private float proc(int a, int b, boolean state){
if(state == true){
             //do processing here
             static int complete = 1;
             return result;
}else{
if(complete != 1){
             //do same processing here
}
// more processing
return result;
}

private float proc(int a, int b, boolean state){
Integer completed;
if(state == true){
             //do processing here
             completed = 1;
             return result;
}else{
if(completed != 1){
             //do same processing here
}
// more processing
return result;
}

private int complete;
...
private float proc(int a, int b, boolean state) { ... }

private float proc(int a, int b, boolean state) {
    int completed = 0;
    if(state) {
        //do processing here
        completed = 1;
        return result; //not defined???
    }
    //no need for the else block or completed value check, if it was state it would have returned, if it was not it would have gone here.
    //do same processing
    //more processing
    return result; //not defined???
}

private static int complete;

public class PointOfSale extends JFrame implements ActionListener, ItemListener{

	//class variables
	JTextArea viewport1 = new JTextArea(3,20);
    JTextPane viewport2 = new JTextPane();

	int quant;
	float price;
	String item;
   
    //static vars for ctrl break and accumulated total
	static String nameHolder = "";
	static float total;
	



public void actionPerformed(ActionEvent e){
		try{
			int index;
			int id;
			int quant;
			String arg = e.getActionCommand();
			String name = txtLname.getText();

			quant = comboQty.getSelectedIndex() + 1;
			id = Integer.parseInt(txtID.getText());
			index = furnCombo.getSelectedIndex();
			item = catalog[index];
			price = Float.valueOf(txtPrice.getText());

			if(e.getSource() == btnPCheck || arg == "Price Check"){
				price = proc(quant, index, false);
			}
			if(e.getSource() == btnProc || arg == "Process"){
				if(name.compareTo("") == 0 || price < 1) throw new NumberFormatException();
				
				viewport1.setText("");
				if(name.compareTo(nameHolder) != 0){
					total = 0;
				}
				price = proc(quant, index, true);
				nameHolder = name;
				total += price;
				clear();
			}

			if(e.getSource() == btnFinal){
				viewport1.setText("");
				viewport2.setText("");
				JOptionPane.showMessageDialog(null, "Confirm total: " + total, "Confirm", JOptionPane.INFORMATION_MESSAGE);


				}
			if(e.getSource() == btnClear || arg == "Clear"){
				clear();
			}
			if(e.getSource() == btnSysClear || arg == "SysClear"){
				clear();
			}

			if(e.getSource() == btnExit || arg == "Exit")
				System.exit(0);

		}
		catch(NumberFormatException nFx){
			JOptionPane.showMessageDialog(null, "You have entered an incorrect value.", "Format Error", JOptionPane.ERROR_MESSAGE);
		}
		catch(Exception x){
			JOptionPane.showMessageDialog(null, "An Error has occured.");
		}
		finally{
		System.out.println("exception cleanup");
		}

	}//end actionPerformed


        private float carryCharge;
	private int pCheckFlag;
	private float proc(int quant, int itemKey, boolean taxInc){
			float tax;

			if(taxInc == false){
				float discount = 100 * (discountKey[itemKey]);
				float discountAmt = (float) price * (discountKey[itemKey]);
				price = (price * quant) - discountAmt;
				print2viewport1(discount, discountAmt, price);
				carryCharge = price;
				pCheckFlag = 1;
				return price;
			}else{
				if(pCheckFlag != 1){
				price = proc(quant, itemKey, false);
				viewport1.setText("");
				}
				tax = getTax();
				price = carryCharge + (carryCharge * tax);
				viewport2 = print2viewport2();
				pCheckFlag = 0;
				return carryCharge;
				}
		}//end proc

private void clear(){
			//txtfields throwing errors
			txtID.setText("");
			txtPrice.setText("");
			//txtLname.setText("");
			furnCombo.setSelectedIndex(0);
			comboQty.setSelectedIndex(0);
		        rbTax[5].setSelected(true);
		       viewport1.setText("");
     }//end clear

public void actionPerformed(ActionEvent e){

		try{
			String arg = e.getActionCommand();
			if(e.getSource() == btnClear || arg == "Clear"){
				clear();
				return;
			}
			if(e.getSource() == btnSysClear || arg == "SysClear"){
				sysClear();
				return;
			}
			if(e.getSource() == btnExit || arg == "Exit")
				System.exit(0);
                        int index;
			int id;
			int quant;
			String name = txtLname.getText();

			quant = comboQty.getSelectedIndex() + 1;
			id = Integer.parseInt(txtID.getText());

			index = furnCombo.getSelectedIndex();
			item = catalog[index];
			price = Float.parseFloat(txtPrice.getText());

			//*****  price chek  ******
			if(e.getSource() == btnPCheck || arg == "Price Check"){
				price = proc(quant, index, false);
			}

			//***** process  **********
			if(e.getSource() == btnProc || arg == "Process"){
				if(name.compareTo("") == 0 || price < 1) throw new            NumberFormatException();
				viewport1.setText("");
				if(name.compareTo(nameHolder) != 0)
					total = 0;
				price = proc(quant, index, true);
				nameHolder = name;
				total += price;
				clear();
			}

			
		}
		catch(NumberFormatException nFx){
			JOptionPane.showMessageDialog(null, "You have entered an incorrect value.", "Format Error", JOptionPane.ERROR_MESSAGE);
		}
		catch(Exception x){
			JOptionPane.showMessageDialog(null, "An Error has occured.");
		}
		finally{
		System.out.println("exception cleanup");
		}

	}//end actionPerformed