adding textfields

[themanepalli]

Im a 15 year old noob to java. I am trying to make a basic program trader that asks for the stock price, the stock name, the stock market value and the type of order. Based on the type of order, i want a new textfield to appear. do i have to add the textfield in the init first or can i do it in the action performed. I googled someother ones but they are a little too complicated for me. heres my code.

import java.awt.*;
import java.applet.*;
// import an extra class for the ActionListener
import java.awt.event.*;


public class mathFair extends Applet implements ActionListener
{
	TextField stockPrice2;
	TextField stockName2;
	TextField orderType2;
	TextField marketValue2;
	TextField buyOrder2;
	TextField sellOrder2;
	TextField limitOrder2;
	TextField stopLossOrder2;
	Label stockPrice1;
	Label stockName1;
	Label orderType1;
	Label marketValue1;
	Label buyOrder1;
	Label sellOrder1;
	Label limitOrder1;
	Label stopLossOrder1;
	Button calculate;





public void init()
{

	      stockPrice1 = new Label ("Enter Stock Price:");

	      stockName1 = new Label ("Enter Name of Stock: ");

	      orderType1 = new Label ("Enter Type of Order: 1 for Buy, 2 for Sell, 3 for Stop Loss, 4 for Limit");

	      marketValue1= new Label("Enter The Current Price Of The Market");





	      stopLossOrder1 = new Label ("Enter The Lowest Price The Stock Can Go");

	      limitOrder1 = new Label ("Enter The Highest Price The Stock Can Go");

	      stockPrice2 = new TextField (35);

		  stockName2 = new TextField (35);

	      orderType2 = new TextField (35);

	      marketValue2= new TextField(35);

	      calculate= new Button("Start The Simulation");

	      add (stockPrice1);

	      add (stockPrice2);

	      add (stockName1);

	      add (stockName2);

	      add (marketValue1);
		  	      ;
	      add(marketValue2);

	      add (orderType1);

	      add (orderType2);

	      add(calculate);


		 ;



		  calculate.addActionListener(this);






 }






	         public void actionPerformed (ActionEvent e)
	         {

					String stock= stockPrice2.getText();
					int stockPrice= Integer.parseInt(stock);
	            	stockPrice2.setText(stockPrice +"");


	            	String marketV= marketValue2.getText();
					int marketValue= Integer.parseInt(marketV);
					marketValue2.setText(marketValue+"");




					String orderT= orderType2.getText();
					int orderType= Integer.parseInt(orderT);
					orderType2.setText(orderType+"");



					if((e.getSource()==calculate)&& (orderType==1))
					{
						buyOrder2= new TextField(35);
						buyOrder1 = new Label("Enter Price You Would Like To Buy At");
						add(buyOrder2);
						add(buyOrder1);
					}
					else
					if((e.getSource()==calculate)&& (orderType==2))
					{
						 sellOrder2= new TextField(35);
						 sellOrder1 = new Label("Enter Price You Would Like To Sell At");
						 add(sellOrder2);
		 				 add(sellOrder1);

					}
					else
					if((e.getSource()==calculate)&& (orderType==3))
					{

						stopLossOrder2= new TextField(35);
						stopLossOrder1=new Label("Enter The Lowest Price The Stock Can Go");
						add(stopLossOrder2);
						add(stopLossOrder1);


					}
					else
					if((e.getSource()==calculate)&& (orderType==4))
					{

						limitOrder2=new TextField(35);
						limitOrder1= new Label("Enter the Highest Price The Stock Can Go");
						add(limitOrder2);
						add(limitOrder1);;
					}


			}

}

[eRaaaa]

Try to invoke validate(); after you have added some new components e.g. after add(buyOrder1); in your actionPerformed