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Calculator.java
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Calculator.java
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import java.awt.event.*;
import javax.swing.*;
import Calc_package.Normal_calculation;
import Calc_package.Scientific_calculation;
public class Calculator implements ActionListener
{
JFrame f;
JTextField tf;
JButton button;
String exp;
JCheckBox degree,radian,shift;
JLabel l1;
String[] num;
ImageIcon icon;
Normal_calculation nc;
Scientific_calculation sc;
//Constructor for window layout
Calculator()
{
nc=new Normal_calculation();
sc=new Scientific_calculation();
f=new JFrame("Calc");
tf=new JTextField();
icon=new ImageIcon(getClass().getClassLoader().getResource("calc.png"));
f.setIconImage(icon.getImage());
degree = new JCheckBox("Degree");
radian=new JCheckBox("Radian",true);
shift=new JCheckBox("Shift");
tf.setBounds(10,5,490,30);
String[] num={"1","2","3","x^2","x^3","x^n","4","5","6","1/x","n!","sqrt","7","8","9","sin","cos","tan","0","C","+","cosec","sec","cot","-","*","/","log","ln","e^x",".","(",")","pi","x10^X","=","AC"};
int row=0,y=150,col=0;
for(int i=0;i<37;i++)
{
if(num[i].equals("sin"))
{
button=new JButton("<html>sin<br>sin^-1</html>");
}
else if(num[i].equals("cos"))
{
button=new JButton("<html>cos<br>cos^-1</html>");
}
else if(num[i].equals("tan"))
{
button=new JButton("<html>tan<br>tan^-1</html>");
}
else if(num[i].equals("cosec"))
{
button=new JButton("<html>cosec<br>cosec^-1</html>");
}
else if(num[i].equals("cot"))
{
button=new JButton("<html>cot<br>cot^-1</html>");
}
else if(num[i].equals("sec"))
{
button=new JButton("<html>sec<br>sec^-1</html>");
}
else
{
button=new JButton(num[i]);
}
button.addActionListener(this);
if(i==36)
{
button.setBounds(260,100,245,40);
}
else if(i==35)
{
button.setBounds(10,100,245,40);
}
else{if(row==6)
{
row=0;
col++;
}
if(row!=6)
{
button.setBounds(10+(85*row),y+(55*col),75,45);
row++;
}
}
f.add(button);
}
degree.setBounds(40,40,70,50);
radian.setBounds(150,40,70,50);
shift.setBounds(260,40,250,50);
f.add(radian);
f.add(degree);
f.add(shift);
f.add(tf);
f.setSize(535,520);
f.setLayout(null);
f.setVisible(true);
f.setLocationRelativeTo(null);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
//overriding the actionPerformed function
public void actionPerformed(ActionEvent e)
{
String s=e.getActionCommand();
double a;
if(s.equals("0"))
tf.setText(tf.getText()+"0");
if(s.equals("1"))
tf.setText(tf.getText()+"1");
if(s.equals("2"))
tf.setText(tf.getText()+"2");
if(s.equals("3"))
tf.setText(tf.getText()+"3");
if(s.equals("4"))
tf.setText(tf.getText()+"4");
if(s.equals("5"))
tf.setText(tf.getText()+"5");
if(s.equals("6"))
tf.setText(tf.getText()+"6");
if(s.equals("7"))
tf.setText(tf.getText()+"7");
if(s.equals("8"))
tf.setText(tf.getText()+"8");
if(s.equals("9"))
tf.setText(tf.getText()+"9");
if(s.equals("("))
tf.setText(tf.getText()+"(");
if(s.equals(")"))
tf.setText(tf.getText()+")");
if(s.equals("+"))
tf.setText(tf.getText()+"+");
if(s.equals("-"))
tf.setText(tf.getText()+"-");
if(s.equals("*"))
tf.setText(tf.getText()+"*");
if(s.equals("/"))
tf.setText(tf.getText()+"/");
if(s.equals("."))
tf.setText(tf.getText()+".");
if(s.equals("x^n"))
tf.setText(tf.getText()+"^");
if(s.equals("C"))
{
String ch=tf.getText();
int n=ch.length();
String subString=ch.substring(0,n-1);
tf.setText(subString);
}
if(s.equals("AC"))
tf.setText("");
if (s.equals("log"))
{
if (tf.getText().equals(""))
tf.setText("");
else
{
a = sc.log(tf.getText());
tf.setText("");
tf.setText(tf.getText() + a);
}
}
if(s.equals("ln"))
{
if(tf.getText().equals(""))
tf.setText("");
else
{
a=sc.ln(tf.getText());
tf.setText("");
tf.setText(tf.getText()+a);
}
}
if(s.equals("e^x"))
{
if(tf.getText().equals(""))
tf.setText("");
else
{
a=sc.exp(tf.getText());
tf.setText("");
tf.setText(tf.getText()+a);
}
}
if(s.equals("x10^X"))
{
if(tf.getText().equals(""))
tf.setText("10^");
else
{
tf.setText(tf.getText()+"*10^");
}
}
if (s.equals("1/x"))
{
if (tf.getText().equals(""))
tf.setText("");
else
{
a =sc.onebyx(tf.getText());
tf.setText("");
tf.setText(tf.getText() + a);
}
}
if(s.equals("pi"))
tf.setText(tf.getText()+Math.PI);
if (s.equals("x^2"))
{
if (tf.getText().equals(""))
tf.setText("");
else
tf.setText(tf.getText() +"^2");
}
if (s.equals("x^3"))
{
if (tf.getText().equals(""))
tf.setText("");
else
tf.setText(tf.getText() + "^3");
}
if(s.equals("sqrt"))
{
if(tf.getText().equals(""))
tf.setText("");
else
tf.setText(tf.getText()+"^(1/2)");
}
if (s.equals("<html>sin<br>sin^-1</html>"))
{
if (tf.getText().equals(""))
tf.setText("");
else if(radian.isSelected()&°ree.isSelected())
tf.setText("Please select any one!!");
else if(radian.isSelected()&&shift.isSelected())
{
a=sc.asin_rad(tf.getText());
tf.setText("");
tf.setText(tf.getText()+a);
}
else if(degree.isSelected()&&shift.isSelected())
{
a=sc.asin_deg(tf.getText());
tf.setText("");
tf.setText(tf.getText()+(float)a);
}
else if(radian.isSelected())
{
a = sc.sin_rad(tf.getText());
tf.setText("");
tf.setText(tf.getText() + a);
}
else if(degree.isSelected())
{
a=sc.sin_deg(tf.getText());
tf.setText("");
tf.setText(tf.getText()+a);
}
else
tf.setText("Select appropitate option!!");
}
if (s.equals("<html>cos<br>cos^-1</html>"))
{
if (tf.getText().equals(""))
tf.setText("");
else if(radian.isSelected()&°ree.isSelected())
tf.setText("Please select any one!!");
else if(radian.isSelected()&&shift.isSelected())
{
a=sc.acos_rad(tf.getText());
tf.setText("");
tf.setText(tf.getText()+a);
}
else if(degree.isSelected()&&shift.isSelected())
{
a=sc.acos_deg(tf.getText());
tf.setText("");
tf.setText(tf.getText()+(float)a);
}
else if(radian.isSelected())
{
a =sc.cos_rad(tf.getText());
tf.setText("");
tf.setText(tf.getText() +a);
}
else if(degree.isSelected())
{
a=sc.cos_deg(tf.getText());
tf.setText("");
tf.setText(tf.getText()+a);
}
else
tf.setText("Select appropitate option!!");
}
if (s.equals("<html>tan<br>tan^-1</html>"))
{
if (tf.getText().equals(""))
tf.setText("");
else if(radian.isSelected()&°ree.isSelected())
tf.setText("Please select any one!!");
else if(radian.isSelected()&&shift.isSelected())
{
a=sc.atan_rad(tf.getText());
tf.setText("");
tf.setText(tf.getText()+a);
}
else if(degree.isSelected()&&shift.isSelected())
{
a=sc.atan_deg(tf.getText());
tf.setText("");
tf.setText(tf.getText()+(float)a);
}
else if(radian.isSelected())
{
a = sc.tan_rad(tf.getText());
tf.setText("");
tf.setText(tf.getText() + a);
}
else if(degree.isSelected())
{
a=sc.tan_deg(tf.getText());
tf.setText("");
tf.setText(tf.getText()+(float)a);
}
else
tf.setText("Select appropitate option!!");
}
if (s.equals("<html>cosec<br>cosec^-1</html>"))
{
if (tf.getText().equals(""))
tf.setText("");
else if(radian.isSelected()&°ree.isSelected())
tf.setText("Please select any one!!");
else if(radian.isSelected()&&shift.isSelected())
{
a=sc.acosec_rad(tf.getText());
tf.setText("");
tf.setText(tf.getText()+a);
}
else if(degree.isSelected()&&shift.isSelected())
{
a=sc.acosec_deg(tf.getText());
tf.setText("");
tf.setText(tf.getText()+(float)a);
}
else if(radian.isSelected())
{
a = sc.cosec_rad(tf.getText());
tf.setText("");
tf.setText(tf.getText() + a);
}
else if(degree.isSelected())
{
a= sc.cosec_deg(tf.getText());
tf.setText("");
tf.setText(tf.getText()+a);
}
else
tf.setText("Select appropitate option!!");
}
if (s.equals("<html>sec<br>sec^-1</html>"))
{
if (tf.getText().equals(""))
tf.setText("");
else if(radian.isSelected()&°ree.isSelected())
tf.setText("Please select any one!!");
else if(radian.isSelected()&&shift.isSelected())
{
a=sc.asec_rad(tf.getText());
tf.setText("");
tf.setText(tf.getText()+a);
}
else if(degree.isSelected()&&shift.isSelected())
{
a=sc.asec_deg(tf.getText());
tf.setText("");
tf.setText(tf.getText()+(float)a);
}
else if(radian.isSelected())
{
a = sc.sec_rad(tf.getText());
tf.setText("");
tf.setText(tf.getText() +a);
}
else if(degree.isSelected())
{
a=sc.sec_deg(tf.getText());
tf.setText("");
tf.setText(tf.getText()+a);
}
else
tf.setText("Select appropitate option!!");
}
if (s.equals("<html>cot<br>cot^-1</html>"))
{
if (tf.getText().equals(""))
tf.setText("");
else if(radian.isSelected()&°ree.isSelected())
tf.setText("Please select any one!!");
else if(radian.isSelected()&&shift.isSelected())
{
a=sc.acot_rad(tf.getText());
tf.setText("");
tf.setText(tf.getText()+a);
}
else if(degree.isSelected()&&shift.isSelected())
{
a=sc.acot_deg(tf.getText());
tf.setText("");
tf.setText(tf.getText()+(float)a);
}
else if(radian.isSelected())
{
a =sc.cot_rad(tf.getText());
tf.setText("");
tf.setText(tf.getText() + a);
}
else if(degree.isSelected())
{
a=sc.cot_deg(tf.getText());
tf.setText("");
tf.setText(tf.getText()+a);
}
else
tf.setText("Select appropitate option!!");
}
if(s.equals("n!"))
{
if(tf.getText().equals(""))
tf.setText("");
else
{
a=nc.fact(tf.getText());
tf.setText("");
tf.setText(tf.getText()+a);
}
}
if(s.equals("="))
{
if(tf.getText().equals(" "))
tf.setText(" ");
else
{
exp=tf.getText();
float ans;
try
{
ans = nc.evaluate(exp);
String ans1=String.valueOf(ans);
tf.setText(ans1);
}
catch(Exception e1)
{
tf.setText("Not possible");
}
}
}
}
//Main function
public static void main(String args[])
{
new Calculator();
}
}