Software testing-Leap year testing

Leap year detection is an important step for a program that needs to record years. The leap year rules for the Gregorian calendar are as follows:

1, the ordinary year can be divisible by 4 and not divisible by 100 for leap years. (For example, 2004 is a leap year, 1900 is not a leap)

2, Century can be divisible by 400 is a leap year. (as 2000 is a leap year, 1900 is not a leap year)however, for incorrect input, the program must respond to the hold, not to prevent the abnormal situation to hinder the operation of the program, the following is a leap year test program example:　　

Enter year	Results
2000	Leap
1900	Non-leap year
-1600	Illegal input
1864	Leap
Saddsa	Illegal input

　　

Code implementation:

Importjavafx.application.Application;Importjavafx.event.ActionEvent;ImportJavafx.event.EventHandler;ImportJavafx.scene.Scene;ImportJavafx.scene.control.Button;ImportJavafx.scene.control.TextField;ImportJavafx.scene.layout.AnchorPane;ImportJavafx.scene.text.Text;ImportJavafx.stage.Stage; Public classTest2extendsApplication { Public Static voidMain (string[] args) {test2.launch (args); }     Public voidStart (Stage primarystage) {primarystage.settitle ("Input Testing" ); Anchorpane Root=NewAnchorpane (); Text text=NewText ("Please enter Test year"); FinalText textans1 =NewText (""); FinalTextField Intext1 =NewTextField (""); Intext1.setmaxsize (140, 20); Anchorpane.settopanchor (text,40.0); Anchorpane.setleftanchor (text,100.0); Anchorpane.settopanchor (textans1,120.0); Anchorpane.setleftanchor (textans1,70.0); Anchorpane.settopanchor (Intext1,60.0); Anchorpane.setleftanchor (Intext1,70.0);          Root.getchildren (). AddAll (TEXT,INTEXT1);                Root.getchildren (). AddAll (TEXTANS1); Button btn=NewButton ("Submit");        Root.getchildren (). AddAll (BTN); Anchorpane.settopanchor (BTN,90.0); Anchorpane.setleftanchor (BTN,120.0); Btn.setonaction (NewEventhandler<actionevent>() {             Public voidhandle (ActionEvent arg0) {textans1.settext (check (Intext1.gettext (). toString ()));              }        }); Primarystage.setscene (NewScene (root,300,200));        Primarystage.show (); }             Publicstring Check (String str) {Try{            intYear =integer.parseint (str); if(Year <0)                return"Please enter the correct year"; if(Year% 100 ==0){                if(Year% 400 = = 0)                    returnStr+ "is a leap year"; }            Else{                if(year% 4 = = 0)                    returnStr+ "is a leap year"; }            }Catch(Exception e) {return"Illegal input"; }            returnstr+ "Not a leap year"; } }

Software testing-Leap year testing