Programming Forums > Application Development > Java

Eric the Red · Apr 5th, 2006, 3:19 AM

just want to know if i'm crazzy or if this actually does work

        

import java.awt.*;
import hsa.Console;
import java.util.Calendar;

class CalendarTime
        {
            public long milli;
            public long minute;
            public long rightNow;
            public long rightThen;
            //public Calendar() = Now;
            // contructor
            public CalendarTime ()
            {
                Calendar Now = Calendar.getInstance ();
                this.milli = Now.getTimeInMillis (); // contructs current time
                this.minute = this.milli / 60000;

                this.rightNow = this.minute;
                this.rightThen = this.minute + 10; //default is 10 minutes.
            }

            // used to set a different time limit
            public void setTime (int x)
            {
                this.rightThen = ( Now.getTimeInMillis () / 60000 + x);
            }

            public int getTimeLeft ()
            {
                return this.rightThen - this.rightNow; // time left
            }
        }


         CalendarTime expiryDate = new CalendarTime ();
        c.print (expiryDate.getTimeLeft ());

So am i crazzy or does this actually work? I'm making a "Calendar" object in the contructor from the Calendar class in my own class. The error that I get occurs in the blue writting. I can't use "Now." so what do i use?

If it does work can you help me out please? Turns out i'm learning quite a bit tonight :banana: (up to this point anyways).

The Dark · Apr 5th, 2006, 3:50 AM

At the moment you are making the "Now" variable local to your constructor. You were on the right track when you made it a member variable.

(Toggle Plain Text)

class CalendarTime
        {
            public long milli;
            public long minute;
            public long rightNow;
            public long rightThen;
            public Calendar Now;
            // contructor
            public CalendarTime ()
            {
                Now = Calendar.getInstance ();
                this.milli = Now.getTimeInMillis (); // contructs current time
                this.minute = this.milli / 60000;

                this.rightNow = this.minute;
                this.rightThen = this.minute + 10; //default is 10 minutes.
            }

            // used to set a different time limit
            public void setTime (int x)
            {
                this.rightThen = ( Now.getTimeInMillis () / 60000 + x);
            }

jaeusm · Apr 5th, 2006, 12:49 PM

That's quite the gratuitous use of the keyword "this". You don't really need to use it in your case.

Eric the Red · Apr 5th, 2006, 1:01 PM

Quote:

Originally Posted by jaeusm

That's quite the gratuitous use of the keyword "this". You don't really need to use it in your case.

lol.. thanks i'm just learning Java

Apr 5th, 2006, 3:19 AM	#1
Eric the Red Hobbyist Programmer Join Date: Feb 2006 Posts: 214 Rep Power: 0	Class inside another class just want to know if i'm crazzy or if this actually does work (Toggle Plain Text) import java.awt.; import hsa.Console; import java.util.Calendar; class CalendarTime { public long milli; public long minute; public long rightNow; public long rightThen; //public Calendar() = Now; // contructor public CalendarTime () { Calendar Now = Calendar.getInstance (); this.milli = Now.getTimeInMillis (); // contructs current time this.minute = this.milli / 60000; this.rightNow = this.minute; this.rightThen = this.minute + 10; //default is 10 minutes. } // used to set a different time limit public void setTime (int x) { this.rightThen = ( Now.getTimeInMillis () / 60000 + x); } public int getTimeLeft () { return this.rightThen - this.rightNow; // time left } } CalendarTime expiryDate = new CalendarTime (); c.print (expiryDate.getTimeLeft ()); import java.awt.; import hsa.Console; import java.util.Calendar; class CalendarTime { public long milli; public long minute; public long rightNow; public long rightThen; //public Calendar() = Now; // contructor public CalendarTime () { Calendar Now = Calendar.getInstance (); this.milli = Now.getTimeInMillis (); // contructs current time this.minute = this.milli / 60000; this.rightNow = this.minute; this.rightThen = this.minute + 10; //default is 10 minutes. } // used to set a different time limit public void setTime (int x) { this.rightThen = ( Now.getTimeInMillis () / 60000 + x); } public int getTimeLeft () { return this.rightThen - this.rightNow; // time left } } CalendarTime expiryDate = new CalendarTime (); c.print (expiryDate.getTimeLeft ()); So am i crazzy or does this actually work? I'm making a "Calendar" object in the contructor from the Calendar class in my own class. The error that I get occurs in the blue writting. I can't use "Now." so what do i use? If it does work can you help me out please? Turns out i'm learning quite a bit tonight :banana: (up to this point anyways). __________________ Death smiles at us all. All a man can do is smile back.

Apr 5th, 2006, 3:50 AM	#2
The Dark Expert Programmer Join Date: Jun 2005 Posts: 893 Rep Power: 4	At the moment you are making the "Now" variable local to your constructor. You were on the right track when you made it a member variable. (Toggle Plain Text) class CalendarTime { public long milli; public long minute; public long rightNow; public long rightThen; public Calendar Now; // contructor public CalendarTime () { Now = Calendar.getInstance (); this.milli = Now.getTimeInMillis (); // contructs current time this.minute = this.milli / 60000; this.rightNow = this.minute; this.rightThen = this.minute + 10; //default is 10 minutes. } // used to set a different time limit public void setTime (int x) { this.rightThen = ( Now.getTimeInMillis () / 60000 + x); } class CalendarTime { public long milli; public long minute; public long rightNow; public long rightThen; public Calendar Now; // contructor public CalendarTime () { Now = Calendar.getInstance (); this.milli = Now.getTimeInMillis (); // contructs current time this.minute = this.milli / 60000; this.rightNow = this.minute; this.rightThen = this.minute + 10; //default is 10 minutes. } // used to set a different time limit public void setTime (int x) { this.rightThen = ( Now.getTimeInMillis () / 60000 + x); }

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Apr 5th, 2006, 12:49 PM	#3
jaeusm Programmer Join Date: Feb 2006 Location: Columbus, OH Posts: 84 Rep Power: 3	That's quite the gratuitous use of the keyword "this". You don't really need to use it in your case.

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Programming Forums > Application Development > Java

Class inside another class