0311 the simple interest and expectation of software engineering compound interest

Package Ch1;import Java.awt.borderlayout;import Java.awt.component;import java.awt.dimension;import Java.awt.flowlayout;import Java.awt.graphics;import Java.awt.gridlayout;import Java.awt.Toolkit;import Java.awt.event.actionevent;import Java.awt.event.actionlistener;import Java.awt.image.bufferedimage;import Java.io.file;import Java.io.ioexception;import Java.text.numberformat;import Javax.imageio.imageio;import Javax.swing.imageicon;import Javax.swing.jbutton;import Javax.swing.jframe;import Javax.swing.JLabel;import Javax.swing.joptionpane;import Javax.swing.jpanel;import Javax.swing.jscrollpane;import Javax.swing.JTextArea; Import Javax.swing.jtextfield;import Org.omg.cosnaming.namingcontextextpackage.addresshelper;public class Fuli Extends JFrame {private static final long Serialversionuid = 3347254632537686808l;private JLabel A1;//Tag Private JLabel a 2;private JLabel a3;private JLabel a4;private JTextField B1; Principal private JTextField B2; Interest rate private JTextField B3; Year Private JteXtfield b4; Expected private JButton c1;private JButton c2;private JButton c3;private jtextarea text; Displays a multiline area of plain text private JPanel toolbar = new JPanel ();p ublic Fuli () {settitle ("Compound deposit Application"); Creatcomponents ();// Create part layoutcomponents (); Design part registerhandlers (); Mouse Monitor setdefaultcloseoperation (jframe.exit_on_close);p ack ();} private void Creatcomponents () {a1 = new JLabel ("Principal"), a2 = new JLabel ("annual interest rate"), a3 = new JLabel ("Number of Years"), A4 = new JLabel ("period B1 = new JTextField (ten), b2 = new JTextField, B3 = new JTextField (ten), B4 = new JTextField, C1 = new JButton ("compounding" C2 = new JButton ("clear"), C3 = New JButton ("simple Interest"); text = new JTextArea ();} private void Layoutcomponents () {setlayout (New FlowLayout ()); JPanel Panel1 = new JPanel ();p anel1.add (A1);p Anel1.add (B1); JPanel Panel2 = new JPanel ();p anel2.add (A2);p anel2.add (B2); JPanel panel3 = new JPanel ();p anel3.add (A3);p Anel3.add (B3); JPanel panel6 = new JPanel ();p anel6.add (A4);p anel6.add (B4); JPanel Leftpanel = new JPanel (New GridLayout (3, 1)); Leftpanel.add (PANEL1); Leftpanel.add (Panel2); Leftpanel.add (PANEL3); Leftpanel.add (PANEL6); JScrollPane Panel5 = new JScrollPane (text);p anel5.setpreferredsize (new Dimension (+)); Toolbar.add (C1); Toolbar.add (C2); Toolbar.add (C3); add (Leftpanel); add (Panel5); Add (toolbar, borderlayout.east);} 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 (); The string is converted to a numeric string output = "Year" + "/" + "compound deposit"; int year =1;rate = double.parsedouble (B2.gettext ()); n = Integer.parseint (b3. GetText ()), if (B1.gettext (). Equals ("")) {if (B4.gettext (). Equals ("")) {Joptionpane.showmessaGedialog (NULL, "Please enter the principal or expected value");} Else{amount = Double.parsedouble (B4.gettext ());p rincipal=0;while (year <= N) {principal=amount/(Math.pow (1 + rate, Year): Year = year + 1;} output= "Principal" +currencyformatter.format (Principal) + "\ n"; text.settext (output);}}  else {principal = Double.parsedouble (B1.gettext ());//String converted to numeric if (B4.gettext (). Equals ("")) {while (year <= N) {amount = Principal * MATH.POW (1 + rate, year), Output + = string.valueof (year) + "\t\t\t" + currencyformatter.format (amount) + "\ n" ; year = year + 1;} Text.settext (output);} Else{joptionpane.showmessagedialog (NULL, "the principal and expected value are entered in one can");}}} Private class C2actioneventhander implements ActionListener {public void actionperformed (ActionEvent e) {b1.settext ("") ; B2.settext (""); B3.settext (""); B4.settext (""); Text.settext ("");}} Private class C3actioneventhander implements ActionListener {public void actionperformed (ActionEvent e) {double Principal;double amount;double rate;int N; NumberFormat currencyformatter = Numberformat.getcurrencyinstance ();String output = "Year" + "/" + "simple interest deposit"; int year = 1;rate = Double.parsedouble (B2.gettext ()); n = integer.parseint (B3.gettext ()) ; if (B1.gettext () Equals ("")) {if (B4.gettext (). Equals ("")) {Joptionpane.showmessagedialog (null, "Enter the principal or expected value");} Else{amount = Double.parsedouble (B4.gettext ());p rincipal=0;while (year <= n) {principal = amount/(1 + rate* year); yea R = year + 1;} output= "Principal" +currencyformatter.format (Principal) + "\ n"; text.settext (output);}}  else {principal = Double.parsedouble (B1.gettext ());//String converted to numeric if (B4.gettext (). Equals ("")) {while (year <= N) {amount = Principal * (1 + rate* year), Output + = string.valueof (year) + "\t\t\t" + currencyformatter.format (amount) + "\ n"; year = Year + 1;} Text.settext (output);} Else{joptionpane.showmessagedialog (NULL, "the principal and expected value are entered in one can");}}} public static void Main (string[] args) {int Windowswidth=500;int Windowsheight=400;fuli frame = new Fuli (); frame.setvisib Le (True); Frame.setsize (Windowswidth, windowsheight); frame.setresizable (false); int width = Toolkit.Getdefaulttoolkit (). Getscreensize (). Width;int height = Toolkit.getdefaulttoolkit (). Getscreensize (). Height;        Frame.setlocation ((width-windowswidth)/2, (Height-windowsheight)/2); Window Center}}

interface and running results

0311 the simple interest and expectation of software engineering compound interest