Valor no visor da calculadora
Gente tenho uma calculadora com 2 visores tipo a do windows e preciso que o visor de cima fique recebendo os dígitos,
mas por exemplo se eu faço 1+ 2 o visor nao recebe o 2
mas por exemplo se eu faço 1+ 2 o visor nao recebe o 2
private void numeroDigitado(String numero) {
jTextField1.setText("");
temp = jTextField1.getText();
// jTextField2.setText(numero);
temp = temp + numero;
jTextField2.setText(temp);
jTextField1.setText(temp);
// jTextField1.setText(temp);
}
private void escolheOperacao(char op) throws NumberFormatException {
operacao = op;
num1 = Double.parseDouble(jTextField1.getText());
jTextField1.setText("");
jTextField2.setText( temp + " " + " " + op + " ");
}
Leonardo Silva
Curtidas 0
Respostas
Ronaldo Lanhellas
09/04/2015
O código que você postou não diz muita coisa. Preciso ver o listener que faz a captura dos valores e dispara o cálculo.
GOSTEI 0
Leonardo Silva
09/04/2015
Aqui está o código completo...
package calculadora;
import javax.swing.JOptionPane;
/**
* *************LEONARDO CARVALHO SILVA***********
*/
public class JFrameCalculadora extends javax.swing.JFrame {
char operacao;
String temp, temp2;
double num1, num2, resultado;
private javax.swing.JButton botao0;
private javax.swing.JButton botao1;
private javax.swing.JButton botao2;
private javax.swing.JButton botao3;
private javax.swing.JButton botao4;
private javax.swing.JButton botao5;
private javax.swing.JButton botao6;
private javax.swing.JButton botao7;
private javax.swing.JButton botao8;
private javax.swing.JButton botao9;
private javax.swing.JButton botaoAdicao;
private javax.swing.JButton botaoDivisao;
private javax.swing.JButton botaoIgualdade;
private javax.swing.JButton botaoLimpar;
private javax.swing.JButton botaoMultiplicacao;
private javax.swing.JButton botaoSubtracao;
private javax.swing.JButton botaoVirgula;
private javax.swing.JPanel jPanel1;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
public JFrameCalculadora() {
initComponents();
}
/*INICIANDO OS COMPONENTES*/
@SuppressWarnings("unchecked")
private void initComponents() {
jPanel1 = new javax.swing.JPanel();
jTextField1 = new javax.swing.JTextField();
jTextField2 = new javax.swing.JTextField();
botao0 = new javax.swing.JButton();
botao1 = new javax.swing.JButton();
botao2 = new javax.swing.JButton();
botao3 = new javax.swing.JButton();
botao4 = new javax.swing.JButton();
botao5 = new javax.swing.JButton();
botao6 = new javax.swing.JButton();
botao7 = new javax.swing.JButton();
botao8 = new javax.swing.JButton();
botao9 = new javax.swing.JButton();
botaoVirgula = new javax.swing.JButton();
botaoAdicao = new javax.swing.JButton();
botaoSubtracao = new javax.swing.JButton();
botaoMultiplicacao = new javax.swing.JButton();
botaoDivisao = new javax.swing.JButton();
botaoLimpar = new javax.swing.JButton();
botaoIgualdade = new javax.swing.JButton();
/**
* **CONFIGURAÇÃO DO JFRAME****
*/
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Calculadora");
setBackground(new java.awt.Color(204, 204, 204));
setLocation(444, 333);
setResizable(false);
/*TEXTO DO VISORES SEMPRE A DIREITA*/
jTextField1.setHorizontalAlignment(jTextField1.RIGHT);
jTextField2.setHorizontalAlignment(jTextField2.RIGHT);
/*VISOR DE BAIXO INICIA COM O VALOR 0*/
jTextField1.setText("0");
/*USUÁRIO NÁO CONSEGUE EDITAR OS VISORES*/
jTextField1.setEditable(false);
jTextField2.setEditable(false);
/*COR DO PAINEL*/
jPanel1.setBackground(new java.awt.Color(204, 204, 204));
/*DEIXA OS 2 VISORES SEM BORDA*/
jTextField1.setBorder(null);
jTextField2.setBorder(null);
botao0.setText("0");
botao0.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
botao0ActionPerformed(evt);
}
});
botao1.setText("1");
botao1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
botao1ActionPerformed(evt);
}
});
botao2.setText("2");
botao2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
botao2ActionPerformed(evt);
}
});
botao3.setText("3");
botao3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
botao3ActionPerformed(evt);
}
});
botao4.setText("4");
botao4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
botao4ActionPerformed(evt);
}
});
botao5.setText("5");
botao5.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
botao5ActionPerformed(evt);
}
});
botao6.setText("6");
botao6.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
botao6ActionPerformed(evt);
}
});
botao7.setText("7");
botao7.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
botao7ActionPerformed(evt);
}
});
botao8.setText("8");
botao8.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
botao8ActionPerformed(evt);
}
});
botao9.setText("9");
botao9.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
botao9ActionPerformed(evt);
}
});
botaoVirgula.setText(",");
botaoVirgula.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
botaoVirgulaActionPerformed(evt);
}
});
botaoAdicao.setText("+");
botaoAdicao.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
botaoAdicaoActionPerformed(evt);
}
});
botaoSubtracao.setText("-");
botaoSubtracao.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
botaoSubtracaoActionPerformed(evt);
}
});
botaoMultiplicacao.setText("*");
botaoMultiplicacao.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
botaoMultiplicacaoActionPerformed(evt);
}
});
botaoDivisao.setText("/");
botaoDivisao.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
botaoDivisaoActionPerformed(evt);
}
});
botaoLimpar.setText("C");
botaoLimpar.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
botaoLimparActionPerformed(evt);
}
});
botaoIgualdade.setText("=");
botaoIgualdade.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
botaoIgualdadeActionPerformed(evt);
}
});
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addComponent(jTextField2)
.addComponent(jTextField1)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(botao7, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(botao8, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(botao9, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(botaoDivisao, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(botaoLimpar, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGap(0, 12, Short.MAX_VALUE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(botao0, javax.swing.GroupLayout.PREFERRED_SIZE, 86, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(botaoVirgula, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel1Layout.createSequentialGroup()
.addComponent(botao1, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(botao2, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel1Layout.createSequentialGroup()
.addComponent(botao4, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(botao5, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(botao6, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(botao3, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE))))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(botaoSubtracao, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(botaoMultiplicacao, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(botaoAdicao, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(botaoIgualdade, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(2, 2, 2))))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, 26, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 27, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(botao7, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(botao9, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(botaoDivisao, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(botaoLimpar, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(botao8, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(botao4, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(botao5, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(botao6, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(botaoMultiplicacao, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(botao1, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(botao2, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(botao3, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(botaoSubtracao, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(botao0, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(botaoVirgula, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(botaoAdicao, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addComponent(botaoIgualdade, javax.swing.GroupLayout.PREFERRED_SIZE, 118, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(53, Short.MAX_VALUE))
);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);
pack();
}
private void botao0ActionPerformed(java.awt.event.ActionEvent evt) {
numeroDigitado("0");
// jTextField2.setText("0" + temp);
}
private void botao1ActionPerformed(java.awt.event.ActionEvent evt) {
numeroDigitado("1");
}
private void botao2ActionPerformed(java.awt.event.ActionEvent evt) {
numeroDigitado("2");
}
private void botao3ActionPerformed(java.awt.event.ActionEvent evt) {
numeroDigitado("3");
}
private void botao4ActionPerformed(java.awt.event.ActionEvent evt) {
numeroDigitado("4");
}
private void botao5ActionPerformed(java.awt.event.ActionEvent evt) {
numeroDigitado("5");
}
private void botao6ActionPerformed(java.awt.event.ActionEvent evt) {
numeroDigitado("6");
}
private void botao7ActionPerformed(java.awt.event.ActionEvent evt) {
numeroDigitado("7");
}
private void botao8ActionPerformed(java.awt.event.ActionEvent evt) {
numeroDigitado("8");
}
private void botao9ActionPerformed(java.awt.event.ActionEvent evt) {
numeroDigitado("9");
}
private void botaoAdicaoActionPerformed(java.awt.event.ActionEvent evt) {
escolheOperacao('+');
}
private void botaoSubtracaoActionPerformed(java.awt.event.ActionEvent evt) {
escolheOperacao('-');
}
private void botaoMultiplicacaoActionPerformed(java.awt.event.ActionEvent evt) {
escolheOperacao('*');
}
private void botaoDivisaoActionPerformed(java.awt.event.ActionEvent evt) {
escolheOperacao('/');
}
private void botaoVirgulaActionPerformed(java.awt.event.ActionEvent evt) {
numeroDigitado(".");
}
private void botaoLimparActionPerformed(java.awt.event.ActionEvent evt) {
num1 = 0;
num2 = 0;
/**
* QUANDO ACIONAR O BOTÃO "C" O VISOR DE BAIXO INICIARÁ EM "0"*
*/
jTextField1.setText("0");
jTextField2.setText("");
}
private void botaoIgualdadeActionPerformed(java.awt.event.ActionEvent evt) {
num2 = Double.parseDouble(jTextField1.getText());
switch (operacao) {
case '+':
resultado = num1 + num2;
break;
case '-':
resultado = num1 - num2;
break;
case '*':
resultado = num1 * num2;
break;
case '/':
resultado = num1 / num2;
break;
}
jTextField1.setText(String.valueOf(resultado));
/**
* *SE A DIVISÃO FOR POR ZERO***
*/
if (jTextField1.getText().equals("Infinity")) {
jTextField1.setText("Impossível dividir por zero");
}
/**
* QUANDO ACIONAR O BOTÃO "=" O VISOR DE CIMA SERÁ LIMPADO*
*/
jTextField2.setText("");
}
private void numeroDigitado(String numero) {
jTextField1.setText("");
temp = jTextField1.getText();
jTextField2.setText(numero);
temp = temp + numero;
jTextField2.setText(temp);
jTextField1.setText(temp);
// jTextField1.setText(temp);
}
private void escolheOperacao(char op) throws NumberFormatException {
operacao = op;
num1 = Double.parseDouble(jTextField1.getText());
jTextField1.setText("");
jTextField2.setText(temp + " " + op + " ");
}
/**
* ************
* // Estados da calculadora
public enum estadosDaCalculadora {
INICIANDO,
PRIMEIRA_DIGITACAO,
EM_OPERACAO,
NOVA_DIGITACAO,
TOTALIZANDO
}
// Operações da calculadora
public enum operacoesCalculadora {
SOMA,
SUBTRAI,
MULTIPLICA,
DIVIDI
}
// Propriedades para controle interno
private estadosDaCalculadora estado = estadosDaCalculadora.INICIANDO;
private operacoesCalculadora operacaoCalculadora;
private double acumulador;
*********************
*/
}GOSTEI 0
Ronaldo Lanhellas
09/04/2015
O que acontece quando você clicar no botão "2" ? Pela lógica do método numeroDigitado() o temp sempre receberá o último valor digitado assim como o jTextField2, substituindo o já existente.
GOSTEI 0
Ronaldo Lanhellas
09/04/2015
O que acontece quando você clicar no botão "2" ? Pela lógica do método numeroDigitado() o temp sempre receberá o último valor digitado assim como o jTextField2, substituindo o já existente.
GOSTEI 0