How to Print using java source code

This java class enable you to print documents or receipts easily.You can customize this class to print A4,A3,Letter and other sizes.Try this class to integrate printing function to your java application.

It is free to try this class.Enjoy java.Share java.

	package default;
	import java.awt.Font;
	import java.awt.Graphics;
	import java.awt.Graphics2D;
	import java.awt.image.BufferedImage;
	import java.awt.print.PageFormat;
	import java.awt.print.Paper;
	import java.awt.print.Printable;
	import static java.awt.print.Printable.NO_SUCH_PAGE;
	import static java.awt.print.Printable.PAGE_EXISTS;
	import java.awt.print.PrinterException;
	import java.awt.print.PrinterJob;
	import java.io.IOException;
	import java.text.SimpleDateFormat;
	import java.util.Calendar;
	import javax.imageio.ImageIO;
	import javax.swing.JTable;
	import javax.swing.table.DefaultTableModel;
	import javax.swing.table.TableModel;
	/**
	*
	* @author All Open source developers
	* @version 1.0.0.0
	* @since 2014/12/22
	*/
	/*This Printsupport java class was implemented to get printout.
	* This class was specially designed to print a Jtable content to a paper.
	* Specially this class formated to print 7cm width paper.
	* Generally for pos thermel printer.
	* Free to customize this source code as you want.
	* Illustration of basic invoice is in this code.
	* demo by gayan liyanaarachchi
	*/
	public class Printsupport {
	static JTable itemsTable;
	public static int total_item_count=0;
	public static final String DATE_FORMAT_NOW = "yyyy-MM-dd HH:mm:ss a";
	public static String title[] = new String[] {"Item ID","Item Name","Price","Quantity"};
	public static void setItems(Object[][] printitem){
	Object data[][]=printitem;
	DefaultTableModel model = new DefaultTableModel();
	//assume jtable has 4 columns.
	model.addColumn(title[0]);
	model.addColumn(title[1]);
	model.addColumn(title[2]);
	model.addColumn(title[3]);
	int rowcount=printitem.length;
	addtomodel(model, data, rowcount);
	itemsTable = new JTable(model);
	}
	public static void addtomodel(DefaultTableModel model,Object [][]data,int rowcount){
	int count=0;
	while(count < rowcount){
	model.addRow(data[count]);
	count++;
	}
	if(model.getRowCount()!=rowcount)
	addtomodel(model, data, rowcount);
	System.out.println("Check Passed.");
	}
	public Object[][] getTableData (JTable table) {
	int itemcount=table.getRowCount();
	System.out.println("Item Count:"+itemcount);
	DefaultTableModel dtm = (DefaultTableModel) table.getModel();
	int nRow = dtm.getRowCount(), nCol =dtm.getColumnCount();
	Object[][] tableData = new Object[nRow][nCol];
	if(itemcount==nRow) //check is there any data loss.
	{
	for (int i = 0 ; i < nRow ; i++){
	for (int j = 0 ; j < nCol ; j++){
	tableData[i][j] = dtm.getValueAt(i,j); //pass data into object array.
	}}
	if(tableData.length!=itemcount){ //check for data losses in object array
	getTableData(table); //recursively call method back to collect data
	}
	System.out.println("Data check passed");
	}
	else{
	//collecting data again because of data loss.
	getTableData(table);
	}
	return tableData; //return object array with data.
	}
	public static PageFormat getPageFormat(PrinterJob pj){
	PageFormat pf = pj.defaultPage();
	Paper paper = pf.getPaper();
	double middleHeight =total_item_count*1.0; //dynamic----->change with the row count of jtable
	double headerHeight = 5.0; //fixed----->but can be mod
	double footerHeight = 5.0; //fixed----->but can be mod
	double width = convert_CM_To_PPI(7); //printer know only point per inch.default value is 72ppi
	double height = convert_CM_To_PPI(headerHeight+middleHeight+footerHeight);
	paper.setSize(width, height);
	paper.setImageableArea(
	convert_CM_To_PPI(0.25),
	convert_CM_To_PPI(0.5),
	width - convert_CM_To_PPI(0.35),
	height - convert_CM_To_PPI(1)); //define boarder size after that print area width is about 180 points
	pf.setOrientation(PageFormat.PORTRAIT); //select orientation portrait or landscape but for this time portrait
	pf.setPaper(paper);
	return pf;
	}
	protected static double convert_CM_To_PPI(double cm) {
	return toPPI(cm * 0.393600787);
	}
	protected static double toPPI(double inch) {
	return inch * 72d;
	}
	public static String now() {
	//get current date and time as a String output
	Calendar cal = Calendar.getInstance();
	SimpleDateFormat sdf = new SimpleDateFormat(DATE_FORMAT_NOW);
	return sdf.format(cal.getTime());
	}
	public static class MyPrintable implements Printable {
	@Override
	public int print(Graphics graphics, PageFormat pageFormat,
	int pageIndex) throws PrinterException {
	int result = NO_SUCH_PAGE;
	if (pageIndex == 0) {
	Graphics2D g2d = (Graphics2D) graphics;
	double width = pageFormat.getImageableWidth();
	double height = pageFormat.getImageableHeight();
	g2d.translate((int) pageFormat.getImageableX(),(int) pageFormat.getImageableY());
	Font font = new Font("Monospaced",Font.PLAIN,7);
	g2d.setFont(font);
	try {
	/*
	* Draw Image*
	assume that printing reciept has logo on top
	* that logo image is in .gif format .png also support
	* image resolution is width 100px and height 50px
	* image located in root--->image folder
	*/
	int x=100 ; //print start at 100 on x axies
	int y=10; //print start at 10 on y axies
	int imagewidth=100;
	int imageheight=50;
	BufferedImage read = ImageIO.read(getClass().getResource("/image/logo.gif"));
	g2d.drawImage(read,x,y,imagewidth,imageheight,null); //draw image
	g2d.drawLine(10, y+60, 180, y+60); //draw line
	} catch (IOException e) {
	e.printStackTrace();
	}
	try{
	/*Draw Header*/
	int y=80;
	g2d.drawString("ABC Shopping Complex", 40,y);
	g2d.drawString("CopyWrite 2009-2014", 50,y+10); //shift a line by adding 10 to y value
	g2d.drawString(now(), 10, y+20); //print date
	g2d.drawString("Cashier : admin", 10, y+30);
	/*Draw Colums*/
	g2d.drawLine(10, y+40, 180, y+40);
	g2d.drawString(title[0], 10 ,y+50);
	g2d.drawString(title[1], 50 ,y+50);
	g2d.drawString(title[2], 100 ,y+50);
	g2d.drawString(title[3], 150 ,y+50);
	g2d.drawLine(10, y+60, 180, y+60);
	int cH = 0;
	TableModel mod = itemsTable.getModel();
	for(int i = 0;i < mod.getRowCount() ; i++){
	/*Assume that all parameters are in string data type for this situation
	* All other premetive data types are accepted.
	*/
	String itemid = mod.getValueAt(i, 0).toString();
	String itemname = mod.getValueAt(i, 1).toString();
	String price = mod.getValueAt(i, 2).toString();
	String quantity = mod.getValueAt(i, 3).toString();
	cH = (y+70) + (10*i); //shifting drawing line
	g2d.drawString(itemid, 0, cH);
	g2d.drawString(itemname,50, cH);
	g2d.drawString(price , 100, cH);
	g2d.drawString(quantity , 150, cH);
	}
	/*Footer*/
	font = new Font("Arial",Font.BOLD,16) ; //changed font size
	g2d.setFont(font);
	g2d.drawString("Thank You Come Again",30, cH+10);
	//end of the reciept
	}
	catch(Exception r){
	r.printStackTrace();
	}
	result = PAGE_EXISTS;
	}
	return result;
	}
	}
	}
	/*
	################# THIS IS HOW TO USE THIS CLASS #######################
	Printsupport ps=new Printsupport();
	Object printitem [][]=ps.getTableData(jTable);
	ps.setItems(printitem);
	PrinterJob pj = PrinterJob.getPrinterJob();
	pj.setPrintable(new MyPrintable(),ps.getPageFormat(pj));
	try {
	pj.print();
	}
	catch (PrinterException ex) {
	ex.printStackTrace();
	}
	################## JOIN TO SHARE KNOWLADGE ###########################
	*/

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