# 1

```java
public class Domo01 {

    public static void main(String[] args) {

            int divisor = 100;
            int dividend = 10;
            try {
                System.out.println(divisor/dividend);
            }catch (Exception e) {
                //  e.printStackTrace();
                System.out.println("除数不能为0");
            } finally {
                // 资源的释放
                System.out.println("必须要执行的步骤，一定会执行");
            }
            System.out.println("666666");
        }
    }

2

public class Domo02 {
    public static void main(String[] args) {

/*
        int[] a = new int[2];
        Scanner scanner = new Scanner(System.in);
        try {
        int i = scanner.nextInt();
        int j = scanner.nextInt();
            a[0] = i;
            a[1] = j;
            System.out.println(a[0] + a[1]);
        }catch (IndexOutOfBoundsException e) {
            System.out.println("越界异常");
        }catch (InputMismatchException e) {
            System.out.println("数据格式不对");
        } catch (ArithmeticException e) {
            System.out.println("算术异常");
        }
    }
}

 */

        int[] a = new int[2];
        Scanner scanner = new Scanner(System.in);
        try {
            int i = scanner.nextInt();
            int j = scanner.nextInt();
            a[0] = i;
            a[1] = j;
            System.out.println(a[0] / a[1]);
        } catch (IndexOutOfBoundsException | InputMismatchException | ArithmeticException e) {
            System.out.println("其中的一个错误");
        }
    }
}

3

public static void main(String[] args) throws Exception {
  /* try {
        setSex("afaqfae");
    }catch (Exception e) {
        System.out.println("上级处理下级抛出的异常");
    }*/
    setSex("sfwf");

}
public static  void setSex (String sex) throws  Exception {   // 声明要抛出异常
    if ( ! ( sex.equals("男") || sex.equals("女"))) {
        System.out.println("发现了异常情况，无法处理，交给上级处理");
        throw new Exception("发现了异常情况，无法处理，交给上级处理"); // 抛出异常 本级函数不处理异常，抛出给调用者
    }
}

4

public class SexException  extends Exception{
    public SexException() {

    }
    public SexException(String message) {
        super(message);
       // System.out.println("自定义的异常处理类，抓到了异常，暂时不处理");
    }
}

5

public static void main(String[] args) throws Exception {
   try {
        setSex("afaqfae");
    }catch (Exception e) {
        System.out.println("上级处理下级抛出的异常");
    }


}
public static  void setSex (String sex) throws  Exception {   // 声明要抛出异常
    if ( ! ( sex.equals("男") || sex.equals("女"))) {
       //  System.out.println("发现了异常情况，无法处理，交给上级处理");
        throw new Exception("发现了异常情况，无法处理，交给上级处理"); // 抛出异常 本级函数不处理异常，抛出给调用者
    }
}