Programming Forums > Application Development > Java

Esroh · May 21st, 2005, 1:42 PM

Hi
I've written some lines of codes but can't make it work. Can anyone help me and tell me what's the problem.

 
public class Point
{
  public static void main(String args[])
  {
	Pointing point1= new Pointing(2,3);
	Pointing point2= new Pointing(4,5);

	point1.displayDetails();
	point2.displayDetails();

  }


 class Pointing
 {
  Pointing(int XCoord, int YCoord)
  {
	  this.XCoord=XCoord;
	  this.YCoord=YCoord;

	  displayDetails()
	  {
		  System.out.println("(" + XCoord + "," + YCoord + ")");
	  }
  }
 }
}

kirkl_uk · May 21st, 2005, 2:41 PM

Two problems that I can see:

You need to declare member variables for the Pointing class to hold the coordinates.
Your displayDetails function needs a return type.

(Toggle Plain Text)

public class Point
{
  public static void main(String args[])
  {
	Pointing point1= new Pointing(2,3);
	Pointing point2= new Pointing(4,5);

	point1.displayDetails();
	point2.displayDetails();

  }


 class Pointing
 {
  private int XCoord = 0; 
  private int YCoord = 0;

  Pointing(int XCoord, int YCoord)
  {
	  this.XCoord=XCoord;
	  this.YCoord=YCoord;

	  void displayDetails()
	  {
		  System.out.println("(" + XCoord + "," + YCoord + ")");
	  }
  }
 }
}

Esroh · May 21st, 2005, 2:52 PM

Thanks a lot kirkl_uk!!!

Esroh · May 21st, 2005, 3:06 PM

I've tried it but it still doesn't work. It's about a ; about line 25 but i can't see where there is a ; missing.

JDStud6 · May 21st, 2005, 4:12 PM

displayDetails() cant be inside of the constructor Pointing...

(Toggle Plain Text)

public class Point
{
  public static void main(String args[])
  {
	Pointing point1= new Pointing(2,3);
	Pointing point2= new Pointing(4,5);

	point1.displayDetails();
	point2.displayDetails();

  }
}

(Toggle Plain Text)

class Pointing
 {
  private int XCoord = 0; 
  private int YCoord = 0;

  Pointing(int XCoord, int YCoord)
  {
	  this.XCoord=XCoord;
	  this.YCoord=YCoord;
  }
  public void displayDetails()
  {
	  System.out.println("(" + XCoord + "," + YCoord + ")");
  }

 }

JD

May 21st, 2005, 1:42 PM	#1
Esroh Newbie Join Date: May 2005 Posts: 8 Rep Power: 0	Coding problem. Help!!! Hi I've written some lines of codes but can't make it work. Can anyone help me and tell me what's the problem. (Toggle Plain Text) public class Point { public static void main(String args[]) { Pointing point1= new Pointing(2,3); Pointing point2= new Pointing(4,5); point1.displayDetails(); point2.displayDetails(); } class Pointing { Pointing(int XCoord, int YCoord) { this.XCoord=XCoord; this.YCoord=YCoord; displayDetails() { System.out.println("(" + XCoord + "," + YCoord + ")"); } } } } public class Point { public static void main(String args[]) { Pointing point1= new Pointing(2,3); Pointing point2= new Pointing(4,5); point1.displayDetails(); point2.displayDetails(); } class Pointing { Pointing(int XCoord, int YCoord) { this.XCoord=XCoord; this.YCoord=YCoord; displayDetails() { System.out.println("(" + XCoord + "," + YCoord + ")"); } } } }

May 21st, 2005, 2:41 PM	#2
kirkl_uk Programmer Join Date: Apr 2005 Location: England Posts: 86 Rep Power: 4	Two problems that I can see: You need to declare member variables for the Pointing class to hold the coordinates. Your displayDetails function needs a return type. (Toggle Plain Text) public class Point { public static void main(String args[]) { Pointing point1= new Pointing(2,3); Pointing point2= new Pointing(4,5); point1.displayDetails(); point2.displayDetails(); } class Pointing { private int XCoord = 0; private int YCoord = 0; Pointing(int XCoord, int YCoord) { this.XCoord=XCoord; this.YCoord=YCoord; void displayDetails() { System.out.println("(" + XCoord + "," + YCoord + ")"); } } } } public class Point { public static void main(String args[]) { Pointing point1= new Pointing(2,3); Pointing point2= new Pointing(4,5); point1.displayDetails(); point2.displayDetails(); } class Pointing { private int XCoord = 0; private int YCoord = 0; Pointing(int XCoord, int YCoord) { this.XCoord=XCoord; this.YCoord=YCoord; void displayDetails() { System.out.println("(" + XCoord + "," + YCoord + ")"); } } } } Last edited by kirkl_uk; May 21st, 2005 at 2:45 PM.

May 21st, 2005, 4:12 PM	#5
JDStud6 Programmer Join Date: Jan 2005 Location: Charleston, SC www.wareonearth.com Posts: 57 Rep Power: 4	displayDetails() cant be inside of the constructor Pointing... (Toggle Plain Text) public class Point { public static void main(String args[]) { Pointing point1= new Pointing(2,3); Pointing point2= new Pointing(4,5); point1.displayDetails(); point2.displayDetails(); } } public class Point { public static void main(String args[]) { Pointing point1= new Pointing(2,3); Pointing point2= new Pointing(4,5); point1.displayDetails(); point2.displayDetails(); } } (Toggle Plain Text) class Pointing { private int XCoord = 0; private int YCoord = 0; Pointing(int XCoord, int YCoord) { this.XCoord=XCoord; this.YCoord=YCoord; } public void displayDetails() { System.out.println("(" + XCoord + "," + YCoord + ")"); } } class Pointing { private int XCoord = 0; private int YCoord = 0; Pointing(int XCoord, int YCoord) { this.XCoord=XCoord; this.YCoord=YCoord; } public void displayDetails() { System.out.println("(" + XCoord + "," + YCoord + ")"); } } JD

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May 21st, 2005, 2:52 PM	#3
Esroh Newbie Join Date: May 2005 Posts: 8 Rep Power: 0	Thanks a lot kirkl_uk!!!

May 21st, 2005, 3:06 PM	#4
Esroh Newbie Join Date: May 2005 Posts: 8 Rep Power: 0	I've tried it but it still doesn't work. It's about a ; about line 25 but i can't see where there is a ; missing.

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Programming Forums > Application Development > Java

Coding problem. Help!!!