Thread: Help with school project

Hi, i´m new to this forum and to java as well, my name is Matti and are from Iceland

i´m trying to make number sequence with one TextArea and one Button, using '\n' and '\t'
the result should look like this:
1 1 1
2 3 4
3 5 9
. . .
. . .
. . .
15 29 225

row 1: line number, row 2: odd number, and row 3: is sum of the numbers in row 2 1 - 1+3 - 1+3+5 and so on

this is what i got so far:

import java.applet.Applet;
import java.awt.*;
 
public class talnarod extends Applet
{
	TextArea Ttafla;
	Button Bstart;
	int i, a, b, c;
 
	public void init()
	{
		Bstart = new Button("Start");
		Ttafla = new TextArea(15,25);
 
		this.add(Bstart);
		this.add(Ttafla);
	}
	public boolean action(Event e, Object o)
	{
		if (e.target == Bstart)
		{
			for (a=1; a <= 15; a++) // here is the column 1: number 1 to 15
			{
				for(b=1; b <= a; b++) // here is were i fail, column 2: odd numbers 1 to 29 
				{
				if( b % 2 != 0) // and after this i need column 3: sum of the numbers in column 2
				Ttafla.appendText("" + a + '\t' + b + '\n');
				}
			}
			return true;
		}
		return false;
	}
}

thanks and regards
Matti

solved

import java.applet.Applet;
import java.awt.*;
 
public class talnarod extends Applet
{
	TextArea Ttafla;
	Button Bstart;
	int i, a, b, c;
 
	public void init()
	{
		Bstart = new Button("Start");
		Ttafla = new TextArea(15,25);
 
		this.add(Bstart);
		this.add(Ttafla);
	}
	public boolean action(Event e, Object o)
	{
		if (e.target == Bstart)
		{
			for (a=1; a <= 15; a++) //here i set the length of the sequence 1 to 15
			{
				b = a+a-1; //odd numbers for second column
				c = 1; //and here i need help !!!
				Ttafla.appendText("" + a + '\t' + b + '\t' + c + '\n');
			}
			return true;
		}
		return false;
	}
}