i wrote this code to control input so user cannot enter anything except integers but problem is that: when an Exception occures, the message in Exception block is continousely printed and never ends, what i can do ?
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int i=0;
boolean success = false;
System.out.println("Enter an int numbers :");
while(!success) {//"while loop" will continue until user enters an integer
try {
i = scanner.nextInt();
success=true;//if user entered an integer "while loop" will end, or if user entered another type Exception will occur
}catch(InputMismatchException e) {
System.out.println(" enter only integers ");
}
}
System.out.println(i);
}
Add scanner.nextLine(); in your try and catch block. Like this
while(!success) {//"while loop" will continue until user enters an integer
try {
i = scanner.nextInt();
success=true;//if user entered an integer "while loop" will end, or if user entered another type Exception will occur
scanner.nextLine();
}catch(InputMismatchException e) {
System.out.println(" enter only integers ");
scanner.nextLine();
}
}
You can also add just one scanner.nextLine() in the finaly block, which should be below catch