Question

Help to fix Java GUI CALCULATOR code: This is a partial part of the program.

When i divide 16/6, i get 3. I don't want it to round up but I want it in decimal eg: 16/6 = 2.66666667

Code:

public class Calculator1 extends javax.swing.JFrame {

   double firstnum = 0.0;

   double secondnum = 0.0;

   double result = 0.0;

   

   String operation;

   

   public Calculator1() {

       initComponents();

   }

   

   private void jBtnEqualActionPerformed(java.awt.event.ActionEvent evt) {                                           

       secondnum = Double.parseDouble(jtxtDisplay.getText());

       String answer;

       switch(operation)

       {

           case "+":

               result = firstnum + secondnum;

               answer = String.format("%.0f", result);

               break;

               

           case "-":

               result = firstnum - secondnum;     

               answer = String.format("%.0f", result);

               break;

               

           case "*":

               result = firstnum * secondnum;

               answer = String.format("%.0f", result);

               break;

               

           case "/":

               result = firstnum / secondnum;

               answer = String.format("%.0f", result);

               break;

       }

       answer = String.format("%.0f", result);

       jtxtDisplay.setText(answer);

   }                                       

   private void jBtnPlusMinusActionPerformed(java.awt.event.ActionEvent evt) {                                              

   if(!jtxtDisplay.getText().equals(""))

   {

       double value = Double.parseDouble(jtxtDisplay.getText());

       value *= -1;

       jtxtDisplay.setText(String.format("%.0f", value));

   }

   }                                          

   private void jBtnMinus1ActionPerformed(java.awt.event.ActionEvent evt) {                                           

       firstnum = Double.parseDouble(jtxtDisplay.getText());

       jtxtDisplay.setText("");

       operation = "-";

Answer 1

Please use 16.0/6. or (double)16/6  

because 16 and 6 both are integers if you divide it will give only integer part only.. so convert one of the number to double so that you will get the result in the decimal

if you face any issues please post complete program

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