器); panel = new JPanel(); panel.setLayout(new BorderLayout(10,1)); panel1 = new JPanel(new BorderLayout()); panel1.setBackground(Color.WHITE); getTextField(); panel1.add(textField1,BorderLayout.CENTER); panel1.add(textField2,BorderLayout.NORTH); panel2 = new JPanel(); mButton = getMButton(); panel2.setLayout(new GridLayout(5,1,0,5))