Java classes and Object Foundation questions

Write Java applications. First, define a clock class--clock, which consists of three int types

Member variables represent hours, minutes, seconds, and a construction method for three member variables (hours, minutes, seconds)

For initialization, there is also a member method show () to display the time of the clock object. Second, redefine

A main class,TestClass, creates objects of multiple clock classes in the main method of themaster Class , using this

Some objects call the method show () to display the time of the clock.

 Public classClock {inthour; intmin; intsec; Clock (intHintMints) { This. hour=h;  This. min=m;  This. sec=s; }     voidShou () {if(hour>=0&&hour<24) && (min>=0&&min<60) && (sec>=0&&sec< 60)) System.out.println (Hour+ ":" +min+ ":" +sec); ElseSystem.out.println ("Time entered is incorrect"); }     Public Static voidMain (string[] args) {Clock Shijian=NewClock (12,30,45); Clock Shijian1=NewClock (25,20,61); Clock shijian2=NewClock (8,15,59);        Shijian.shou ();        Shijian1.shou ();    Shijian2.shou (); }}

Write Java applications. First, define an account class that describes the bank accounts , including the member changes

Amount "Account" and "Deposit balance", the Member method has "deposit", "withdrawal" and "balance inquiry". Secondly

Write a main class that tests the function of the account class in the main class.

 Public classAccount {String Zhanghao; DoubleYuE; Account (String Zhanghao,DoubleYuE) {         This. zhanghao=Zhanghao;  This. Yue=YuE; }    DoubleCunkuan (DoubleQianshu) {                if(qianshu<0) System.out.println ("Money Error"); Else           This. yue+=Qianshu; return  This.    YuE; }    voidQukuan (DoubleQianshu) {        if(qianshu> This. YuE) {System.out.println ("Insufficient balance"); return; }         This. yue-=Qianshu; }        DoubleGetyue () {return  This.    YuE; }     Public Static voidMain (string[] args) {Account AC=NewAccount ("123456", 1000); Ac.cunkuan (500); System.out.println ("Balance" +Ac.getyue ()); Ac.qukuan (300); System.out.println ("Balance" +Ac.getyue ()); Ac.cunkuan (-200); System.out.println ("Balance" +Ac.getyue ()); Ac.qukuan (2000); System.out.println ("Balance" +Ac.getyue ()); }}

Java classes and Object Foundation questions