System commonly used standard exception class Java

Topic details:

Common exception classes are NumberFormatException, IndexOutOfBoundsException, ArithmeticException, etc. This program creates a Test_Exception class with a test method to detect the occurrence of the above exception objects and output corresponding information. For example, if a NumberFormatException occurs, "data format exception" is output; when an IndexOutOfBoundsException occurs, "out of bounds exception" is output; when an ArithmeticException occurs, "arithmetic operation exception" is output. ##. # Test_Exception class definition:

class Test_Exception{
    void test() {
        int n = 0,m = 0,t = 1000;
        int[] a=new int[4];
        int[] b=null;
        Scanner sc=new Scanner(System.in);
        String str=sc.nextLine();
        try {
                    m = Integer.parseInt(str);
                    t=t/m;
                    a[m]=m;
                    b[0]=m;
        }
        //catch部分需要你们自己填写
        catch(...){...}
        catch(...){...}
        catch(...){...}
        catch(Exception e) {
          System.out.println("Exception:"+e.getMessage()); 
         }  //先catch子类Exception,后catch父类
}
}

The first three catches need to be written by you, the corresponding exception occurs, and the corresponding information is output.

Example of the referee test procedure:

在这里给出函数被调用进行测试的例子。例如:
import java.util.Scanner;

public class Main{

    public static void main(String[] args) {
        Test_Exception te=new Test_Exception();
        te.test();
    }
}
/* 请在这里编写完整 Test_Exception类 */

Input sample:

0

no blank line at the end

Sample output:

算术运算异常

Answer code: 



class Test_Exception
{
    void test() 
    {
        int n = 0,m = 0,t = 1000;
        int[] a=new int[4];
        int[] b=null;
        Scanner sc=new Scanner(System.in);
        String str=sc.nextLine();
        try 
        {
            m = Integer.parseInt(str);
            t=t/m;
            a[m]=m;
            b[0]=m;
        }
        //catch部分需要你们自己填写
        catch(NumberFormatException e){
            System.out.println("数据格式异常");
        }
		catch(IndexOutOfBoundsException e){
            System.out.println("越界异常");
        }
		catch(ArithmeticException e){
            System.out.println("算术运算异常");
        }
		catch(Exception e) {
            System.out.println("Exception:"+e.getMessage());
        }  //先catch子类Exception,后catch父类
    }
}

 

Guess you like

Origin blog.csdn.net/qq_54587141/article/details/120744393