JTextField method numberic

[ŖàΫ ỏƒ Ңόρę]

Hi

In the following code, I have a problem with JTextField method.

The problem is how I can get the numbers that the user enters in the fields.

Actually, I have tried many times to fix the problem but I couldn't

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

public class Postage extends JApplet implements ActionListener{
	private JLabel lengthLabel;
	private JLabel widthLabel;
	private JLabel weightLabel;
	private JLabel stanLabel;
	private JLabel posAmountLabel;
	private JTextField lengthField;
	private JTextField widthField;
	private JTextField weightField;
	private JButton submitButton;
	
	public void init(){
		lengthLabel = new JLabel("Length (in cm):");
		widthLabel = new JLabel("Width (in cm) :");
		weightLabel = new JLabel("Weight (in g) :");
		stanLabel = new JLabel("Welcome to my postage calculator!");
		posAmountLabel = new JLabel("Enter the dimensions and weight above.");
		lengthField = new JTextField(5);
		widthField = new JTextField(5);
		weightField = new JTextField(5);
		submitButton = new JButton("Submit");
		
		submitButton.addActionListener(this);
		
		Container contentPane = getContentPane();
		contentPane.setLayout(new FlowLayout());
		contentPane.add(lengthLabel);
		contentPane.add(lengthField);
		contentPane.add(widthLabel);
		contentPane.add(widthField);
		contentPane.add(weightLabel);
		contentPane.add(weightField);
		contentPane.add(submitButton);
		contentPane.add(stanLabel);
		contentPane.add(posAmountLabel);
	}
	
	public void actionPerofrmed(ActionEvent e){
		[COLOR="Red"]double length = Integer.parseInt(lengthField.getText());
		double width = Integer.parseInt(widthField.getText());
		double weight = Integer.parseInt(weightField.getText());[/COLOR]
		
		String amount;
		if(weight<30){amount="0.54$";}
		else if(weight<51){amount="0.98$";}
		else if(weight<100){amount="1.18$";}
		else if(weight<201){amount="1.96$";}
		else {amount="2.75$";}
		
		if ((length>24.5)||(width>15.6)||(weight>50)){
			stanLabel.setText("This is non-standard lettermail.");
			posAmountLabel.setText("The postage amount will be: $"+amount);
		}else{
			stanLabel.setText("This is standard lettermail.");
			posAmountLabel.setText("The postage amount will be: $"+amount);
		}
		
	}	
}

[Fubarable]

Hi

In the following code, I have a problem with JTextField method.

The problem is how I can get the numbers that the user enters in the fields.

Actually, I have tried many times to fix the problem but I couldn't

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

public class Postage extends JApplet implements ActionListener{
	//....
	
	public void init(){
		//...
	}
	
	public void [color="red"]actionPerofrmed[/color](ActionEvent e){
		//....
	}	
}

Look at your program's code skeleton above. Check the spelling and I think your problem may be solved.

[ŖàΫ ỏƒ Ңόρę]

Thank u for reminding me with the spelling

I fixed it and still doesn't work

I think the problem with the three lines that I colored them with red

[Fubarable]

Thank u for reminding me with the spelling

You're quite welcome.

I fixed it and still doesn't work

Doesn't work as in shows an error message? As in doesn't run? As in it turns your computer into smoldering pile of ashes? Please help us out on the details here.

I think the problem with the three lines that I colored them with red

I've no idea. You've changed your code and so you'll need to post an update. Otherwise I'll be guessing about code I can't see.

[ŖàΫ ỏƒ Ңόρę]

I finally fixed it

This is the right code

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

public class Postage extends JApplet implements ActionListener{
	private JLabel lengthLabel;
	private JLabel widthLabel;
	private JLabel weightLabel;
	private JLabel stanLabel;
	private JLabel posAmountLabel;
	private JTextField lengthField;
	private JTextField widthField;
	private JTextField weightField;
	private JButton submitButton;
	
	public void init(){
		lengthLabel = new JLabel("Length (in cm):");
		widthLabel = new JLabel("Width (in cm) :");
		weightLabel = new JLabel("Weight (in g) :");
		stanLabel = new JLabel("Welcome to my postage calculator!");
		posAmountLabel = new JLabel("Enter the dimensions and weight above.");
		lengthField = new JTextField(5);
		widthField = new JTextField(5);
		weightField = new JTextField(5);
		submitButton = new JButton("Submit");
		
		submitButton.addActionListener(this);
		
		Container contentPane = getContentPane();
		contentPane.setLayout(new FlowLayout());
		contentPane.add(lengthLabel);
		contentPane.add(lengthField);
		contentPane.add(widthLabel);
		contentPane.add(widthField);
		contentPane.add(weightLabel);
		contentPane.add(weightField);
		contentPane.add(submitButton);
		contentPane.add(stanLabel);
		contentPane.add(posAmountLabel);
	}
	
	public void actionPerformed(ActionEvent e){
		[COLOR="Red"]double length = Double.parseDouble(lengthField.getText());
		double width = Double.parseDouble(widthField.getText());
		double weight = Double.parseDouble(weightField.getText());[/COLOR]
		
		String amount;
		if(weight<30){amount="0.54$";}
		else if(weight<51){amount="0.98$";}
		else if(weight<100){amount="1.18$";}
		else if(weight<201){amount="1.96$";}
		else {amount="2.75$";}
		
		if ((length>24.5)||(width>15.6)||(weight>50)){
			stanLabel.setText("This is non-standard lettermail.");
			posAmountLabel.setText("The postage amount will be: "+amount);
		}else{
			stanLabel.setText("This is standard lettermail.");
			posAmountLabel.setText("The postage amount will be: "+amount);
		}
		
	}	
}