JAVA Exception Handling

Import Java.io.BufferedReader;

Import java.io.IOException;

Import Java.io.InputStreamReader;

Class Geshiexception extends exception{

Public Geshiexception (String a) {

Super (a);

}

}

public class Score {

public static void Main (string[] args) throws ioexception{

BufferedReader cin=new BufferedReader (New InputStreamReader (system.in)); // input function

System.out.println (" Please enter your score:");

String Str=cin.readline ();

int t=0;

Double A;

while (true) { //until the input result is formatted correctly before stopping

try{ // monitor the program that is prone to problems

for (int i=0;i<str.length (); i++)

{

if (Str.charat (i) > ' 9 ' | | Str.charat (i) < ' 0 ')

{

throw new Geshiexception (" Malformed! ");

}

}

A=double.parsedouble (str); To turn a string type to a double type

if (a>100)

throw new Geshiexception (" Malformed! Value ");

Break

}

catch (Geshiexception e) { // exception handling

System.out.println (e);

System.out.println (" please re-enter the score:");

Str=cin.readline ();

}

}

if (a>=90)

System.out.println (" excellent ");

else if (a<90&&a>=80)

System.out.println (" Liang ");

else if (a<80&&a>70)

System.out.println (" medium ");

else if (a<70&&a>60)

System.out.println (" pass ");

else if (a<60)

System.out.println (" less than lattice ");

}

}

Run

JAVA Exception Handling