write a program on eclipse where you would build your own scientific calculator that can use...
write a program on eclipse where you would build your own scientific calculator that can use algebraic notations
Homework Answers
package lecture;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.event.*;
public class scienticalci extends JFrame implements
ActionListener {
JTextField textfield;
double temporary, temporary1, r, tempa;
static double tm1, tm2;
int k = 1, x1 = 0, y1 = 0, z1 = 0;
char choice;
JButton button1, button2, button3, button4, button5,
button6, button7, button8, button9, zero, clr, pow2, pow3,
exp,
fac, plus,
minus, division, logrithmic, rec, multiplication, eq, addSub, dot,
mr, mc, mp,
mm, sqrt, sin,
cos, tan;
Container container;
JPanel tpane, bpane;
scienticalci() {
container = getContentPane();
container.setLayout(new
BorderLayout());
JPanel textpanel = new
JPanel();
textfield = new
JTextField(25);
textfield.setHorizontalAlignment(SwingConstants.RIGHT);
textfield.addKeyListener(new
KeyAdapter() {
public void
keyTyped(KeyEvent keyevent) {
char c = keyevent.getKeyChar();
if (c >= '0' && c <= '9') {
} else {
keyevent.consume();
}
}
});
textpanel.add(textfield);
bpane = new JPanel();
bpane.setLayout(new GridLayout(8,
4, 2, 2));
boolean t = true;
mr = new JButton("MR");
bpane.add(mr);
mr.addActionListener(this);
mc = new JButton("MC");
bpane.add(mc);
mc.addActionListener(this);
mp = new JButton("M+");
bpane.add(mp);
mp.addActionListener(this);
mm = new JButton("M-");
bpane.add(mm);
mm.addActionListener(this);
button1 = new
JButton("1");
bpane.add(button1);
button1.addActionListener(this);
button2 = new JButton("2");
bpane.add(button2);
button2.addActionListener(this);
button3 = new JButton("3");
bpane.add(button3);
button3.addActionListener(this);
button4 = new
JButton("4");
bpane.add(button4);
button4.addActionListener(this);
button5 = new JButton("5");
bpane.add(button5);
button5.addActionListener(this);
button6 = new JButton("6");
bpane.add(button6);
button6.addActionListener(this);
button7 = new
JButton("7");
bpane.add(button7);
button7.addActionListener(this);
button8 = new JButton("8");
bpane.add(button8);
button8.addActionListener(this);
button9 = new JButton("9");
bpane.add(button9);
button9.addActionListener(this);
zero = new JButton("0");
bpane.add(zero);
zero.addActionListener(this);
plus = new JButton("+");
bpane.add(plus);
plus.addActionListener(this);
minus = new JButton("-");
bpane.add(minus);
minus.addActionListener(this);
multiplication = new
JButton("*");
bpane.add(multiplication);
multiplication.addActionListener(this);
division = new
JButton("/");
division.addActionListener(this);
bpane.add(division);
addSub = new
JButton("+/-");
bpane.add(addSub);
addSub.addActionListener(this);
dot = new JButton(".");
bpane.add(dot);
dot.addActionListener(this);
eq = new JButton("=");
bpane.add(eq);
eq.addActionListener(this);
rec = new JButton("1/x1");
bpane.add(rec);
rec.addActionListener(this);
sqrt = new JButton("Sqrt");
bpane.add(sqrt);
sqrt.addActionListener(this);
logrithmic = new
JButton("logrithmic");
bpane.add(logrithmic);
logrithmic.addActionListener(this);
sin = new JButton("SIN");
bpane.add(sin);
sin.addActionListener(this);
cos = new JButton("COS");
bpane.add(cos);
cos.addActionListener(this);
tan = new JButton("TAN");
bpane.add(tan);
tan.addActionListener(this);
pow2 = new JButton("x1^2");
bpane.add(pow2);
pow2.addActionListener(this);
pow3 = new JButton("x1^3");
bpane.add(pow3);
pow3.addActionListener(this);
exp = new JButton("Exp");
exp.addActionListener(this);
bpane.add(exp);
fac = new JButton("n!");
fac.addActionListener(this);
bpane.add(fac);
clr = new JButton("AC");
bpane.add(clr);
clr.addActionListener(this);
container.add("Center",
bpane);
container.add("North",
textpanel);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public void actionPerformed(ActionEvent e) {
String temps =
e.getActionCommand();
if (temps.equals("1")) {
if (z1 == 0)
{
textfield.setText(textfield.getText() +
"1");
} else {
textfield.setText("");
textfield.setText(textfield.getText() +
"1");
z1 = 0;
}
}
if (temps.equals("2")) {
if (z1 == 0)
{
textfield.setText(textfield.getText() +
"2");
} else {
textfield.setText("");
textfield.setText(textfield.getText() +
"2");
z1 = 0;
}
}
if (temps.equals("3")) {
if (z1 == 0)
{
textfield.setText(textfield.getText() +
"3");
} else {
textfield.setText("");
textfield.setText(textfield.getText() +
"3");
z1 = 0;
}
}
if (temps.equals("4")) {
if (z1 == 0)
{
textfield.setText(textfield.getText() +
"4");
} else {
textfield.setText("");
textfield.setText(textfield.getText() +
"4");
z1 = 0;
}
}
if (temps.equals("5")) {
if (z1 == 0)
{
textfield.setText(textfield.getText() +
"5");
} else {
textfield.setText("");
textfield.setText(textfield.getText() +
"5");
z1 = 0;
}
}
if (temps.equals("6")) {
if (z1 == 0)
{
textfield.setText(textfield.getText() +
"6");
} else {
textfield.setText("");
textfield.setText(textfield.getText() +
"6");
z1 = 0;
}
}
if (temps.equals("7")) {
if (z1 == 0)
{
textfield.setText(textfield.getText() +
"7");
} else {
textfield.setText("");
textfield.setText(textfield.getText() +
"7");
z1 = 0;
}
}
if (temps.equals("8")) {
if (z1 == 0)
{
textfield.setText(textfield.getText() +
"8");
} else {
textfield.setText("");
textfield.setText(textfield.getText() +
"8");
z1 = 0;
}
}
if (temps.equals("9")) {
if (z1 == 0)
{
textfield.setText(textfield.getText() +
"9");
} else {
textfield.setText("");
textfield.setText(textfield.getText() +
"9");
z1 = 0;
}
}
if (temps.equals("0")) {
if (z1 == 0)
{
textfield.setText(textfield.getText() +
"0");
} else {
textfield.setText("");
textfield.setText(textfield.getText() +
"0");
z1 = 0;
}
}
if (temps.equals("AC")) {
textfield.setText("");
x1 = 0;
y1 = 0;
z1 = 0;
}
if (temps.equals("logrithmic"))
{
if
(textfield.getText().equals("")) {
textfield.setText("");
} else {
tempa =
Math.log(Double.parseDouble(textfield.getText()));
textfield.setText("");
textfield.setText(textfield.getText() +
tempa);
}
}
if (temps.equals("1/x1")) {
if
(textfield.getText().equals("")) {
textfield.setText("");
} else {
tempa = 1 /
Double.parseDouble(textfield.getText());
textfield.setText("");
textfield.setText(textfield.getText() +
tempa);
}
}
if (temps.equals("Exp")) {
if
(textfield.getText().equals("")) {
textfield.setText("");
} else {
tempa =
Math.exp(Double.parseDouble(textfield.getText()));
textfield.setText("");
textfield.setText(textfield.getText() +
tempa);
}
}
if (temps.equals("x1^2")) {
if
(textfield.getText().equals("")) {
textfield.setText("");
} else {
tempa =
Math.pow(Double.parseDouble(textfield.getText()), 2);
textfield.setText("");
textfield.setText(textfield.getText() +
tempa);
}
}
if (temps.equals("x1^3")) {
if
(textfield.getText().equals("")) {
textfield.setText("");
} else {
tempa =
Math.pow(Double.parseDouble(textfield.getText()), 3);
textfield.setText("");
textfield.setText(textfield.getText() +
tempa);
}
}
if (temps.equals("+/-")) {
if (x1 == 0)
{
textfield.setText("-" +
textfield.getText());
x1 = 1;
} else {
textfield.setText(textfield.getText());
}
}
if (temps.equals(".")) {
if (y1 == 0)
{
textfield.setText(textfield.getText() +
".");
y1 = 1;
} else {
textfield.setText(textfield.getText());
}
}
if (temps.equals("+")) {
if
(textfield.getText().equals("")) {
textfield.setText("");
temporary = 0;
choice = '+';
} else {
temporary =
Double.parseDouble(textfield.getText());
textfield.setText("");
choice = '+';
y1 = 0;
x1 = 0;
}
textfield.requestFocus();
}
if (temps.equals("-")) {
if
(textfield.getText().equals("")) {
textfield.setText("");
temporary = 0;
choice = '-';
} else {
x1 = 0;
y1 = 0;
temporary =
Double.parseDouble(textfield.getText());
textfield.setText("");
choice = '-';
}
textfield.requestFocus();
}
if (temps.equals("/")) {
if
(textfield.getText().equals("")) {
textfield.setText("");
temporary = 1;
choice = '/';
} else {
x1 = 0;
y1 = 0;
temporary =
Double.parseDouble(textfield.getText());
choice = '/';
textfield.setText("");
}
textfield.requestFocus();
}
if (temps.equals("*")) {
if
(textfield.getText().equals("")) {
textfield.setText("");
temporary = 1;
choice = '*';
} else {
x1 = 0;
y1 = 0;
temporary =
Double.parseDouble(textfield.getText());
choice = '*';
textfield.setText("");
}
textfield.requestFocus();
}
if (temps.equals("MC")) {
tm1 = 0;
textfield.setText("");
}
if (temps.equals("MR")) {
textfield.setText("");
textfield.setText(textfield.getText() + tm1);
}
if (temps.equals("M+")) {
if (k == 1)
{
tm1 =
Double.parseDouble(textfield.getText());
k++;
} else {
tm1 +=
Double.parseDouble(textfield.getText());
textfield.setText("" + tm1);
}
}
if (temps.equals("M-")) {
if (k == 1)
{
tm1 =
Double.parseDouble(textfield.getText());
k++;
} else {
tm1 -=
Double.parseDouble(textfield.getText());
textfield.setText("" + tm1);
}
}
if (temps.equals("Sqrt")) {
if
(textfield.getText().equals("")) {
textfield.setText("");
} else {
tempa =
Math.sqrt(Double.parseDouble(textfield.getText()));
textfield.setText("");
textfield.setText(textfield.getText() +
tempa);
}
}
if (temps.equals("SIN")) {
if
(textfield.getText().equals("")) {
textfield.setText("");
} else {
tempa =
Math.sin(Double.parseDouble(textfield.getText()));
textfield.setText("");
textfield.setText(textfield.getText() +
tempa);
}
}
if (temps.equals("COS")) {
if
(textfield.getText().equals("")) {
textfield.setText("");
} else {
tempa =
Math.cos(Double.parseDouble(textfield.getText()));
textfield.setText("");
textfield.setText(textfield.getText() +
tempa);
}
}
if (temps.equals("TAN")) {
if
(textfield.getText().equals("")) {
textfield.setText("");
} else {
tempa =
Math.tan(Double.parseDouble(textfield.getText()));
textfield.setText("");
textfield.setText(textfield.getText() +
tempa);
}
}
if (temps.equals("=")) {
if
(textfield.getText().equals("")) {
textfield.setText("");
} else {
temporary1 =
Double.parseDouble(textfield.getText());
switch (choice) {
case '+':
r = temporary +
temporary1;
break;
case '-':
r = temporary -
temporary1;
break;
case '/':
r = temporary /
temporary1;
break;
case '*':
r = temporary *
temporary1;
break;
}
textfield.setText("");
textfield.setText(textfield.getText() +
r);
z1 = 1;
}
}
if (temps.equals("n!")) {
if
(textfield.getText().equals("")) {
textfield.setText("");
} else {
tempa =
fact(Double.parseDouble(textfield.getText()));
textfield.setText("");
textfield.setText(textfield.getText() +
tempa);
}
}
textfield.requestFocus();
}
double fact(double x1) {
int er = 0;
if (x1 < 0) {
er = 20;
return 0;
}
double p, temps = 1;
for (p = 2; p <= x1; p +=
1.0)
temps *=
p;
return temps;
}
public static void main(String args[]) {
try {
UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
} catch (Exception e) {
}
SwingCalculator f = new
SwingCalculator();
f.setTitle("ScientificCalculator");
f.pack();
f.setVisible(true);
}
}
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