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    <p>Please try to run this code now, tell me is this closer to what you wanted ? if so do let me know, so that I can delete my answer. Do watch the changes I had done : </p> <ul> <li>in your <code>PanelC</code> class, where instead of using <code>init()</code> method, I made the constructor.</li> <li>Inside your Graph class&lt; i had removed all <code>setPreferredSizes(...)</code> calls, and instead I had overridden <code>getPreferredSize()</code> for each Class extending <code>JPanel</code>. For this visit each Class Panel, PanelB and PanelC.</li> <li>Lastly I had changed the Dimension values supplied to the <code>JPanel</code>, which is to go to the <code>LEFT/LINE_START</code> side, to something that can be seen</li> <li>BEST CHANGE is the use of EDT - Event Dispatch Thread, seems like you really not aware of <a href="http://docs.oracle.com/javase/tutorial/uiswing/concurrency/" rel="nofollow noreferrer">Concurrency in Swing</a></li> </ul> <hr> <pre><code>import java.awt.*; import java.awt.geom.*; import javax.swing.*; public class Graph extends JApplet{ public void init(){ SwingUtilities.invokeLater(new Runnable() { public void run() { Container conn = getContentPane(); conn.setLayout(new BorderLayout()); Panel p = new Panel();//graph conn.add(p,BorderLayout.CENTER); Box box1 = new Box(BoxLayout.Y_AXIS); PanelB a = new PanelB(box1);//vertical conn.add(a,BorderLayout.LINE_START); Box box2 = new Box(BoxLayout.X_AXIS); PanelC b = new PanelC(box2);//horizontal conn.add(b,BorderLayout.PAGE_END); } }); } } class Panel extends JPanel { public Panel(){ this.setBackground(Color.yellow); } @Override public Dimension getPreferredSize() { return (new Dimension(460,560)); } public void paintComponent(Graphics p) { super.paintComponent(p); Graphics2D graph = (Graphics2D)p; Dimension appletSize = this.getSize(); int appletHeight = (int)(appletSize.height); int appletWidth = appletSize.width; this.setBackground(Color.yellow);//set background color. int x,y,y1,x1,a,b,p1x,p1y,p2x,p2y; //line co-ordinates //the numbers represent the number of boxes on the graph int xstart = 7; int ystart = 1; int xfinish = 3; int yfinish = 9; //other variables int i = 0; int i2 = 0; int m = 0; int n = 0; int m2 = 0; int n2 = 0; int f2 = 0; int g2 = 1; //ranges int f = 5; int g = -5; //change -ve num to +ve int g3 = Math.abs(g); int a1 = g3 + f; int b1 = a1; y1 = (appletHeight); x1 = (appletWidth); y = (appletHeight / 2); x = (appletWidth / 2); a = (appletWidth / a1); b = (appletHeight / b1); int d = (appletWidth / a1); int e = (appletHeight / b1); /** to determine the ammount of pixles there is in each box of the graph, both y-axis and x-axis */ int xbox = x1 / 10; int ybox = y1 / 10; //line variables //the xstart, ystart, etc represent the number of boxes //top point of the line on the graph p1x = xbox * xstart;//start x p1y = ybox * ystart;//start y //lowwer point of the line on the graph p2x = xbox * xfinish;//finish x p2y = ybox * yfinish;//finish y //draw y-axis numbers //(+ve) while(f != 0){ String s = String.valueOf(f); p.drawString(s,(x + 5),m + 13); m = m + b; f = f - 1; } //(-ve) m2 = y; while(f2 != g-1){ String u = String.valueOf(f2); p.drawString(u,(x + 5),m2 - 3); m2 = m2 + b; f2 = f2 - 1; } //draw x-axis numbers. //(-ve) while(g != 0){ String t = String.valueOf(g); p.drawString(t,n,y - 5); n = n + a; g = g + 1; } //(+ve) n2 = x + a; while(g2 != g3+1){ String vw = String.valueOf(g2); p.drawString(vw,n2 -10,y - 5); n2 = n2 + a; g2 = g2 + 1; } BasicStroke aLine2 = new BasicStroke(1.0F, BasicStroke.CAP_ROUND,BasicStroke.JOIN_ROUND); graph.setStroke(aLine2); //notch on numbers and grid lines //left to right, top to bottom notches int v2 = -5; int v5 = 0; while(i &lt;= a1-1){ p.setColor(Color.lightGray);//lightgray line p.drawLine(a,0,a,y1);//vertical lightgray p.drawLine(0,b,x1,b);//horizontal lightgray a = a + d; b = b + e; i = i + 1; } //notches while(i2 &lt;= a1){ p.setColor(Color.blue);//notch color p.drawString("x",v2+2,y+3);//xaxis p.drawString("x",x-4,v5+4);//yaxis v5 = v5 + e; v2 = v2 + d; i2 = i2 + 1; } //draws the border of the graph p.setColor(Color.black); Rectangle2D.Float rect = new Rectangle2D.Float(0,0,x1,y1); BasicStroke aLine = new BasicStroke(2.5F, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND); graph.setStroke(aLine); graph.draw(rect); //draw cross BasicStroke aLine3 = new BasicStroke(2.5F, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND); graph.setStroke(aLine3); p.drawLine(x,0,x,y1); //vertical line p.drawLine(0,y,x1,y); //horizontal line //display the value of graph width and graph height String aw = String.valueOf(x1); p.drawString("Graph Width = ", 50,90); p.drawString(aw,150,90); p.drawString("Graph Height = ", 50,110); String ah = String.valueOf(y1); p.drawString(ah,156,110); //draw line on graph BasicStroke aLine4 = new BasicStroke(1.5F, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND); graph.setStroke(aLine4); p.setColor(Color.red); if(p1x &lt;= x1 &amp;&amp; p2x &lt;= x1 &amp;&amp; p1y &lt;= y1 &amp;&amp; p2y &lt;= y1){ p.drawLine(p1x,p1y,p2x,p2y); Color c = new Color(0,0,0); p.setColor(c); p.drawString("X", p1x-4,p1y+4); p.drawString("X", p2x-4,p2y+4); } else{ p.setColor(Color.black); p.drawRect(48,34,223,35); p.setColor(Color.white); p.fillRect(49,35,222,34); p.setColor(Color.red); p.drawString("Wrong co-ordinates!!!", 50,50); p.drawString("Values exceede applet dimensions.", 50,65); } } } class PanelB extends JPanel{ public PanelB (Box a) { a = Box.createVerticalBox(); a.add(new JLabel("Please enter the values below:")); a.add(new JLabel("a")); JTextField g1 = new JTextField("0.0"); g1.setMaximumSize(new Dimension(100,30)); a.add(g1); a.add(new JLabel("b")); JTextField g2 = new JTextField("0.0"); g2.setMaximumSize(new Dimension(100,30)); a.add(g2); a.add(new JLabel("c")); JTextField g3 = new JTextField("0.0"); g3.setMaximumSize(new Dimension(100,30)); a.add(g3); a.add(new JLabel("d")); JTextField g4 = new JTextField("0.0"); g4.setMaximumSize(new Dimension(100,30)); a.add(g4); a.add(new JButton("Plot")); a.add(new JButton("Refine")); add(a); } @Override public Dimension getPreferredSize() { return (new Dimension(200,100)); } } class PanelC extends JPanel{ public PanelC (Box b) { b = Box.createHorizontalBox(); b.add(new JLabel("a")); JTextField f1 = new JTextField("0.0"); f1.setMaximumSize(new Dimension(100,30)); b.add(f1); b.add(new JLabel("b")); JTextField f2 = new JTextField("0.0"); f2.setMaximumSize(new Dimension(100,30)); b.add(f2); b.add(new JLabel("c")); JTextField f3 = new JTextField("0.0"); f3.setMaximumSize(new Dimension(100,30)); b.add(f3); b.add(new JLabel("d")); JTextField f4 = new JTextField("0.0"); f4.setMaximumSize(new Dimension(100,30)); b.add(f4); b.add(new JButton("Plot")); b.add(new JButton("Refine")); add(b); } @Override public Dimension getPreferredSize() { return (new Dimension(201,50)); } } </code></pre> <p>Here is the HTML file I used : </p> <pre><code>&lt;html&gt; &lt;p&gt; This file launches the 'Graph' applet: Graph.class! &lt;/p&gt; &lt;applet code= "Graph.class" height = 550 width = 1000&gt; No Java?! &lt;/applet&gt; &lt;/html&gt; </code></pre> <p>Here is the output I am getting : </p> <p><img src="https://i.stack.imgur.com/6TSaM.jpg" alt="GRAPH"></p>
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    1. POI have a JApplet which has to display 3 Components. (2 JPanels and 1 Paint Method)
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    1. CO*"In your `PanelC` class, where instead of using `init()` method.."* Oh yeah, forgot that. It seemed very odd when `PanelB` used a constructor.
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      1. USAndrew Thompson
    2. COExactly, though I am really not in favour of using constructors, when extending something, but just to make life easy I did this, rest your answer is always there to do that trick of explaining things in detail :-) And Moreover, in OP's code he/she never even called `init()` method, that's what prompted me to do this change :-) And this time OP failed to call `PanelB and PanelC` anywhere in the code :(
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    3. COHello and thanks for your reply, I made the changes in accordance to your answer and I got a similar thing to my last update in the question but the graph moved to the right hand side of the applet. please see my question again in a couple of minutes since I am going to updated it again.
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      1. USMatthew
 

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