I have two classes in the same package, one called Calc, which is a simple calculator, whose code is below:
public Calc(){
super("Calculadora");
Container tela = getContentPane();
setLayout(null);
JLabel rotulo1 = new JLabel("1 numero: ");
JLabel rotulo2 = new JLabel("2 numero: ");
JLabel showup = new JLabel("");
JTextField texto1 = new JTextField(5);
JTextField texto2 = new JTextField(5);
JButton somar = new JButton ("+");
JButton subtrair = new JButton("-");
JButton dividir = new JButton("/");
JButton multiplicar = new JButton("x");
JButton exibir = new JButton("=");
rotulo1.setBounds(30,20,100,20); rotulo2.setBounds(30,60,100,20);
texto1.setBounds(100,20,200,20); texto2.setBounds(100,60,200,20);
showup.setBounds(125,100,200,20);
somar.setBounds(230,100,45,45);//coluna, linha, largura, comprimento
subtrair.setBounds(280,100,45,45);
dividir.setBounds(230,155,45,45);
multiplicar.setBounds(280,155,45,45);
exibir.setBounds(255,205,45,45);
setVisible(true);
setLocationRelativeTo(null);
tela.add(rotulo1); tela.add(rotulo2);
tela.add(texto1); tela.add(texto2); tela.add(showup);
tela.add(exibir); tela.add(somar); tela.add(subtrair); tela.add(dividir);tela.add(multiplicar);
setSize(350,300);
somar.addActionListener( new ActionListener(){
public void actionPerformed(ActionEvent e){
double numero1, numero2, soma;
soma=0;
numero1 = Double.parseDouble(texto1.getText());
numero2 = Double.parseDouble(texto2.getText());
soma = numero1+numero2;
showup.setVisible(true);
showup.setText(texto1.getText()+""+"+"+""+texto2.getText()+""+"="+soma);
texto1.setText(null); texto2.setText(null); texto1.requestFocus(); //funcao limpar e focar
}
}
);
subtrair.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
double numero1, numero2, subtrair;
subtrair=0;
numero1 = Double.parseDouble(texto1.getText());
numero2 = Double.parseDouble(texto2.getText());
subtrair = numero1 - numero2;
showup.setVisible(true);
showup.setText(texto1.getText()+""+"-"+""+texto2.getText()+""+"="+subtrair);
texto1.setText(null); texto2.setText(null); texto1.requestFocus();
}
});
multiplicar.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
double numero1, numero2, multiplicar;
multiplicar=0;
numero1 = Double.parseDouble(texto1.getText());
numero2 = Double.parseDouble(texto2.getText());
multiplicar = numero1*numero2;
showup.setVisible(true);
showup.setText(texto1.getText()+""+"x"+""+texto2.getText()+""+"="+multiplicar);
texto1.setText(null); texto2.setText(null); texto1.requestFocus();
}
});
dividir.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
double numero1, numero2, dividir;
dividir=0;
numero1 = Double.parseDouble(texto1.getText());
numero2 = Double.parseDouble(texto2.getText());
dividir=numero1/numero2;
showup.setVisible(true);
showup.setText(texto1.getText()+""+"/"+""+texto2.getText()+""+"="+dividir);
texto1.setText(null); texto2.setText(null); texto1.requestFocus();
}
});
}
public static void main (String [] args){
Calc app = new Calc();
app.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);}}
And I have another class called List, whose code is available below:
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.MenuEvent;
import javax.swing.event.MenuListener;
import javax.swing.*;
import java.awt.event.*;
public class Lista extends JFrame{
public Lista(){
super("Menu");
// Menu Bar
JMenuBar barra = new JMenuBar();
setJMenuBar(barra);
// Menu
JMenu opcoes = new JMenu("Options");
// Menu Item
JMenuItem item = new JMenuItem("Item 1");
// actionlistener
item.addActionListener(
new ActionListener(){
public void actionPerformed(ActionEvent e){
//I think that is in here where i must write the code
}
}
);
opcoes.add(item);
// Adds
barra.add(opcoes);
setSize(300, 150);
setVisible(true);
}
public static void main(String args[]){
Lista app = new Lista();}}
I want the JMenuItem
called item, when clicking it, open a new window with the contents of the Calc class, that is, I want to call the Calc class when interacting with JMenuItem
opening a new window with the calculator .