getConstructor in JAVA

try this:

public class GuestName extends JDialog {
    private Integer yourInt;
    private String[][] yourArray;

    public GuestName(Integer yourInt, String[][] yourArray, Frame owner, boolean modal) throws HeadlessException {
        super(owner, modal);
        this.yourInt = yourInt;
        this.yourArray = yourArray;
    }
}

Dear Valery,

Thanks for fast response.

I have two seperate JDialog
1> newGuest and 2> guestName

I want to call guestName from newGuest

guestName constructor is having 4 arguments
          public guestName(int gn,String guestName1[][], boolean modal, java.awt.Frame parent)

From newGest, I am calling guestName as below

String guestName2[][] = {{"A","0","B"},{"C","1","D"}}; //,{"E","2","F"},{"G","3","H"}};
int gc = Integer.parseInt(Guest_text.getText());
String retv = "guestName";
try {
Class cl = Class.forName(retv);
Constructor constructor =  cl.getConstructor(new Class[] {Integer.class, String.class, boolean.class, Frame.class});
Object invoker = constructor.newInstance(new Object[]{gc, guestName2, true, (new javax.swing.JFrame())});
}

I am getting error as
java.lang.NoSuchMethodException: guestName.<init>(java.lang.Integer, [[Ljava.lang.String;, boolean, java.awt.Frame)
      at java.lang.Class.getConstructor0(Class.java:2706)

Please give your inputs.
Regards

I have a JDialog and want to call the JDialog using getConstructor.

Why? Why are you using reflection?

Dear CEHJ,

Please suggest the alternate.

Regards

Dear CEHJ,
I want to instanciate the second JDialog after some inputs in first JDialog and values need to pass from one to other.

Regards

Please suggest the alternate.

I can't really, since you don't give your GOAL
Gernerally speaking, reflection should only be used for very specialized purposes

I want to instanciate the second JDialog after some inputs in first JDialog and values need to pass from one to other.

Then all you need to do is to provide a constructor in your JDialog subclass that accepts the required parameters.

Dear CEHJ,
I tried for the same but I am getting error.

java.lang.NoSuchMethodException: guestName.<init>(java.lang.Integer, [[Ljava.lang.String;, boolean, java.awt.Frame)
      at java.lang.Class.getConstructor0(Class.java:2706)

I have passed exectlty the same which is required in second JDialog.

Regards

Deear CHEJ,
I am suspecting error due to [[Ljava.lang.String

Regards

What you should be doing is something like this:

MySecondDialog d = new MySecondDialog(someStringArray, true, someFrame);

Select allOpen in new window

Ok CHEJ,

Let me try and will come back to you.

Regards

Issue closed and supported well.

Regards.

Hei Milind,
CEHJ is right, don't use reflection! Use the classes in this way (I created some for you)

import javax.swing.*;

public class JFrameTester {

      public static void main(String[] args) {
        JFrame f = new JFrame("your JFrame");
        f.setSize(400, 400);
        f.setLocation(300,200);
        f.setVisible(true);

        String guestName2[][] = {{"A","0","B"},{"C","1","D"}}; //,{"E","2","F"},{"G","3","H"}};

        NewGuest newGuest = new NewGuest(f, false, 5, guestName2);
        newGuest.setSize(250, 250);
        newGuest.setVisible(true);

        newGuest.showGuestNname();  

      }
}

=============================================================

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

public class NewGuest extends JDialog {
    private Integer yourInt;
    private String[][] guestName2;
    private Frame owner;

    public NewGuest(Frame owner, boolean modal, Integer yourInt, String[][] guestName2) throws HeadlessException {
        super(owner, modal);
        this.owner = owner;
        this.yourInt = yourInt;
        this.guestName2 = guestName2;
    }

    public void showGuestNname() {
        GuestName guestName = new GuestName(owner, false, 5, guestName2);
        guestName.setSize(150, 150);
        guestName.setVisible(true);
    }
}

=======================================================

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

public class GuestName extends JDialog {
    private Integer yourInt;
    private String[][] guestName2;

    public GuestName(Frame owner, boolean modal, Integer yourInt, String[][] guestName2) throws HeadlessException {
        super(owner, modal);
        this.yourInt = yourInt;
        this.guestName2 = guestName2;
    }
}

then start the first class! forget about reflection, it's for other purposes.

:)

CEHJ was faster than me ;-)