Question

Mr. Sahil, a Programmer in a VISA processing company, has written the following code : 

int ch = integer.parseInt(jTextField1.getText0);

switch(ch)

{

case 1 :

jTextField2.setText("Short Term Single Entry Visa Granted");

case 2 :

jTextField2.setText("Short Term Multiple Entry Visa Granted");

case 3 :

jTextField2.setText("Short Term Single Entry Visa Granted");

case 4 :

jTextField2.setText("Short Term Multiple Entry Visa Granted'');

default:

jTextField2.setText("Invalid Entty") ;

}

No Matter what value is being entered in the text field jTextField1, this program always give a message "Invalid Entry". Help Mr. Sahil in identifying the problem and its reason. Also suggest him a suitable correction in the code.

Answer 1

In absence of break 'fall through' condition occurs. As a result control will not be able to come out of the switch block after first matching. So, all the message will be overwritten by the last message i.e., " Invalid Entry" due to setText() method.

He should use the break statement at the end of each case.