Thread: Java Calculator Square Root Function

Hi all new to java made a simple calculator for my uni project i have now been asked to add a square root function i have tried but the function doesn’t work and now neither does the calculator please help

Copy of my code:

package calculator;
 
//Calculator User Interface
 
import java.awt.BorderLayout;
import java.awt.GridLayout;
import javax.swing.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.lang.Math;
 
 
public class calculatorinterface implements ActionListener {
 
JFrame frame = new JFrame("Tom's Calculator");
JPanel panel = new JPanel(new GridLayout(4,3));
JPanel panel2 = new JPanel(new GridLayout(4,2));
JPanel background = new JPanel(new BorderLayout());
JTextArea text = new JTextArea(1,20);
 
JButton but1 = new JButton("1");
JButton but2 = new JButton("2");
JButton but3 = new JButton("3");
JButton but4 = new JButton("4");
JButton but5 = new JButton("5");
JButton but6 = new JButton("6");
JButton but7 = new JButton("7");
JButton but8 = new JButton("8");
JButton but9 = new JButton("9");
JButton but0 = new JButton("0");
 
JButton butadd = new JButton("+");
JButton butsub = new JButton("-");
JButton butmulti = new JButton("*");
JButton butdiv = new JButton("/");
JButton buteq = new JButton("=");
JButton butclear = new JButton("C");
 
// scientific calculator
JButton butsqrt = new JButton("sqrt");
 
 
 
Double number1,number2,result;
int addc=0,subc=0,multic=0,divc=0,sqrt=0;
 
 
public void ui()
{
 
frame.setVisible(true);
frame.setSize(300, 300);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOS E);
 
 
frame.add(background);
background.add("Center",panel);
background.add("East",panel2);
 
background.add("North",text);
 
panel.add(but1);
panel.add(but2);
panel.add(but3);
panel.add(but4);
panel.add(but5);
panel.add(but6);
panel.add(but7);
panel.add(but8);
panel.add(but9);
panel.add(but0);
panel.add(buteq);
panel.add(butclear);
 
panel2.add(butadd);
panel2.add(butsub);
panel2.add(butmulti);
panel2.add(butdiv);
panel2.add(butsqrt);
 
but1.addActionListener(this);
but2.addActionListener(this);
but3.addActionListener(this);
but4.addActionListener(this);
but5.addActionListener(this);
but6.addActionListener(this);
but7.addActionListener(this);
but8.addActionListener(this);
but9.addActionListener(this);
but0.addActionListener(this);
butadd.addActionListener(this);
butsub.addActionListener(this); 
butmulti.addActionListener(this);
butdiv.addActionListener(this); 
buteq.addActionListener(this);
butclear.addActionListener(this);
butsqrt.addActionListener(this);
}
 
 
@Override
public void actionPerformed(ActionEvent e) {
 
Object source = e.getSource();
if(source==butclear)
{
number1=0.0;
number2=0.0;
text.setText("");
 
}
 
 
 
if(source==but1)
{
text.append("1");
}
if(source==but2)
{
text.append("2");
}
if(source==but3)
{
text.append("3");
}
if(source==but4)
{
text.append("4");
}
if(source==but5)
{
text.append("5");
}
if(source==but6)
{
text.append("6");
}
if(source==but7)
{
text.append("7");
}
if(source==but8)
{
text.append("8");
}
if(source==but9)
{
text.append("9");
}
if(source==but0)
{
text.append("0");
}
if(source==butadd)
{
number1=number_reader();
text.setText("");
addc=1;
subc=0;
multic=0;
divc=0;
sqrt=0;
 
}
if(source==butsub)
{
number1=number_reader();
text.setText("");
addc=0;
subc=1;
multic=0;
divc=0;
sqrt=0;
 
}
if(source==butmulti)
{
number1=number_reader();
text.setText("");
addc=0;
subc=0;
multic=1;
divc=0;
sqrt=0;
 
}
if(source==butdiv)
{
number1=number_reader();
text.setText("");
addc=0;
subc=0;
multic=0;
divc=1;
sqrt=0;
 
if (source==butsqrt)
{
number1=number_reader();
addc=0;
subc=0;
multic=0;
divc=0;
sqrt=1;
}
 
 
 
if(source==buteq)
{
 
number2=number_reader();
if(addc>0)
{
result=number1+number2;
text.setText(Double.toString(result));
 
}
if(subc>0)
{
result=number1-number2;
text.setText(Double.toString(result));
 
}
if(multic>0)
{
result=number1*number2;
text.setText(Double.toString(result));
 
}
if(divc>0)
{
result=number1/number2;
text.setText(Double.toString(result));
 
 
if (sqrt>0)
result=Math.sqrt(number1);
text.setText(Double.toString(result));
 
}
}
}
 
 
 
 
 
}
 
 
public double number_reader()
{
Double num1;
String s;
s=text.getText();
num1=Double.valueOf(s);
 
return num1;
 
 
}
 
 
}

im sorry i thought these were differnt forums and whats an OP? and i signed up 2 both as the teahcer recomeneded them for if we got stuck all i wnted was to get my calculator working as before trying to add the square root function it worked fine and now it dosent atall sorry for any troubles caused