"Software Testing" leap year issues (regardless of illegal input)

• Problem description
  • Enter year, whether the input year is leap years (regardless of illegal input)
  • The conditions for a year that are leap years are:
    • The year can be divisible by 4 but not divisible by 100 or
    • The year can be divisible by 400.
• Code implementation

ImportJavax.swing.JOptionPane;Importjavafx.application.Application;Importjavafx.event.ActionEvent;ImportJavafx.event.EventHandler;ImportJavafx.geometry.Pos;ImportJavafx.scene.Scene;ImportJavafx.scene.control.Button;ImportJavafx.scene.control.Label;ImportJavafx.scene.control.TextField;ImportJavafx.scene.layout.HBox;ImportJavafx.stage.Stage; Public classTaskextendsApplication { Public Static voidMain (string[] args) {//TODO auto-generated Method Stubtask.launch (args); }        PrivateTextField TextField =NewTextField (); @Override Public voidStart (Stage arg0)throwsException {//TODO auto-generated Method StubArg0.settitle ("Testing" ); HBox HBox=NewHBox (8 ); Textfield.setprefcolumncount (25 );        Hbox.setalignment (Pos.center_left); Button btn=NewButton (); Btn.settext (Submitted ); Btn.setonaction (NewListener ()); Hbox.getchildren (). AddAll (NewLabel ("Please enter year:"), TextField, BTN); Arg0.setscene (NewScene (Hbox, 460, 50 ));    Arg0.show (); }         Public classListenerImplementsEventhandler<actionevent>{@Override Public voidhandle (ActionEvent arg0) {//TODO auto-generated Method StubString str =Textfield.gettext (); String inf= ""; if(Isleap (Integer.parseint (str))) {inf= "Enter year for leap years"; }            Else{inf= "Enter year non-leap years"; } joptionpane.showmessagedialog (NULL, INF, "Information", Joptionpane.information_message); }    }        Private BooleanIsleap (intYear ) {        if(year% 4! = 0 ) {            return false; }        Else if(year% 100! = 0 ) {            return true; }        Else if(Year% 400! = 0 ) {            return false; }        Else {            return true; }    }}

• Test Cases

Number	Input		Predictive output
1	1963	Not divisible by 4.	Enter year non-leap years
2	1964	Can be divisible by 4 but not divisible by 100.	Enter years as leap year
3	1900	Divisible by 4 can be divisible by 100, but not divisible by 400.	Enter year non-leap years
4	2000	Can be divisible by 400.	Enter years as leap year

• Test results

"Software Testing" leap year issues (regardless of illegal input)