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How to make a simple calculator with GUI in JAVA (using Netbeans)?

First of all create a new package , then create a simple class. Then create a new JFrame Form class. On the right side you will find every tool needed like buttons textfield radio buttons etc. We'll need the buttons and text field and a JLabel Drag and drop required buttons you want to appear on the calculator eg. 1,2,3,4,5,6,7,8,9,0,+,-,*,/,=,AC,OFF arrange them all then on double clicking any button you will enter the source code tab, for digits 0-9 you have to write this code:         String Number =answer.getText() +  one.getText();         answer.setText(Number); Here answer is the jTextFields variable name you can right click the text field and click change variable name. similarly you have to set the code for every digit then for operations you have to write the code: for "+" operation: firstnumber = Double.parseDouble(answer.getText());         jLabel1.setText(answer.getText()+"+"); ...
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How to make a simple calculator?

Today ill share procedure to make a simple calculator.

Heres the code below: 

#include <iostream>
using namespace std;
int main()
{

 char sign;
 float a;
 float b;
 float c;
 cout<<endl;
 cout<<"  Enter 1st number: ";
 
 cin>>a;
 cout<<endl;
 cout<<"  Enter operator:  ";
 
 cin>>sign;
 cout<<endl;
 cout<<"  Enter 2nd number: ";
 
 cin>>b;
 cout<<endl;

 
while(a)
{
 switch(sign)
 { 
 case '+':
  c=a+b;
  
  cout<<"  Your answer is "<<c<<" "; 
 break;
 case '-':
  c=a-b;
  
  cout<<"  Your answer is "<<c<<" "; 
 break;
 case '*':
  c=a*b;
  
  cout<<"  Your answer is "<<c<<" "; 
 break;
 case '/':
  c=a/b;
  
  cout<<"  Your answer is "<<c<<" "; 
 break;


 }
cout<<endl;
 cout<<endl;
 cout<<" \n\n  Enter 1st number: ";
 cin>>a;
 cout<<endl;
 cout<<"  Enter operator:  ";
 cin>>sign;
 cout<<endl;
 cout<<"  Enter 2nd number: ";
 cin>>b;
 cout<<endl;

}

return 0;
}

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