package cai;
import java.awt.Color;
import java.awt.Dimension;import java.awt.FlowLayout;import java.awt.Font;import java.awt.GridLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.text.NumberFormat;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JScrollPane;import javax.swing.JTextArea;import javax.swing.JTextField;public class cch extends JFrame{private JLabel a1;private JLabel a2;private JLabel a3;private JTextField b1;private JTextField b2;private JTextField b3;private JButton c1;private JButton c2;private JButton c3;private JTextArea text;public cch(){creatComponents();layoutComponents();registerHandlers();setTitle("复利存款应用程序（守护）");setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);pack();}private void creatComponents(){a1=new JLabel("本金");//a1.setFont("宋体",Font.BOLD,18);a2=new JLabel("年利率");a3=new JLabel("年数");b1=new JTextField(10);b2=new JTextField(10);b3=new JTextField(10);c1=new JButton("计算");c3=new JButton("诺诺");c3.setBackground(Color.GREEN);c3.setToolTipText("LOVE YOU FOREVER");c2=new JButton("清除");text=new JTextArea();}private void layoutComponents(){setLayout(new FlowLayout());JPanel panel1=new JPanel();panel1.add(a1);panel1.add(b1);JPanel panel2=new JPanel();panel2.add(a2);panel2.add(b2);JPanel panel3=new JPanel();panel3.add(a3);panel3.add(b3);JPanel panel4=new JPanel();panel4.add(c1);panel4.add(c3);panel4.add(c2);JPanel leftpanel=new JPanel(new GridLayout(4,1));leftpanel.add(panel1);leftpanel.add(panel2);leftpanel.add(panel3);leftpanel.add(panel4);JScrollPane panel5=new JScrollPane(text);panel5.setPreferredSize(new Dimension(200,150));add(leftpanel);add(panel5);}private void registerHandlers(){c1ActionEventHander hander1=new c1ActionEventHander();c1.addActionListener(hander1);c2ActionEventHander hander2=new c2ActionEventHander();c2.addActionListener(hander2);c3ActionEventHander hander3=new c3ActionEventHander();c3.addActionListener(hander3);}private class c1ActionEventHander implements ActionListener{public void actionPerformed(ActionEvent e){double principal;double amount;double rate;int n;NumberFormat currencyformatter=NumberFormat.getCurrencyInstance();String output="年"+"\t"+"复利存款"+"\n";int year=1;principal=Double.parseDouble(b1.getText());rate=Double.parseDouble(b2.getText());n=Integer.parseInt(b3.getText());while(year<=n){//amount=principal*Math.pow(1+rate,year);amount=principal*(1+rate*year);//amount=principal/(1+rate*year);output+=String.valueOf(year)+"\t"+currencyformatter.format(amount)+"\n";year=year+1;}text.setText(output);}}private class c2ActionEventHander implements ActionListener{public void actionPerformed(ActionEvent e){b1.setText("");b2.setText("");b3.setText("");text.setText("");}}private class c3ActionEventHander implements ActionListener{public void actionPerformed(ActionEvent e){b1.setText("");b2.setText("");b3.setText("");text.setText("守护 love 花姑娘");}}public static void main(String[] args){cch frame=new cch();frame.setVisible(true);frame.setSize(450,200);frame.setResizable(false);}}

实现功能点：

1.输入本金、利率、年限复利、单利计算存款；

2.输入利率、年限、存款复利、单利计算本金；

3.一键清除输入框内数据。