Dieses Programm berechnet aus erreichten und möglichen Punkten die Note

   public void jButton1_ActionPerformed(ActionEvent evt) {
    double a = jNumberField1.getDouble();
    double b = jNumberField2.getDouble();
    double c = a/b;
 
    if (c<0.2) {
       jTextField1.setText("Note 6");
       } // end of if
 
    else if (c<0.4) {
         jTextField1.setText("Note 5");
    } // end of if-else
 
    else if (c<0.55){
           jTextField1.setText("Note 4");
 
    } // end of if-else
 
    else if (c<0.7){
           jTextField1.setText("Note 3");
    } // end of if-else
 
    else if (c<0.85) {
             jTextField1.setText("Note 2");
    } // end of if-else
 
    else {
          jTextField1.setText("Note 1");
    } // end of if-else
  } // end of jButton1_ActionPerformed
 

—- Jonas Rimbach