Thread: My GUI is EWWIE please help!

Im taking Java at my local CC and so far i am so lost. My teacher knows what she is doing as far as programming but she is a horrible teacher, no one in the class understands the material and she will not explain herself or try to teach another way. With that said i have a program i would like help with or corrected if someone wouldn't mind. My code below i cant get to run and also i would like my program to be more organized with the buttons in a certain order and size. Thanks for your time

import java.text.DecimalFormat;
import java.awt.event.*;
import java.awt.*;
import javax.swing.*;

public class Robert_Bachman_JFrame extends JFrame
{
private static final int WIDTH = 550; private static final int HEIGHT = 430;
private ExitButtonHandler ebHandler; private ClearButtonHandler cbHandler;
private JLabel testL, numOfGradeL, averageL, TopGradeL;
private JButton enterGradeB, clearB, exitB;
private JTextField testTF, numOfGradeTF, averageTF, TopGradeTF;
private EnterGradeButtonHandler esbHandler;

double totalGrade; int topGrade; int numOfGrade;


public Robert_Bachman_JFrame()
{
//Title
setTitle("Test Scores");

// Text fields
averageTF = new JTextField(10);
testTF = new JTextField(10);
TopGradeTF = new JTextField(10);
numOfGradeTF = new JTextField(10);


// labels
TopGradeL = new JLabel("Top score: ", SwingConstants.RIGHT);
numOfGradeL = new JLabel("Number of scores: ", SwingConstants.RIGHT);
averageL = new JLabel("Average score: ", SwingConstants.RIGHT);

testL = new JLabel("Test score: ", SwingConstants.RIGHT);

// Clear button
cbHandler = new ClearButtonHandler();
clearB = new JButton("Clear");
clearB.addActionListener(cbHandler);

//Enter score button
enterGradeB = new JButton("Enter score");
enterGradeB.addActionListener(esbHandler);
esbHandler = new EnterGradeButtonHandler();

//Get container
Container pane = getContentPane();

//Exit button
exitB = new JButton("Exit");
ebHandler = new ExitButtonHandler();
exitB.addActionListener(ebHandler);

//layout
pane.setLayout(new GridLayout(6, 3));

//Set size
setSize(WIDTH, HEIGHT);
setVisible(true);
setDefaultCloseOperation(EXIT_ON_CLOSE);

//Place components
pane.add(testL); pane.add(testTF);
pane.add(numOfGradeL); pane.add(numOfGradeTF);
pane.add(averageL); pane.add(averageTF);
pane.add(TopGradeL); pane.add(TopGradeTF);
pane.add(enterGradeB); pane.add(clearB);
pane.add(exitB);

//Disable text
numOfGradeTF.setEditable(false);
averageTF.setEditable(false);
TopGradeTF.setEditable(false);
}


private class ClearButtonHandler implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
testTF.setText("");
topGrade = 0;
averageTF.setText("");
numOfGradeTF.setText("");
numOfGrade = 0;
TopGradeTF.setText("");
testTF.requestFocusInWindow();

}
}
private class EnterGradeButtonHandler implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
double test, average;
DecimalFormat oneDecimal = new DecimalFormat("0.0");

test = Double.parseDouble(testTF.getText());
totalGrade += test;
numOfGrade++;
average = (totalGrade / numOfGrade);
topGrade = (int) larger(topGrade, test);

numOfGradeTF.setText("" + numOfGrade);
averageTF.setText("" + oneDecimal.format(average));
TopGradeTF.setText("" + topGrade);

testTF.requestFocusInWindow();
testTF.selectAll();
}
public double larger(double topGrade, double grade)
{
if (topGrade >= grade)
return topGrade;
else
return grade;
}

}

private class ExitButtonHandler implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
System.exit(0);
}
}

public class New_Class
{

public void main(String[] args)
{
New_Class A5Object = new New_Class();
}
}

}

your main method shouldn`t in your Internal class
and you should new Robert_Bachman_JFrame in your main method

Originally Posted by jcloud

your main method shouldn`t in your Internal class
and you should new Robert_Bachman_JFrame in your main method

Just give him a hint.

@castiel: Yes your program will hopefully compile but it will never show what you want. Reason is simple, you are not trying to call the drawing components anywhere in your whole program. As stated by jCloud, you are simply instantiating the object of the class which can't do anything except helping you to run main(), (specifically the code).

New_Class A5Object = new New_Class();

What do you think, this line will do?

@Mr.777 I want to give him a hit , but I don`t know how to say .
by the way,My English is very poor