Java编写银行借存利息计算器

import java.awt.BorderLayout;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.xml.soap.Text;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedWriter;
import javax.swing.JLabel;
import javax.swing.JButton;
import javax.swing.JTextField;
import javax.swing.JComboBox;
import javax.swing.DefaultComboBoxModel;
public class lishu extends JFrame{
private JPanel contentPane;
private JTextField textField;
private JTextField textField_1;
private JTextField textField_3;
private JTextField textField_4;
private JTextField textField_5;
private JTextField textField_6;
private JTextField textField_2;
private JTextField textField_7;
private JTextField textField_8;
private JTextField textField_9;
private JTextField textField_10;
private JTextField textField_11;
private JTextField textField_12;
private JPanel panel;
private JLabel lblNewLabel;
private JPanel panel_2;
private JButton btnNewButton;
private JPanel panel_3;
private JPanel panel_4;
private JPanel panel_8;
private JLabel lblNewLabel_1;
private JPanel panel_9;
private JLabel lblNewLabel_2;
private JPanel panel_5;
private JPanel panel_10;
private JLabel lblNewLabel_3;
private JButton bu;
private JComboBox comboBox;
public static void main(String[] args) {
lishu frame = new lishu();
}
public lishu() {
setTitle("银行借存利息计算器");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 500, 478);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(new GridLayout(0, 1, 2, 0));
panel = new JPanel();
contentPane.add(panel);
panel.setLayout(new BorderLayout(0, 0));
lblNewLabel = new JLabel("存款利息计算");
panel.add(lblNewLabel, BorderLayout.NORTH);
panel_2 = new JPanel();
panel.add(panel_2, BorderLayout.SOUTH);
btnNewButton = new JButton("计算");
panel_2.add(btnNewButton);
panel_3 = new JPanel();
panel.add(panel_3, BorderLayout.CENTER);
panel_3.setLayout(new GridLayout(0, 1, 4, 0));
panel_4 = new JPanel();
panel_3.add(panel_4);
panel_4.setLayout(new GridLayout(1, 0, 0, 0));
panel_8 = new JPanel();
panel_4.add(panel_8);
lblNewLabel_1 = new JLabel("存款金额");
panel_8.add(lblNewLabel_1);
textField = new JTextField();
panel_8.add(textField);
textField.setColumns(10);
JLabel lblNewLabel_16 = new JLabel("元");
panel_8.add(lblNewLabel_16);
JLabel label_3 = new JLabel("");
panel_8.add(label_3);
panel_9 = new JPanel();
panel_4.add(panel_9);
lblNewLabel_2 = new JLabel("到期利息");
panel_9.add(lblNewLabel_2);
textField_1 = new JTextField();
panel_9.add(textField_1);
textField_1.setColumns(10);
panel_5 = new JPanel();
panel_3.add(panel_5);
panel_5.setLayout(new GridLayout(1, 0, 0, 0));
panel_10 = new JPanel();
panel_5.add(panel_10);
lblNewLabel_3 = new JLabel("存款时间");
panel_10.add(lblNewLabel_3);
comboBox = new JComboBox();
comboBox.setModel(new DefaultComboBoxModel(new String[] {"1", "2", "3"}));
panel_10.add(comboBox);
JLabel label = new JLabel("年");
panel_10.add(label);
JPanel panel_11 = new JPanel();
panel_5.add(panel_11);
JLabel lblNewLabel_4 = new JLabel("到期本息");
panel_11.add(lblNewLabel_4);
textField_3 = new JTextField();
panel_11.add(textField_3);
textField_3.setColumns(10);
JPanel panel_6 = new JPanel();
panel_3.add(panel_6);
panel_6.setLayout(new GridLayout(1, 0, 0, 0));
JPanel panel_12 = new JPanel();
panel_6.add(panel_12);
JLabel lblNewLabel_5 = new JLabel("存款利率");
panel_12.add(lblNewLabel_5);
textField_4 = new JTextField();
panel_12.add(textField_4);
textField_4.setColumns(10);
JLabel label_1 = new JLabel("%");
panel_12.add(label_1);
JPanel panel_13 = new JPanel();
panel_6.add(panel_13);
JLabel lblNewLabel_6 = new JLabel("到期时间");
panel_13.add(lblNewLabel_6);
textField_5 = new JTextField();
panel_13.add(textField_5);
textField_5.setColumns(10);
JPanel panel_7 = new JPanel();
panel_3.add(panel_7);
panel_7.setLayout(new GridLayout(1, 0, 0, 0));
JPanel panel_14 = new JPanel();
panel_7.add(panel_14);
JLabel lblNewLabel_7 = new JLabel("起始时间");
panel_14.add(lblNewLabel_7);
textField_6 = new JTextField();
panel_14.add(textField_6);
textField_6.setColumns(10);
JPanel panel_15 = new JPanel();
panel_7.add(panel_15);
JPanel panel_1 = new JPanel();
contentPane.add(panel_1);
panel_1.setLayout(new BorderLayout(0, 0));
JLabel lblNewLabel_8 = new JLabel("存款利息计算");
panel_1.add(lblNewLabel_8, BorderLayout.NORTH);
JPanel panel_16 = new JPanel();
panel_1.add(panel_16, BorderLayout.SOUTH);
bu = new JButton("计算");
panel_16.add(bu);
//
bu.addActionListener(this);

JPanel panel_17 = new JPanel();
panel_1.add(panel_17, BorderLayout.CENTER);
panel_17.setLayout(new GridLayout(0, 1, 4, 0));
JPanel panel_18 = new JPanel();
panel_17.add(panel_18);
panel_18.setLayout(new GridLayout(1, 0, 0, 0));
JPanel panel_22 = new JPanel();
panel_18.add(panel_22);
JLabel lblNewLabel_9 = new JLabel("贷款金额");
panel_22.add(lblNewLabel_9);
textField_2 = new JTextField();
panel_22.add(textField_2);
textField_2.setColumns(10);
JLabel lblNewLabel_17 = new JLabel("元");
panel_22.add(lblNewLabel_17);
JPanel panel_23 = new JPanel();
panel_18.add(panel_23);
JLabel lblNewLabel_10 = new JLabel("应还利息");
panel_23.add(lblNewLabel_10);
textField_7 = new JTextField();
panel_23.add(textField_7);
textField_7.setColumns(10);
JPanel panel_19 = new JPanel();
panel_17.add(panel_19);
panel_19.setLayout(new GridLayout(1, 0, 0, 0));
JPanel panel_26 = new JPanel();
panel_19.add(panel_26);
JLabel lblNewLabel_11 = new JLabel("贷款时间");
panel_26.add(lblNewLabel_11);
textField_8 = new JTextField();
panel_26.add(textField_8);
textField_8.setColumns(10);
JLabel label_2 = new JLabel("%");
panel_26.add(label_2);
JPanel panel_27 = new JPanel();
panel_19.add(panel_27);
JLabel lblNewLabel_12 = new JLabel("应还本息");
panel_27.add(lblNewLabel_12);
textField_9 = new JTextField();
panel_27.add(textField_9);
textField_9.setColumns(10);
JPanel panel_20 = new JPanel();
panel_17.add(panel_20);
panel_20.setLayout(new GridLayout(1, 0, 0, 0));
JPanel panel_24 = new JPanel();
panel_20.add(panel_24);
JLabel lblNewLabel_13 = new JLabel("贷款利率");
panel_24.add(lblNewLabel_13);
textField_10 = new JTextField();
panel_24.add(textField_10);
textField_10.setColumns(10);
JPanel panel_25 = new JPanel();
panel_20.add(panel_25);
JLabel lblNewLabel_14 = new JLabel("还款时间");
panel_25.add(lblNewLabel_14);
textField_11 = new JTextField();
panel_25.add(textField_11);
textField_11.setColumns(10);
JPanel panel_21 = new JPanel();
panel_17.add(panel_21);
panel_21.setLayout(new GridLayout(1, 0, 0, 0));
JPanel panel_28 = new JPanel();
panel_21.add(panel_28);
JLabel lblNewLabel_15 = new JLabel("贷款日期");
panel_28.add(lblNewLabel_15);
textField_12 = new JTextField();
panel_28.add(textField_12);
textField_12.setColumns(10);
JPanel panel_29 = new JPanel();
panel_21.add(panel_29);
setVisible(true);
bu.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
Double i1 = new Double(textField_2.getText());
Double i4 = new Double(textField_8.getText());
Double i2 = new Double(textField_10.getText());
Double i3 = new Double(textField_12.getText());
textField_7.setText(i1*i4*i2*0.01+"");
textField_9.setText(i1*i4*i2*0.01+i1+"");
textField_11.setText(i4+i3+"");
}
});
btnNewButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
Double i1 = new Double(textField.getText());
Double i4 = new Double(comboBox.getSelectedItem().toString());
Double i2 = new Double(textField_4.getText());
Double i3 = new Double(textField_6.getText());
textField_1.setText(i1*i4*i2*0.01+"");
textField_3.setText(i1*i4*i2*0.01+i1+"");
textField_5.setText(i4+i3+"");
}
});
}
}