异常处理小练习

package day1_31;

/**
 * 异常处理小练习
 */
public class ExceptionTest {
    public static void main(String[] args){
        try {
            String[] arr = {"13","6"};
            int result = method(arr);
            System.out.println(result);
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }

    public static int method(String[] args) throws RuntimeException {
        if (args.length != 2) {
            throw new ArrayIndexOutOfBoundsException("没有输入两个数字");
        }
        int one;
        int two;
        try {
            one = Integer.parseInt(args[0]);
            two = Integer.parseInt(args[1]);
        } catch (NumberFormatException e) {
            throw new NumberFormatException("没有输入数字类型");
        }

        if (two == 0) {
            throw new ArithmeticException("被除数不能为0");
        }

        if (one < 0 || two < 0) {
            throw new MyException("不能输入负数");
        }

        return one/two;
    }
}

  自定义异常类MyException

package day1_31;

public class MyException extends RuntimeException {
    static final long serialVersionUID = -3387513124229948L;

    public MyException() {
        super();
    }

    public MyException(String message) {
        super(message);
    }

}