How to print a JTable object in the Java application

问题

Question Now once the data is fetched from the database and shown in the JTable object \"table\" embedded in the scrollPane, how do we create a print job that makes it possible to print the displayed table as such in A3 sized paper ?

My code to fetch the data from the database is shown below:

try 
{
    Class.forName(\"com.mysql.jdbc.Driver\"); 
    Connection con=DriverManager.getConnection(\"jdbc:mysql://localhost/newb\",\"root\",\"pass\");
    Statement stat=con.createStatement();   
    ResultSet res=stat.executeQuery(\"select * from table where name = \'\"+name+\"\'\");
    ResultSetMetaData rsmd = res.getMetaData();
    int colcount = rsmd.getColumnCount();
    Vector columns = new Vector(colcount);
        for(int i=3; i<=colcount; i++)
    {
        columns.add(rsmd.getColumnName(i));
    }
    Vector data = new Vector();
    Vector row;

    // Store row data
    while(res.next())
    {
        row = new Vector(colcount);
        for(int i=3; i<=colcount; i++)
        {
            row.add(res.getString(i));
        }
        data.add(row);
    }
    table = new JTable(data, columns);
    table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
    scrollPane.setViewportView(table);
}
catch(Exception ex)
{       
    System.out.println(ex);
}

I am using vector class to fetch the data from the table. How do we print the data shown in the displayed table to a paper?

回答1:

just use JTable.print() method. here is an article about sending JTable into printer and another one with more parameters

回答2:

You obviously didn't read the links provided in your previous question.

From the Printing section of How to use Tables

Printing

JTable provides a simple API for printing tables. The easiest way to print out a table is to invoke JTable.print with no arguments:

try {
     if (! table.print()) {
         System.err.println("User cancelled printing");
     } 
 } catch (java.awt.print.PrinterException e) {
     System.err.format("Cannot print %s%n", e.getMessage()); 
 }

Invoking print on a normal Swing application brings up a standard printing dialog box. (On a headless application, the table is simply printed.) The return value indicates whether the user went ahead with the print job or cancelled it. JTable.print can throw java.awt.print.PrinterException, which is a checked exception; that's why the above example uses a try ... catch.

JTable provides several overloads of print with various options. The following code from TablePrintDemo.java shows how to define a page header:

MessageFormat header = new MessageFormat("Page {0,number,integer}");

try {
    table.print(JTable.PrintMode.FIT_WIDTH, header, null); 
} catch (java.awt.print.PrinterException e) {
     System.err.format("Cannot print %s%n", e.getMessage()); 
}

For more sophisticated printing applications, use JTable.getPrintable to obtain a Printable object for the table. For more on Printable, refer to the Printing lesson in the 2D Graphics trail.

回答3:

i hope help you with this code try it its for How to print JTable in Java netbeans

    private void btn_printActionPerformed(java.awt.event.ActionEvent evt) {                                          
    // TODO add your handling code here:
         MessageFormat header = new MessageFormat("Print Report");
        MessageFormat footer = new MessageFormat("Page{0,number,integer}");
    try {
        table_employee.print(JTable.PrintMode.FIT_WIDTH, header, footer);
    } catch (java.awt.print.PrinterAbortException e) {
    } catch (PrinterException ex) {
        Logger.getLogger(employee_info.class.getName()).log(Level.SEVERE, null, ex);
    }
}

来源：https://stackoverflow.com/questions/14544013/how-to-print-a-jtable-object-in-the-java-application

标签

java

swing

printing

jtable

awt