calling a public void method from a class button

[supa_kali_frajilistik]

hi guys i am working on swing classes, and what i am trying to do is call the printData() class and its method printStuff() from a touch of a button but when i excute it i get an error...can any body help me out or give me some advice....i will appreciate any help given ....tc

Code:

class Printdata2{
    public Printdata2()
    {
        try
        {
            //  Connect to the Database     

        //connection object created using DriverManager class
        //carpark is the name of the database
     
           Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
              Connection connect =DriverManager.getConnection("jdbc:odbc:carpark");
 
	//  Read data from a table
 
            String sql = "SELECT * FROM Ticket";
            Statement stmt = connect.createStatement();
 	    String linebreak = System.getProperty("line.separator");


            ResultSet rset = stmt.executeQuery("SELECT tnum, timein, timeout FROM Ticket");
            String str = "";
            while (rset.next()) {
str += linebreak + "Ticket Number: "+ rset.getObject(1)+ linebreak +"Customer Time In: "+ rset.getObject(2)+ linebreak +"Customer Time Out: "+ rset.getObject(3)+ linebreak+ linebreak;
          

}
            byte buf[] = str.getBytes();
            OutputStream fp = new FileOutputStream("tickets.txt");

 	    fp.write(buf);
            fp.close();
            rset.close();
            stmt.close();
            connect.close();
           
        }
        catch(Exception e) {
            
            e.printStackTrace();
        }


}
public static void main(String args[]) throws Exception {

Printdata2 fr = new Printdata2();



}



public void printStuff(String args[]) throws Exception{

 String filename = ("tickets.txt");  //  THIS IS THE FILE I WANT TO PRINT
    PrintRequestAttributeSet pras = new HashPrintRequestAttributeSet();
    DocFlavor flavor = DocFlavor.INPUT_STREAM.AUTOSENSE;     //  MY FILE IS  .txt TYPE
    PrintService printService[] = 
      PrintServiceLookup.lookupPrintServices(flavor, pras);
    PrintService defaultService = PrintServiceLookup.lookupDefaultPrintService();
    PrintService service = ServiceUI.printDialog(null, 200, 200,
      printService, defaultService, flavor, pras);
    if (service != null) {
      DocPrintJob job = service.createPrintJob();
      FileInputStream fis = new FileInputStream(filename);
      DocAttributeSet das = new HashDocAttributeSet();
      Doc doc = new SimpleDoc(fis, flavor, das);
      job.print(doc, pras);
      Thread.sleep(10000);
    }
 }



}

this class or button that i want to call class Printdata() and its method printStuff()..

Code:

class B8 implements ActionListener {
		public void actionPerformed(ActionEvent e) {	
			Printdata2 frame = new Printdata2();
				Printdata2.printStuff();
		}

the errors i get are below:::::

Code:

C:\Users\omar\Desktop>javac JFrameApplication.java
JFrameApplication.java:130: printStuff(java.lang.String[]) in Printdata2 cannot
be applied to ()
                                Printdata2.printStuff();
                                          ^
Note: JFrameApplication.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: JFrameApplication.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
1 error

C:\Users\omar\Desktop>

[sukatoa]

It says that you have to pass an array of Strings in printStuff() method when invoking on it....

try to compile those java files with -Xlint,
a detailed info should be there and guide you where are those warnings came from....

[supa_kali_frajilistik]

heres the error i get ....

Code:

C:\Documents and Settings\10294455\Desktop>javac JFrameApplication.java -Xlint
                                frame.printStuff();
                                     ^
1 error


C:\Documents and Settings\10294455\Desktop>

[supa_kali_frajilistik]

i got it working !!!! theres only one problem see below.....

Code:

class B8 implements ActionListener {
		public void actionPerformed(ActionEvent e) {	
			Printdata2 frame = new Printdata2();		
		}

Code:

class Printdata2{
    public Printdata2()
    {
        try
        {
            //  Connect to the Database     

        //connection object created using DriverManager class
        //carpark is the name of the database
     
           Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
              Connection connect =DriverManager.getConnection("jdbc:odbc:carpark");
 
	//  Read data from a table
 
            String sql = "SELECT * FROM Ticket";
            Statement stmt = connect.createStatement();
 	    String linebreak = System.getProperty("line.separator");


            ResultSet rset = stmt.executeQuery("SELECT tnum, timein, timeout FROM Ticket");
            String str = "";
            while (rset.next()) {
str += linebreak + "Ticket Number: "+ rset.getObject(1)+ linebreak +"Customer Time In: "+ rset.getObject(2)+ linebreak +"Customer Time Out: "+ rset.getObject(3)+ linebreak+ linebreak;
          
String filename = ("tickets.txt");  //  THIS IS THE FILE I WANT TO PRINT
    PrintRequestAttributeSet pras = new HashPrintRequestAttributeSet();
    DocFlavor flavor = DocFlavor.INPUT_STREAM.AUTOSENSE;     //  MY FILE IS  .txt TYPE
    PrintService printService[] = 
      PrintServiceLookup.lookupPrintServices(flavor, pras);
    PrintService defaultService = PrintServiceLookup.lookupDefaultPrintService();
    PrintService service = ServiceUI.printDialog(null, 200, 200,
      printService, defaultService, flavor, pras);
    if (service != null) {
      DocPrintJob job = service.createPrintJob();
      FileInputStream fis = new FileInputStream(filename);
      DocAttributeSet das = new HashDocAttributeSet();
      Doc doc = new SimpleDoc(fis, flavor, das);
      job.print(doc, pras);
      Thread.sleep(10000);
    }

 
}

}
            byte buf[] = str.getBytes();
            OutputStream fp = new FileOutputStream("tickets.txt");

 	    fp.write(buf);
            fp.close();
            rset.close();
            stmt.close();
            connect.close();
           
        }
        catch(Exception e) {
            
            e.printStackTrace();
        }


}
public static void main(String args[]) throws Exception {

Printdata2 fr = new Printdata2();

}

i wrote this bit of code in constructer bit and deleted printStuff().. but when the code reaches this bit of code it executes, and does'nt stop excuting it...

Code:

 String filename = ("tickets.txt");  //  THIS IS THE FILE I WANT TO PRINT
    PrintRequestAttributeSet pras = new HashPrintRequestAttributeSet();
    DocFlavor flavor = DocFlavor.INPUT_STREAM.AUTOSENSE;     //  MY FILE IS  .txt TYPE
    PrintService printService[] = 
      PrintServiceLookup.lookupPrintServices(flavor, pras);
    PrintService defaultService = PrintServiceLookup.lookupDefaultPrintService();
    PrintService service = ServiceUI.printDialog(null, 200, 200,
      printService, defaultService, flavor, pras);
    if (service != null) {
      DocPrintJob job = service.createPrintJob();
      FileInputStream fis = new FileInputStream(filename);
      DocAttributeSet das = new HashDocAttributeSet();
      Doc doc = new SimpleDoc(fis, flavor, das);
      job.print(doc, pras);
      Thread.sleep(10000);
    }

[supa_kali_frajilistik]

i solved it thax ...aniwais