使用例外處理
import java.util.InputMismatchException;
import java.util.Scanner;
public class DivideByZero
{
public static int quotient(int numerator, int denominator )
throws ArithmeticException
{
return numerator / denominator;
}
public static void main (String args[] )
{
Scanner scanner = new Scanner( System.in );
boolean continueLoop = true;
do
{
try
{
System.out.print("請輸入被除數：");
int numerator = scanner.nextInt();
System.out.print("請輸入除數：");
int denominator = scanner.nextInt();
int result = quotient ( numerator, denominator );
System.out.printf("\n答案：%d / %d = %d\n" , numerator, denominator, result);
continueLoop = false;
}
catch ( InputMismatchException inputMismatchException )
{
System.err.printf("\nException：%s\n", inputMismatchException);
scanner.nextLine();
System.out.println("你必須輸入整數，請再試一次。\n");
}
catch ( ArithmeticException arithmeticException )
{
System.err.printf("\nException：%s\n", arithmeticException);
System.out.println("發生除以０的錯誤，請再試一次。\n");
}
}while ( continueLoop );
}
}
import java.util.InputMismatchException;
import java.util.Scanner;
public class DivideByZero
{
public static int quotient(int numerator, int denominator )
throws ArithmeticException
{
return numerator / denominator;
}
public static void main (String args[] )
{
Scanner scanner = new Scanner( System.in );
boolean continueLoop = true;
do
{
try
{
System.out.print("請輸入被除數：");
int numerator = scanner.nextInt();
System.out.print("請輸入除數：");
int denominator = scanner.nextInt();
int result = quotient ( numerator, denominator );
System.out.printf("\n答案：%d / %d = %d\n" , numerator, denominator, result);
continueLoop = false;
}
catch ( InputMismatchException inputMismatchException )
{
System.err.printf("\nException：%s\n", inputMismatchException);
scanner.nextLine();
System.out.println("你必須輸入整數，請再試一次。\n");
}
catch ( ArithmeticException arithmeticException )
{
System.err.printf("\nException：%s\n", arithmeticException);
System.out.println("發生除以０的錯誤，請再試一次。\n");
}
}while ( continueLoop );
}
}
全站熱搜
留言列表
