How to calculate your ideal weight

Interface

double weight = Double.parseDouble(jTextField5.getText());    

double heigth = Double.parseDouble(jTextField2.getText())

int gender = jComboBox1.getSelectedIndex();

double result = 0;

double imc;
            
              
        imc = (weight/(heigth*heigth));
       
        if (((gender==0) && (imc<20.7)) || ((gender==1) && (imc<19.1)))
        {
            jTextField1.setText("Underweigth");
        }
        else if (((gender==0) && (imc>=20.7 && imc<=26.4)) || ((gender==1) && (imc>=19.1 && imc>=25.8)))
        {
            jTextField1.setText("Normal Weigth");
        }
        else if (((gender==0) && (imc>26.4 && imc<27.8)) || ((gender==1) && (imc>25.8 && imc<27.3)))
        {
            jTextField1.setText("Slightly Overweight");
        }
       
        else if (((gender==0) && (imc>=27.8 && imc<=31.1)) || ((gender==1) && (imc>=27.3 && imc<=32.3)))
        {
            jTextField1.setText("Overweight");
        }
        else if (((gender==0) && (imc>32.1)) || ((sexo==1) && (imc>32.3)))
        {
            jTextField1.setText("Obese");
        }
       
        if (gender==0)
        {
            result = ((72.7*(height/100))-58);
        }
        else if (gender==1)
        {           
            result = ((62.1*(height/100))-44.7);
        }
       
        jTextField3.setText(String.valueOf(Math.round(result)));
    }