asked on

Linking one form to another

I have set up a main screen, MainScreen1, and I want to call another screen StockEnq, when the Stock button is pressed. I would appreciate any help at all.
Here are the 2 screens:
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

public class MainScreen1 extends JFrame {

      JPanel row1 = new JPanel();
      JLabel abacus = new JLabel("ABACUS STOCK CONTROL", SwingConstants.CENTER );


      JPanel row2 = new JPanel();
      JButton stock = new JButton("STOCK");
      JButton suppliers = new JButton("SUPPLIERS");
      JButton orders = new JButton("ORDERS");
      JButton employees = new JButton("EMPLOYEES");
      JButton category = new JButton("CATEGORY");
      JButton prices = new JButton("PRICES");

public MainScreen1() {

      super("Abacus");
      setSize(400, 300);
      setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      GridLayout layout = new GridLayout(3,1);
      Container c = getContentPane();
      c.setLayout(layout);

      //Add listeners
      stock.addActionListener(

       new ActionListener() {


            public void actionPerformed(ActionEvent e) {

      StockEnq stock1 = new StockEnq();

      setVisible(true);
            }
      });

      FlowLayout layout1 = new FlowLayout(FlowLayout.CENTER, 10, 10 );
      row1.setLayout(layout1);
      row1.add(abacus);
      c.add(row1);

      GridLayout layout2 = new GridLayout(3,2,10, 10 );
      row2.setLayout(layout2);
      row2.add(stock);
      row2.add(suppliers);
      row2.add(orders);
      row2.add(employees);
      row2.add(category);
      row2.add(prices);
      c.add(row2);
      setVisible(true);

      }

      public Insets getInsets() {

            Insets i = new Insets(50,40,15,40);
            return i;
      }

public static void main (String args[]) {

      MainScreen1 frame = new MainScreen1();

      }
}

***************************************************
This is the screen i want to be called
***************************************************

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

class StockEnq extends JFrame{
      JLabel l1= new JLabel("Stock Query ");
      JLabel l2= new JLabel("Reports ");
      JLabel l3= new JLabel("General Query");

      JButton b1 = new JButton ("run");
      JButton b2 = new JButton ("run");
      JButton b3 = new JButton ("run");

      JTextField t1 = new JTextField(15);
      JTextField t2 = new JTextField(15);
      JTextField t3 = new JTextField(15);



      public StockEnq()      {

            Container c = getContentPane ();
            c.setLayout (new FlowLayout ());

//add text fields to frame

            c.add (l1);
            c.add (t1);
            c.add (b1);
            c.add (l2);
            c.add (t2);
            c.add (b2);
            c.add (l3);
            c.add (t3);
            c.add (b3);

//set focus to t1
            t1.requestFocus();
//add action listeners

            t1.addActionListener(new ActionListenerT1());
            t2.addActionListener(new ActionListenerT2());
            t3.addActionListener(new ActionListenerT3());


      addWindowListener (new WindowAdapter () {
      public void windowClosing (WindowEvent e )
      {dispose () ;}
      });

}

//ActionListener classes for textfields

      class ActionListenerT1 implements ActionListener
{
      public void actionPerformed(ActionEvent e)
      {

            t1.transferFocus();
      }
}

      class ActionListenerT2 implements ActionListener
{
      public void actionPerformed(ActionEvent e)

      {

            t2.transferFocus();

     }
}

class ActionListenerT3 implements ActionListener
{
      public void actionPerformed(ActionEvent e)
      {

            t3.transferFocus();
      }
}

public static void main (String args[])
{

      StockEnq mFrame = new StockEnq ();
      mFrame.setLocation(100,100);
      mFrame.setSize(450,200);
      mFrame.setTitle("STOCK ENQUIRIES");
      mFrame.setVisible(true);
}
}

ASKER CERTIFIED SOLUTION

Tommy Braas

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Tommy Braas

You might want to consider making all your forms subclasses of JPanel. You can add a JPanel to any other container, it is not that easy with a JFrame. Then you add the to a CardLayout:

CardLayout forms = new CardLayout();
forms.addLayoutComponent("form1", myFirstForm);
forms.addLayoutComponent("form2", mySecondForm);

Then to show a certain 'card', e.g. "form1":
forms.show(parentFrame, "form1");

RobCSP

I recommend 1 main Frame and the rest of components must be containers like JPanels, try with this code:

/******* the main frame ************/

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

public class MainScreen1 extends JFrame {

JPanel row1 = new JPanel();
JLabel abacus = new JLabel("ABACUS STOCK CONTROL", SwingConstants.CENTER );

JPanel row2 = new JPanel();
JButton stock = new JButton("STOCK");
JButton suppliers = new JButton("SUPPLIERS");
JButton orders = new JButton("ORDERS");
JButton employees = new JButton("EMPLOYEES");
JButton category = new JButton("CATEGORY");
JButton prices = new JButton("PRICES");

public MainScreen1() {

super("Abacus");
setSize(400, 300);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
GridLayout layout = new GridLayout(3,1);
Container c = getContentPane();
c.setLayout(layout);

stock.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
stockActionPerformed(evt);
}
});

FlowLayout layout1 = new FlowLayout(FlowLayout.CENTER, 10, 10 );
row1.setLayout(layout1);
row1.add(abacus);
c.add(row1);

GridLayout layout2 = new GridLayout(3,2,10, 10 );
row2.setLayout(layout2);
row2.add(stock);
row2.add(suppliers);
row2.add(orders);
row2.add(employees);
row2.add(category);
row2.add(prices);
c.add(row2);
setVisible(true);

}

public Insets getInsets() {

Insets i = new Insets(50,40,15,40);
return i;
}

private void stockActionPerformed(java.awt.event.ActionEvent evt) {
change_1();
}

public static void main (String args[]) {

MainScreen1 frame = new MainScreen1();

}

/** Carga un panel de la clase jP_Divisas.
*/
public void change_1() {
Stock am = new Stock();
this.getContentPane().removeAll();
this.getContentPane().add(am);
pack();
this.repaint();

}

}

/*************** one panel***************/

public class Stock extends javax.swing.JPanel {

/** Creates new form Stock */
public Stock() {
initComponents();
}

/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jButton1 = new javax.swing.JButton();
jLabel2 = new javax.swing.JLabel();
jTextField2 = new javax.swing.JTextField();
jButton2 = new javax.swing.JButton();
jLabel3 = new javax.swing.JLabel();
jTextField3 = new javax.swing.JTextField();
jButton3 = new javax.swing.JButton();

setLayout(new org.netbeans.lib.awtextra.AbsoluteLayout());

setMaximumSize(new java.awt.Dimension(400, 200));
setMinimumSize(new java.awt.Dimension(400, 200));
jLabel1.setText("Stock query");
add(jLabel1, new org.netbeans.lib.awtextra.AbsoluteConstraints(20, 40, 120, -1));

add(jTextField1, new org.netbeans.lib.awtextra.AbsoluteConstraints(110, 40, 120, -1));

jButton1.setText("run");
add(jButton1, new org.netbeans.lib.awtextra.AbsoluteConstraints(250, 40, 60, 20));

jLabel2.setText("Reports");
add(jLabel2, new org.netbeans.lib.awtextra.AbsoluteConstraints(330, 40, 50, -1));

add(jTextField2, new org.netbeans.lib.awtextra.AbsoluteConstraints(20, 90, 210, -1));

jButton2.setText("run");
add(jButton2, new org.netbeans.lib.awtextra.AbsoluteConstraints(250, 90, 60, 20));

jLabel3.setText("General Query");
add(jLabel3, new org.netbeans.lib.awtextra.AbsoluteConstraints(320, 90, 90, -1));

add(jTextField3, new org.netbeans.lib.awtextra.AbsoluteConstraints(20, 130, 210, -1));

jButton3.setText("run");
add(jButton3, new org.netbeans.lib.awtextra.AbsoluteConstraints(250, 130, 60, 20));

}

// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
private javax.swing.JTextField jTextField3;
// End of variables declaration

}

Tommy Braas

>> I recommend 1 main Frame and the rest of components must be containers like JPanels, try with this code:
That is different from my statement how?

bwhelanuk

ASKER

As much as I like the idea of a cardlayout, is there no easier way to display another form when pressing a button?

Tommy Braas

Sure, you can remove and add panels to a frame during runtime, the problem with that though is that the panel will be layed out again, which might or might not problem. Re-laying out panels, or any container for that matter, will make the components move about on the screen. I personally find that very unsightly.