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Mike Lee
How To Pass data from one GUI to another in java swing
1 Answer(s)      a year and 11 months ago
Posted in : Java Beginners


I'm new to java and part of our assignment is to build a GUI and display a result set from data input. I'm stuck at how to get the user's input from JTextFields and combobox selection and display those values to a table. My code is something like this. Thanks in advance.

import java.awt.FlowLayout;
import javax.swing.*;
import java.awt.GridLayout;

public class RetailCalculatorProject extends JFrame { //components JPanel panel1 = new JPanel(); JLabel iName = new JLabel ("Item Name");

JPanel panel2 = new JPanel(); JLabel iOrigPrice = new JLabel("Original Price $ "); JPanel panel3 = new JPanel(); JLabel percentD = new JLabel ("Percent Discount "); JPanel panel4 = new JPanel(); JLabel selectDepartmentLabel = new JLabel("Select Department"); JPanel panel5 = new JPanel(); String[] departments = {"Bath" , "Bedroom" , "Garden/Patio", "Kitchen", "Living Room"}; JComboBox option = new JComboBox(departments); JPanel buttonsPanel = new JPanel(); JButton calculateButton = new JButton("Calculate"); JButton exitButton = new JButton("Exit"); CalculateButton cb = new CalculateButton(); ExitButton eb = new ExitButton(); public RetailCalculatorProject() { super ("Retail Calculator"); setSize(550, 300); setLocationRelativeTo(null); GridLayout layout = new GridLayout(7, 1, 3, 3); setLayout(layout); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setVisible(true); setLookAndFeel(); } private void setLookAndFeel() { try { UIManager.setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel"); } catch(Exception exc) { //ignore error } } { FlowLayout row1 = new FlowLayout (FlowLayout.LEFT, 10, 10); setLayout(row1); panel1.add(iName); JTextField itemName = new JTextField(20); panel1.add(itemName); add(panel1); } { FlowLayout row2 = new FlowLayout(FlowLayout.LEFT, 10, 10); setLayout(row2); panel2.add(iOrigPrice); JTextField oP = new JTextField (4); panel2.add(oP); add(panel2); } { panel3.add(percentD); JTextField discount = new JTextField (3); panel3.add(discount); add(panel3); } { panel4.add(selectDepartmentLabel); add(panel4); } { panel5.add(option); add(panel5); } { buttonsPanel.add(calculateButton); calculateButton.addActionListener(cb); buttonsPanel.add(exitButton); exitButton.addActionListener(eb); add(buttonsPanel); } public static void main(String[] args) { //create an instance of the RetailCalculatorProject to apply members RetailCalculatorProject assignment = new RetailCalculatorProject(); } }

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September 17, 2012 at 5:54 PM


Here is a code that accepts the user input and save it to jtable.

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

public class RetailCalculatorProject extends JFrame
{
JLabel iName = new JLabel ("Item Name");
JLabel iOrigPrice = new JLabel("Original Price $ ");
JLabel percentD = new JLabel ("Percent Discount ");
JLabel selectDepartmentLabel = new JLabel("Select Department");
String[] departments = {"Bath" , "Bedroom" , "Garden/Patio", "Kitchen", "Living Room"};
JComboBox option = new JComboBox(departments);

JButton calculateButton = new JButton("Calculate");
JButton exitButton = new JButton("Exit");
JTextField itemName = new JTextField(20);
JTextField oP = new JTextField (4);
 JTextField discount = new JTextField (3);



public RetailCalculatorProject()
{
    super ("Retail Calculator");


    setLayout(new GridLayout(5,2,5,5));

    add(iName);
    add(itemName);
    add(iOrigPrice);
    add(oP);
    add(percentD);
    add(discount);
    add(selectDepartmentLabel);
    add(option);
    add(calculateButton);

    calculateButton.addActionListener(new ActionListener(){
        public void actionPerformed(ActionEvent e){
  String v1=itemName.getText();
  String v2=oP.getText();
  String v3=discount.getText();
  String v4=option.getSelectedItem().toString(); 


  JFrame f = new JFrame();
  String data[][] = {{}};
  String col[] = {"Item Name","Price","Discount(%)","Department"};
  DefaultTableModel model = new DefaultTableModel(data,col);
  JTable table = new JTable(model);
  model.insertRow(0,new Object[]{v1,v2,v3,v4});
  f.add(table);
  f.setSize(300,200);
  f.setVisible(true);
        }   
    });
    setSize(550, 300);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setVisible(true);

}


public static void main(String[] args) {
    RetailCalculatorProject assignment = new RetailCalculatorProject();

}
}


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