Calculadora científica preciso de bastante ajuda

Programação Java
#1

olá pessoal, fiz um projeto de uma calculadora cientifica, está quase completa (mas ela roda para quem quiser ver o que foi feito até agora), o meu problema é colocar nesta calculadora as expressões lógicas not or , etc, e colocar cálculos de binário, hexadecimal, etc. como a calculadora do windows por exemplo.

alguém poderia continuar a calculadora para mim

só explicando

a primeira classe é o painel com os botões, o frame de telinha etc, e a classe principal

/**
*
*/

/**

  • @author aluysio/erick

*/

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

class CalculatorPanel extends JPanel implements ActionListener
{
public CalculatorPanel()
{
setLayout(null);
setBackground(Color.gray);

//------------ Display -----------------------
display = new JTextField(“0”);
display.setEditable(false);
add(display);
display.setBounds(10,15,300,25);

//------------ Botões ------------------------
b1 = new Button(“0”);
b1.setBackground(Color.white);
b1.setForeground(Color.blue);
add(b1);
b1.setBounds(10,155,30,30);
b1.addActionListener(this);

b2 = new Button(“1”);
b2.setBackground(Color.white);
b2.setForeground(Color.blue);
add(b2);
b2.addActionListener(this);
b2.setBounds(10,120,30,30);

b3 = new Button(“4”);
b3.setBackground(Color.white);
b3.setForeground(Color.blue);
add(b3);
b3.addActionListener(this);
b3.setBounds(10,85,30,30);

b4 = new Button(“7”);
b4.setBackground(Color.white);
b4.setForeground(Color.blue);
add(b4);
b4.addActionListener(this);
b4.setBounds(10,50,30,30);

b5 = new Button("+/-");
b5.setBackground(Color.white);
b5.setForeground(Color.blue);
add(b5);
b5.addActionListener(this);
b5.setBounds(45,155,30,30);

b6 = new Button(“2”);
b6.setBackground(Color.white);
b6.setForeground(Color.blue);
add(b6);
b6.addActionListener(this);
b6.setBounds(45,120,30,30);

b7 = new Button(“5”);
b7.setBackground(Color.white);
b7.setForeground(Color.blue);
add(b7);
b7.addActionListener(this);
b7.setBounds(45,85,30,30);

b8 = new Button(“8”);
b8.setBackground(Color.white);
b8.setForeground(Color.blue);
add(b8);
b8.addActionListener(this);
b8.setBounds(45,50,30,30);

b9 = new Button(".");
b9.setBackground(Color.white);
b9.setForeground(Color.blue);
add(b9);
b9.addActionListener(this);
b9.setBounds(80,155,30,30);

b10 = new Button(“3”);
b10.setBackground(Color.white);
b10.setForeground(Color.blue);
add(b10);
b10.addActionListener(this);
b10.setBounds(80,120,30,30);

b11 = new Button(“6”);
b11.setBackground(Color.white);
b11.setForeground(Color.blue);
add(b11);
b11.addActionListener(this);
b11.setBounds(80,85,30,30);

b12 = new Button(“9”);
b12.setBackground(Color.white);
b12.setForeground(Color.blue);
add(b12);
b12.addActionListener(this);
b12.setBounds(80,50,30,30);
b13= new Button("+");
b13.setBackground(Color.white);
b13.setForeground(Color.gray);
add(b13);
b13.addActionListener(this);
b13.setBounds(115,155,30,30);

b14 = new Button("-");
b14.setBackground(Color.white);
b14.setForeground(Color.gray);
add(b14);
b14.addActionListener(this);
b14.setBounds(115,120,30,30);

b15 = new Button("\u00d7");
b15.setBackground(Color.white);
b15.setForeground(Color.gray);
add(b15);
b15.addActionListener(this);
b15.setBounds(115,85,30,30);

b16 = new Button("\u00f7");
b16.setBackground(Color.white);
b16.setForeground(Color.gray);
add(b16);
b16.addActionListener(this);
b16.setBounds(115,50,30,30);

b17= new Button("=");
b17.setBackground(Color.green);
b17.setForeground(Color.black);
add(b17);
b17.addActionListener(this);
b17.setBounds(150,120,30,65);

b18 = new Button("%");
b18.setBackground(Color.white);
b18.setForeground(Color.red);
add(b18);
b18.addActionListener(this);
b18.setBounds(150,85,30,30);

b19 = new Button(“sqrt”);
b19.setBackground(Color.white);
b19.setForeground(Color.red);
add(b19);
b19.addActionListener(this);
b19.setBounds(150,50,30,30);

b20= new Button(“E”);
b20.setBackground(Color.gray);
b20.setForeground(Color.orange);
add(b20);
b20.addActionListener(this);
b20.setBounds(195,155,30,30);

b21 = new Button(“PI”);
b21.setBackground(Color.gray);
b21.setForeground(Color.orange);
add(b21);
b21.addActionListener(this);
b21.setBounds(195,120,30,30);

b22 = new Button(“n!”);
b22.setBackground(Color.gray);
b22.setForeground(Color.orange);
add(b22);
b22.addActionListener(this);
b22.setBounds(195,85,30,30);

b23 = new Button(“In”);
b23.setBackground(Color.gray);
b23.setForeground(Color.orange);
add(b23);
b23.addActionListener(this);
b23.setBounds(195,50,30,30);

b24= new Button(“sin”);
b24.setBackground(Color.gray);
b24.setForeground(Color.orange);
add(b24);
b24.addActionListener(this);
b24.setBounds(230,155,30,30);

b25 = new Button(“cos”);
b25.setBackground(Color.gray);
b25.setForeground(Color.orange);
add(b25);
b25.addActionListener(this);
b25.setBounds(230,120,30,30);

b26 = new Button(“tan”);
b26.setBackground(Color.gray);
b26.setForeground(Color.orange);
add(b26);
b26.addActionListener(this);
b26.setBounds(230,85,30,30);

b27 = new Button(“log”);
b27.setBackground(Color.gray);
b27.setForeground(Color.orange);
add(b27);
b27.addActionListener(this);
b27.setBounds(230,50,30,30);

b28= new Button(“asin”);
b28.setBackground(Color.gray);
b28.setForeground(Color.orange);
add(b28);
b28.addActionListener(this);
b28.setBounds(265,155,30,30);

b29 = new Button(“acos”);
b29.setBackground(Color.gray);
b29.setForeground(Color.orange);
add(b29);
b29.addActionListener(this);
b29.setBounds(265,120,30,30);

b30 = new Button(“atan”);
b30.setBackground(Color.gray);
b30.setForeground(Color.orange);
add(b30);
b30.addActionListener(this);
b30.setBounds(265,85,30,30);

b31 = new Button(“mod”);
b31.setBackground(Color.gray);
b31.setForeground(Color.orange);
add(b31);
b31.addActionListener(this);
b31.setBounds(265,50,30,30);

b32= new Button(“x^2”);
b32.setBackground(Color.gray);
b32.setForeground(Color.orange);
add(b32);
b32.addActionListener(this);
b32.setBounds(300,155,30,30);

   b33 = new Button("x^3");  
   b33.setBackground(Color.gray);  
    b33.setForeground(Color.orange);  
    add(b33);  
    b33.addActionListener(this);  
    b33.setBounds(300,120,30,30);  
      
    b34 = new Button("x^y");  
   b34.setBackground(Color.gray);  
   b34.setForeground(Color.orange);  
   add(b34);  
   b34.addActionListener(this);  
   b34.setBounds(300,85,30,30);  
  
   b35 = new Button("e^x");  
   b35.setBackground(Color.gray);  
   b35.setForeground(Color.orange);  
   add(b35);  
   b35.addActionListener(this);  
   b35.setBounds(300,50,30,30);  
     
   b36= new Button("M");  
   b36.setBackground(Color.blue);  
   b36.setForeground(Color.yellow);  
   add(b36);  
   b36.addActionListener(this);  
   b36.setBounds(345,155,30,30);     
     
   b37 = new Button("RM");  
   b37.setBackground(Color.blue);  
   b37.setForeground(Color.yellow);  
   add(b37);  
   b37.addActionListener(this);  
   b37.setBounds(345,120,30,30);  
     
   b38 = new Button("M2");  
   b38.setBackground(Color.blue);  
   b38.setForeground(Color.yellow);  
   add(b38);  
   b38.addActionListener(this);  
   b38.setBounds(345,85,30,30);  
  
   b39 = new Button("M3");  
   b39.setBackground(Color.blue);  
  b39.setForeground(Color.yellow);  
   add(b39);  
   b39.addActionListener(this);  
   b39.setBounds(345,50,30,30);  
     
   b40= new Button("C");  
   b40.setBackground(Color.red);  
   b40.setForeground(Color.white);  
   add(b40);  
   b40.addActionListener(this);  
   b40.setBounds(385,120,30,65);     
           
   b41 = new Button("CE");  
   b41.setBackground(Color.red);  
   b41.setForeground(Color.white);  
   add(b41);  
   b41.addActionListener(this);  
   b41.setBounds(385,50,30,65);                    
     
}  
  
public void actionPerformed(ActionEvent evt)  
 {  
    String s = evt.getActionCommand();  
      
    if (s.equals("C"))  
    {  
        operando1 = 0;  
              op = "=";  
        display.setText("0");           
             start = true;  
       }        
   else if('0' <= s.charAt(0) && s.charAt(0) <= '9'|| s.equals("."))  
   {  
      if (start)   
      {  
         display.setText(s);  
         start = false;  
      }  
      else   
      {  
          display.setText(display.getText() + s);  
       }  
    }  
    else  
    {  
      
          if (s.equals("PI"))  
         {  
             double aux = 1;  
             aux = Math.PI;  
             display.setText("" + aux);  
               
          }  
          if(s.equals("E"))  
          {  
             double aux = 1;  
             aux = Math.E;  
             display.setText("" + aux);  
          }  
          if(s.equals("%"))  
          {  
             double x = Double.parseDouble(display.getText());  
             double total = (operando1*x)/100;  
             display.setText("" + total);  
          }  
           if(s.equals("+/-"))   
          {  
             double total = 0;  
             double x = Double.parseDouble(display.getText());  
             if (x != 0)  
                total = (x * -1);  
             display.setText("" + total);  
          }  
            
          String memoria = "M RM M2 M3";  
            
          if(memoria.indexOf(s)!= -1)  
          {  
             JOptionPane.showMessageDialog(  
                null, "Este recursos será implementado na Calculadora versão 2.0 do aluysio e erick !!!");  
          }  

                        
          String comp = "sqrt In n! PI log tan cos sin x^2"  
                   + "x^3 asin acos atan e^x"   ;  
            
          if (comp.indexOf(s) != -1)  
          {  
             calculate1(Double.parseDouble  
                (display.getText()),s);  
             start = true;  
          }        
                  
          String comum = "= + - * / \u00d7 \u00f7 x^y mod";  
            
          if (s.equals("CE"))  
          {  
             display.setText("" + operando1);  
             op = s;  
             start = true;  
          }else if (comum.indexOf(s) != -1)  
          {  
             double x = Double.parseDouble(display.getText());  
             calculate(x);  
             op = s;  
             start = true;  
          }  
         
    }           
 }  
   
 public void calculate1(double opr,String op)  
 {  
    if (op.equals("sqrt")) opr = Math.sqrt(opr);  
    else if(op.equals("In")) opr = Math.log(opr);  
    else if(op.equals("n!")) opr = fatorial(opr);  
    else if(op.equals("log")) opr = Math.log(opr);  
    else if(op.equals("tan")) opr = Math.tan((opr*Math.PI) / 180);  
    else if(op.equals("cos")) opr = Math.cos((opr*Math.PI) / 180);  
    else if(op.equals("sin")) opr = Math.sin((opr*Math.PI) / 180) ;  
    else if(op.equals("asin")) opr = Math.asin(opr);  
    else if(op.equals("acos")) opr = Math.acos(opr);  
    else if(op.equals("atan")) opr = Math.atan(opr);  
    else if(op.equals("x^2")) opr = Math.pow(opr,2);  
    else if(op.equals("x^3")) opr = Math.pow(opr,3);  
    else if(op.equals("e^x")) opr = Math.exp(opr);               
                         
    display.setText("" + opr);  
 }  
   
 public double fatorial(double nro)  
 {  
    if(nro <=1)  
       return 1;  
    else  
       return nro*fatorial(nro-1);  
 }  
   
 public double umSobre(double nro)  
 {  
    if (nro != 0)  
       return ((1)/(nro));  
    else  
       return 0;  
 }                        
  
 public void calculate(double n)  
{  
      
   if (op.equals("+")) operando1 += n;  
   else if (op.equals("-")) operando1 -= n;  
   else if (op.equals("\u00d7")) operando1 *= n;  
   else if (op.equals("\u00f7")) operando1 /= n;  
   else if (op.equals("=")) operando1 = n;  
   else if (op.equals("x^y")) operando1 = Math.pow(operando1,n);  
   else if (op.equals("mod")) operando1 %= n;  
      
    display.setText("" + operando1);  
 }     
   
 private JTextField display;  
 private double operando1 = 0;  
 private BigDecimal memory[];  
 private boolean start = true;  
 private String op = "=";  
 private Button b1,b2,b3,b4,b5,b6,b7,b8,b9,b10,b11,b12,b13,b14,  
             b15,b16,b17,b18,b19,b20,b21,b22,b23,b24,b25,b26,  
             b27,b28,b29,b30,b31,b32,b33,b34,b35,b36,b37,b38,  
             b39,b40,b41;

}

import javax.swing.;
import java.awt.Container;
import java.awt.Menu;
import java.awt.MenuBar;
import java.awt.MenuItem;
import java.applet.;
import java.awt.Event;
/**
*
*/
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

/**

  • @author aluysio/erick

*/
class CalculatorFrame extends JFrame {

JTextArea t;

public CalculatorFrame() {
	setTitle("Calculadora - Programa faz-tudo");
	setSize(435, 240);
	addWindowListener(new WindowAdapter() {
		public void windowClosing(WindowEvent e) {
			System.exit(0);
		}
	});

	Container contentPane = getContentPane();
	contentPane.add(new CalculatorPanel());

	// -------------- Menu -----------------------

	MenuBar bar = new MenuBar();

	Menu calc = new Menu("Calculadora");
	MenuItem exit = new MenuItem("     Sair    ");
	calc.add(exit);
	exit.addActionListener(new ActionListener() {
		public void actionPerformed(ActionEvent e) {
			System.exit(0);
		}

		
		public void actionPerformed1(ActionEvent e) {
			// TODO Auto-generated method stub
			
		}
	});
	bar.add(calc);

	Menu about = new Menu("Sobre");
	bar.add(about);

	MenuItem about1 = new MenuItem(" Calculadora");
	about.add(about1);
	about1.addActionListener(new ActionListener() {
		public void actionPerformed(ActionEvent e) {
			JOptionPane.showMessageDialog(null,
					"Calculadora Versão 1.0 - Setembro/2008        " + "\n "
							+ "\n " + "\n\t Feito por Aluysio Nunes Campos e Erick Kunhavalik");
		}
	});
	bar.add(about);

	setMenuBar(bar);
	// --------------------------------------------
}

}

import javax.swing.JFrame;
/**
*
*/

/**

  • @author aluysio/ erick

*/

public class Calculadora
{
public static void main(String[] args)
{
CalculatorPanel calculadora =
new CalculatorPanel();
calculadora.show();

	CalculatorFrame tela = new CalculatorFrame();
	
	tela.show();
JFrame frame = new JFrame();
frame.show();


}

}

#2

Acho que seria interessante você continuar fazendo e postando alguma dúvida ou erro e não pendindo para alguém dar continuidade. As dúvidas referentes a como calcular binário, hexadecimal podem ser resolvidas perguntando ao google :wink: . Além do que isso esta me dando uma senção de eu-ja-vi-isso-antes.

#3

ok, porem, sou “novato” em java e estou com dificuldade de entender a lógica da expressão lógica, nao que eu não entenda fazer um exercicio na mão, mas sim um problema na lógica da implementação da calculadora.

nem na calculadora do windows eu entendi como é, vou tentar fazer as expressões lógicas separado da calculadora e vamos ver como podemos coloca-la

#4

Pois procure sempre estudar sobre sua aplicação antes de desenvolve-la. Isso vai te ajudar muito. Vá no google e pesquise sobre essas operações, tenho certeza que você vai achar alguma coisa.

[]'s

#5