【分析解答题】

【说明】本程序实现功能：读入两个整数，第1个数除以第2个数，声明当除数为零时抛出异常类DivideByZeroException。public classDivideByZeroException{{U}} (1) {{/U}}{ publicDivideByZeroException ( ) { super("Attcmpted to divide by zero"); } }import jav

A、io. *;public classExample { private static int quotient(int numerator, in)\”}t denominator) throwsDivideByZeroException {if (denominator==0) throw{{U}} (2) {{/U}};return(numerator / denominator); } public static void main(String args[]) {int number1=0, number2=0, result0;try{ System.out.print1n("Enter the first number:"); number1 = Integer. valueOf(KeyboarD、getString()).intValue(); System.out.print1n("Enter the second number:"); number2 = Integer. Va1ueOf(KeyboarD、getString()).intValue(); result = quotient(number1,number2);}catch (NumberFormatException e) { System.out.print1n("Invalid integer entered!"); System. exit(-1);}catch ({{U}} (3) {{/U}}) { System.out.print1n(e.to String()); System.exit(-1);}Systcm.out.pfint1n(number1 + "/" + number2 + "=" + result);}}其中, Keyboard类的声明为:import jav
A、io.*; public class Keyboard{ staticBufferedReader inputStream ={{U}} (4) {{/U}} (new InputStreamReader(System.in)); public static int getInteger() {try(return (Intoger.valueOf(inputStream.readLine().trim()).intValue());} catchException e) { e.printStackTrace(); return 0;} } public static String getString() { try{ return (inputStream.readLine()); } catch ({{U}} (5) {{/U}}) { return "0";} }}