Java Program day1020

Clock program

1  PackageCom.lovo;2 3 ImportJava.util.Calendar;4 5 /**6 * Clock class7  */8  Public classClock {9     Private intHour//whenTen     Private intMinute//points One     Private intSecond//seconds A      -     /** - * Constructor the      */ -      PublicClock () { -Calendar cal =calendar.getinstance (); -hour = Cal.get (11); +minute = Cal.get (12); -Second = Cal.get (13); +     } A      at     /** - * Walk the word -      */ -      Public voidGo () { -second++; -         if(Second = = 60) { inSecond = 0; -minute++; to             if(Minute = = 60) { +minute = 0; -hour++; the                 if(Hour = = 24) { *Hour = 0; $                 }Panax Notoginseng             } -         } the     } +      A     /** the * Show Time +      * @returnstring of the current time -      */ $      PublicString ShowTime () { $String time = ""; -         if(Hour < 10) { -Time + = "0"; the         } -Time + = Hour + ":";Wuyi         if(Minute < 10) { theTime + = "0"; -         } WuTime + = minute + ":"; -         if(Second < 10) { AboutTime + = "0"; $         } -Time + =second; -         returnTime ; -     } A}

Validation Program

1  PackageCom.lovo;2 3  Public classTest04 {4 5      Public Static voidMain (string[] args)throwsException {6Clock C =NewClock ();7          while(true) {8 System.out.println (C.showtime ());9 c.go ();TenThread.Sleep (1000);//let the current program sleep for 1 seconds One         } A     } -}

Summarize:
Objects are all things that represent the real world, and an object represents a specific thing. Objects are primarily composed of properties and behaviors. A property is a representation of what the object is made of, and the behavior represents what the object can do. A class is the "blueprint" or "template" of an object.

Java Program day1020