Can anyone write this or look at the code I wrote to tell me what I did wrong? I

Question

Can anyone write this or look at the code I wrote to tell me what I did wrong? I am will to pay for a running program.

Java Program

Design a GUI program to find the weighted average of four test scores. The four test scores and their respective weights are given in the following format:

testscore1 weight1
...

For example, the sample data is as follows:

75 0.20
95 0.35
85 0.15
65 0.30

The user is supposed to enter the data and press a Calculate button. The program must display the weighted average.

Remember to follow proper form and design in your response.

Explanation / Answer

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

class WeightedScores extends JFrame {

JTextField[] sc=new JTextField[4];

JTextField[] wt=new JTextField[4];

JLabel res;

JButton calc;

public WeightedScores() {

JPanel entry = new JPanel(new GridLayout(4,4));

calc = new JButton("Calculate");

for(int i=0;i<4;i++)

{

entry.add(new JLabel("Enter Test Score "+(i+1)+": "));

sc[i]=new JTextField(0);

entry.add(sc[i]);

entry.add(new JLabel("Enter Weight "+(i+1)+": "));

wt[i]=new JTextField(0);

entry.add(wt[i]);

}

calc.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent e){

double avg=0,s,w;

for(int i=0;i<4;i++)

{

s = Double.parseDouble(sc[i].getText());

w = Double.parseDouble(wt[i].getText());

avg=avg+ s*w;

}

res.setText("Weighted Average is: "+avg);

}

});

JPanel result=new JPanel();

res=new JLabel("Weighted Average is: ");

result.add(res);

add(entry, BorderLayout.NORTH );

add(calc, BorderLayout.CENTER );

add(result, BorderLayout.SOUTH );

pack();

}

public static void main(String[] args) {

WeightedScores frame = new WeightedScores();

frame.setTitle("Weighted Scores");

frame.setLocationRelativeTo(null );

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE );

frame.setVisible(true);

}

}

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