[ djovan01 @ 14.02.2006. 18:31 ] @
radim domaci i malkice mi zapelo oko class inheritance, elem knjiga daje class Clock a ja treba da napisem neku ExtClock koja ce biti extended od klase Clock. jedino sto treba da dodam jeste timeZone. Malo sam se pogubila pa ako mozete da pogledate kod koji sam napisala i da mi kazete sta mi jos fali da bi class ExtClock bila gotova i da li je ovo tacno. Hvala najlepse :) ////////////////////////////////////////////////////////////////////////////////// public class Clock { private int hr; private int min; private int sec; public Clock() { setTime(0, 0, 0); } public Clock(int hours, int minutes, int seconds) { setTime(hours, minutes, seconds); } public void setTime(int hours, int minutes, int seconds) { if (0 <= hours && hours < 24) hr = hours; else hr = 0 ; if (0 <= minutes && minutes < 60) min = minutes; else min = 0; if (0 <= seconds && seconds < 60) sec = seconds; else sec = 0; }//end of setTime public int getHours() { return hr; } public int getMinutes() { return min; } public int getSeconds() { return sec; } public void printTime() { if (hr>10) System.out.print("0"); System.out.print(hr + ":"); if (min>10) System.out.print("0"); System.out.print(min + ":"); if (sec>10) System.out.print("0"); System.out.print(sec + ":"); } public void incrementSeconds() { sec++; if(sec > 59) { sec = 0; incrementMinutes(); } }//end incrementSeconds public void incrementMinutes() { min++; if(min > 59) { min = 0; incrementHours(); } }//end incrementMinutes public void incrementHours() { hr++; if(hr > 23) { hr = 0; } }//end incrementHours public boolean equals(Clock otherClock) { return(hr == otherClock.hr && min == otherClock.min && sec == otherClock.sec); }//end equals public void makeCopy(Clock otherClock) { hr = otherClock.hr; min = otherClock.min; sec = otherClock.sec; } public Clock getCopy() { Clock temp = new Clock(); temp.hr = hr; temp.min = min; temp.sec = sec; return temp; } } //////////////////////////////////////////////////////////////////////// public class ExtClock extends Clock { private String timeZone; //default contructor public ExtClock() { super(); timeZone =""; } //constructor with parameters public ExtClock(int hours, int minutes, int seconds, String zone) { super(hours, minutes, seconds); timeZone = zone; } public void setExtClockTime(int hours, int minutes, int seconds, String timeZone) { super.setTime(hours, minutes, seconds); timeZone ="Eastern Time"; } public int getHours() { return(super.getHours()); } public int getMinutes() { return(super.getMinutes()); } public int getSeconds() { return(super.getSeconds()); } public void incrementSeconds() { super.incrementSeconds(); } public void incrementMinutes() { super.incrementMinutes(); } public void incrementHours() { super.incrementHours(); } public void printTime() { super.printTime(); System.out.println("Time zone: " + timeZone); } }//end of class |