Printing a Collection in N columns

Question

I am trying to write a class that takes a Collection of Objects and prints them in a specified number of columns. However, it never works. All that ever prints is a blank page. Here's my code:
import java.awt.print.*;
import java.util.*;
import java.awt.*;
public class PrintList implements Printable{
  private Vector list;
  private int index=0,col;
  public PrintList(Collection v,int c){
    list=new Vector(v);
    col=c;
  public int print(Graphics g, PageFormat pf, int pi)throws PrinterException{
    Graphics2D g2=(Graphics2D)g;  // Calculate graphics dimensions
    int height=g2.getFontMetrics().getHeight();
    int width=(int)pf.getImageableWidth();
    double lines=Math.floor(pf.getImageableHeight()/height);
    double pages=Math.ceil(list.size()/lines/col);
    if(pi>=pages){
      index=0;
      return Printable.NO_SUCH_PAGE;
    g2.translate(pf.getImageableX(),pf.getImageableY());
    for(int i=1;i<=lines && index<list.size();i++){
      for(int j=0;j<col && index<list.size();j++){
        String text=list.get(index).toString();
        g2.drawString(text,j*width/col,i*height);
        if(j==col-1)  text+='\n';       // Format text to display what
        else          text+='\t';       // should be printed
        System.out.print(text);
        index++;
    return Printable.PAGE_EXISTS;
  public static void main(String[] args){  // args[0] = # of items in test list
    try{                                   // args[1] = # of columns
      int size=Integer.parseInt(args[0]);
      int cols=Integer.parseInt(args[1]);
      Vector list=new Vector();
      for(int i=0;i<size;i++)
        list.add(new Integer(i));
      PrintList plist=new PrintList(list,cols);
      PrinterJob printer=PrinterJob.getPrinterJob();
      printer.setPrintable(plist);
      printer.print();
    }catch(Exception e){
      e.printStackTrace();
}I'm using JDK 1.4.1_01 if that's important. Any help would be appreciated.
Ben

Answer 1

Your code is ok except for the for-loop in print() where you calculate the (x,y) co-ordinates. Just comment your for-loop and try with this:
g2.drawString("Testing..",50,50);
Now, you should be able to print.
So, work more on your for-loop.
iDriZ.