Applet Question: Printing out a special string

[firewire]

Hey guys, ive been working on this applet for awhile and I can't get it.

I need to an applet that reads five numbers (each between 1 and 30). For each number read, it should draw a line containing that number of adjacent asterisks. For example, if input the number seven, it should print *******.


I have this but im not sure what kind of control structure to use that will check to see if the number is in 1-30 parameter and to loop to print out the "*"'s.

 

import javax.swing.*;
import java.awt.Graphics;

public class L5a1 extends JApplet{
    
    int  num1,
          a=1;
	
 
 public void init()
 {
 	
 String one,

 one =  JOptionPane.showInputDialog ( "Enter first number, 1-30 please:" );
  

 
  //converts string to integer
  num1 = Integer.parseInt(one);
 
  
  num1=a;
  num1=1;


 }

 public void paint ( Graphics g )
 {
 
 
 	for (num1=1; num1 > a; num1++)
 		{
 		g.drawString ( "*", num1, 10);
 		}
 	
 
 		
 
 }
 
}

Theres only 1 structure in for simplicty. Im not sure what to use for the the check on the 1-30 either. I need some real help on this one, i know what i want to do but don't know how to do it...

thanks
JW

[awoodland]

Assuming I've followed your question properly this should build up the string that you want to be printed.

int n;  /* Assuming this is going to have been set to the number */


String output = "";

if (n > 30 || n < 0 ) {
   /* Do some error stuff it it's too big here (or too small) */
}

for (int count = 0; count < n; count++) {
   /* Build up string of *s here */
   output += "*";
}

Hope that helps,
Alan

[cjard]

you dont specify whether you want these lines of *** to be drawn on top of each other.. alongside each other etc...

so you need to give more info

[firewire]

oh yeah, preferably on top of each other stacked.

[firewire]

import javax.swing.*;
import java.awt.Graphics;

public class L5a1 extends JApplet{
  
  int  num1,
  	 count;
      
	

public void init()
{
	
String one;

one =  JOptionPane.showInputDialog ( "Enter first number, 1-30 please:" );



//converts string to integer
num1 = Integer.parseInt(one);



}

public void paint ( Graphics g )
{

	String output = "";

	if (num1 > 30 || num1 < 0 ) 
	{
	   g.drawString("The number does not meet specs!", 10, 10);
	}

	for (int count = 0; count < num1; count++) 
	{
		g.drawString("*", count, 10);
	   output += "*";
	}
	



}

}

this is what i have now, but im not sure why the spacing of the astericks are so small, they are bunching up...

[cjard]

because youre putting them at single pixel spacing, when you call drawString() in the loop it draws:

* at x=0, y=10
* at x=1, y=10
* at x=2, y=10

do you see?

you may find it easier to make the string before you draw it, or you can multiply the x offset.. its up to you

str = ""
for(int i=0i<num1;i++){
  str = str + "*";
}
drawString(str, 0, 10);

or

drawString("*", count*10, 10)