嘗試接受 [0,1,2,3,4] 范圍內(nèi)的用戶輸入，直到他輸入有效數(shù)字。使用try-catch修復異常錯誤   boolean good = true;   int x = reader.nextInt();    while (good != false) {    try {        if (x > launchEventList.size()-1) {            System.out.println("Please provide a valid input");            reader.nextInt();        } else {              System.out.println("\nDetails of event on index "+ x + " are ==>> " + getLe(x));            good = false;        }    }    catch (IndexOutOfBoundsException e) {        System.out.println("Invalid Input");    }