Seeking help with a code -GUI java, basics

import java.awt.*;

import java.awt.color.*;

import java.awt.Insets;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JLabel;

import javax.swing.JFrame;

import javax.swing.JOptionPane;

import javax.swing.JTextArea;

public class Proj1_Final_GUI_Infix extends JFrame implements ActionListener{

//private static Object frame;

private JButton evaluate;

private JLabel infixLabel = new JLabel("Enter Infix Expression");

private JLabel resultLabel = new JLabel("Result:");

private JTextArea inputArea ;

private JTextArea outputArea;

public Proj1_Final_GUI_Infix(){

inputArea = new JTextArea(1, 15);

inputArea.setMargin(new Insets(1,1,1,1));

inputArea.setEditable(true);

inputArea.setBackground(Color.BLUE);

inputArea.setEditable(true);

outputArea = new JTextArea(1 ,15);

outputArea.setMargin(new Insets(1,1,1,1));

outputArea.setEditable(false);

outputArea.setMargin(new Insets(1, 1, 1, 1));

outputArea.setEditable(false);

outputArea.setBackground(Color.BLUE);

//look for evaluation button

//this.infixLabel = new JLabel("Enter Infix expression");

}

@SuppressWarnings("PackageVisibleField")

Proj1_Final_GUI_Infix prob =new Proj1_Final_GUI_Infix() {

if(e.getSource== evaluate expression);

outputArea.setText("");

public void actionPerformed(ActionEvent e) {

String e= String inputArea.getText();

outputappend(probInfix(expression));

}else {

throw new UnsupportedOperationException("Not supported yet.");

//To change body of

//generated methods, choose Tools | Templates.

}

}

setEvaluate(new JButton("Evaluate"));

getEvaluate().addActionListener((ActionListener) this);

//input Area

Panel expression= new Panel();

expression.add(getInfixLabel());

expression.add(inputArea);

//results area

Panel resultsPanel = new Panel();

resultsPanel.add(resultLabel);

resultsPanel.add(outputArea);

}*/

}

public static void openGUI();

JFrame= new JFrame("Infix Expression Evaluator");

JFrame.setDefaultCloseOperation(EXIT_ON_CLOSE);

//JFrame.add(new proj1_Final_GUI());

JFrame.setLocationRelativeTo(null);

JFrame.pack();

//frame.setSize(200, 100);

JFrame.setVisible(true);

JFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

public static void main(String[] args) {

OpenGUI()

}End

@Override

public void actionPerformed(ActionEvent e) {

throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.

}

public class InfixProj1 {

@SuppressWarnings({"rawtypes", "unchecked"})

public String Infix(String express) {

StringTokenizer tokens = new StringTokenizer(express, operator, true);

while (tokens.hasMoreTokens()) {

String tkn = tokens.nextToken();

if (operator.IndexOf(tokens) < 0);

Stack valueStack;

valueStack.push(tokens);

}if (operator.push(tokens));

//Resolve Operations

//java.util.Stack valueStack;

}else{

resolve(valueStack,operator);

}final

}

private void push(StringTokenizer tokens) {

// TODO Auto-generated method stub

}

public int getPriority(String op){

if (op.equals("(")|| op.equals(")")) {

return 0;

} else if(op.equals("*")|| op.equals("/")) {

return 2;

} else if(op.equals("=")) {

return 3;

}

return Integer.MIN_VALUE;

}

@SuppressWarnings("unchecked")

public void resolve(Stack Values,Stack operators){

while(operators.size()>=2){

String first=(String)operators.pop();

String second=(String)operators.pop();

if(getPriority(first)

operators.push(second);

operators.push(first);

return;

}

else{

String firstValue=(String)Values.pop();

String secondValue=(String)Values.pop();

Values.push(getResults(secondValue,second,firstValue));

operators.push(first);

}

}

}