Thread: BorderLayout makes everything disappear

Hey, so when i attempt to use the BorderLayout, then run the program nothing is shown in the window, my slider/textboxes and labels are gone. Then when i revert back to using a FlowLayout, they come back.

package calculations;
 
import java.awt.*;
import javax.swing.*;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
 
public class MyControlPanel extends javax.swing.JPanel
{
    private MyShape theShape;//creating instance of MyShape
 
    static int min = 0;//minimum value for jSlider
    static int max = 100;//maximum value for jSlider
    static int initial = 0;//inital value for jSlider
 
    //creating components
    JSlider jSlider;
    JLabel jLabel1;
    JLabel jLabel2;
    JLabel jLabel3;
    JLabel jLabel4;
    JTextField jText1;
    JTextField jText2;
 
    private int shapeSize;//used to hold sliderValue  
 
    DrawShape drawShape = new DrawShape(20,20,shapeSize,theShape);
 
    public MyControlPanel() 
    {
        initComponents();
 
        //JSlider setup
        jSlider = new JSlider(JSlider.HORIZONTAL, min, max, initial);
        jSlider.setMajorTickSpacing(10);
        jSlider.setMinorTickSpacing(1);
        jSlider.setPaintLabels(true);
        jSlider.setPaintTicks(true);
        jSlider.setValue(50);
 
        jSlider.addChangeListener(new MyChangeAction());
 
        //create instance of jTexts          
        jText1 = new JTextField();
        jText2 = new JTextField();
 
        //setText for jTexts
        jText1.setText("          ");
        jText2.setText("          ");
 
        //create instance of labels
        jLabel1 = new JLabel();
        jLabel2 = new JLabel();
        jLabel3 = new JLabel();
        jLabel4 = new JLabel();
 
        //setText for jLabels
        jLabel1.setText("Shape Dimension = ");
        jLabel2.setText("     Boundary Length = ");
        jLabel3.setText("     Area = ");
        jLabel4.setText("");
 
        //adding components
        this.add(jSlider);
        this.add(jLabel1);
        this.add(jLabel4);
        this.add(jLabel2);
        this.add(jText1);
        this.add(jLabel3);
        this.add(jText2);
        //this.add(drawShape);
 
        setLayout(new FlowLayout());
        repaint();
    }
 
    public void setShape(MyShape suppliedShape)
    {       
        theShape = suppliedShape;
    }
    public MyShape getShape()
    {
        return theShape;
    }
 
        public class MyChangeAction implements ChangeListener
        {
            @Override
            public void stateChanged(ChangeEvent e) 
            {   
                DrawShape drawShape = new DrawShape(20,20,shapeSize,theShape);
                int sliderValue = jSlider.getValue();
                shapeSize = sliderValue;
                double area;
                double boundaryLength;
 
                String str = Double.toString(sliderValue);
                jLabel4.setText(str);
 
                area = theShape.getArea(sliderValue);
                boundaryLength = theShape.getBoundaryLength(sliderValue);
 
                jText1.setText(Double.toString(Math.round(boundaryLength)));
                jText2.setText(Double.toString(Math.round(area))); 
                add(drawShape);
            }            
        }
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {
 
        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 400, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 300, Short.MAX_VALUE)
        );
    }// </editor-fold>                        
    // Variables declaration - do not modify                     
    // End of variables declaration                   
}

this is my code with the FlowLayout, can someone tell me how i would implement the BorderLayout correctly, so that my program looks something like this:

Currently:


What i would like:


Slider/textboxes and labels at the bottom, but the paint panel at above it.

Thanks in advance! Any help would be great!