12-08-2008, 01:01 PM
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Exception handling
hi all,i have written a code which shows exception when the age is less than 18 or greater than 22,its working perfectly.But now i want to enter the age during runtime,will someone change the code and give me.Thank u!
Java Code:
class userException extends Exception
{
int age;
userException(int age)
{
age=age;
}
public String toString()
{
return"UserException caught:invalid age";
}}
class userExceptionDemo
{
static void calculate(int age) throws userException
{
if(age<18||age>22)
throw new userException(age);
System.out.println("valid age");
}
public static void main(String args[])
{
try
{
calculate(20);
calculate(34);
}
catch(userException obja)
{
System.out.println("caught:"+obja);
}
}
}
Last edited by JavaPF; 12-08-2008 at 06:17 PM. Reason: added [code] [/code] tags 
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13-08-2008, 01:44 PM
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Re: Exception handling
Hello AnithaBabu1.
Welcome to the Java Programming Forums! Try this: Java Code:
class userException extends Exception
{
int age;
userException(int age)
{
age=age;
}
public String toString()
{
return"UserException caught:invalid age";
}}
class userExceptionDemo
{
static void calculate(int age) throws userException
{
if(age<18||age>22)
throw new userException(age);
System.out.println("valid age");
}
public static void main(String args[])
{
System.out.println("Enter age: ");
InputStreamReader isr = new InputStreamReader(System.in);
BufferedReader br = new BufferedReader(isr);
String s = br.readLine();
int age = Integer.parseInt(s);
try
{
calculate(age);
calculate(age);
}
catch(userException obja)
{
System.out.println("caught:"+obja);
}
}
}
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16-08-2008, 04:32 AM
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Re: Exception handling
Thank u!but it's showing certain error like can't find symbol for those streams.I tried to do certain changes but i didn't get the o/p.I am new to java.
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16-08-2008, 06:02 AM
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Re: Exception handling
Sorry,i didn't import io exception package thats y i got the error,but now iam getting different error at br.readLine() method showing "unreported exception java.io.IOException:must be caught or declared to be thrown",will u plz point out whatz the problem is?I have highlighted the particular line which shows error with red colour.Thank u!
Java Code:
class userException extends Exception
{
int age;
userException(int age)
{
age=age;
}
public String toString()
{
return"UserException caught:invalid age";
}}
class userExceptionDemo
{
static void calculate(int age) throws userException
{
if(age<18||age>22)
throw new userException(age);
System.out.println("valid age");
}
public static void main(String args[])
{
System.out.println("Enter age: ");
InputStreamReader isr = new InputStreamReader(System.in);
BufferedReader br = new BufferedReader(isr);
String s = br.readLine();
int age = Integer.parseInt(s);
try
{
calculate(age);
calculate(age);
}
catch(userException obja)
{
System.out.println("caught:"+obja);
}
}
}
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18-08-2008, 02:26 PM
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Re: Exception handling
Try putting this part of the code into a try catch block..
Java Code:
System.out.println("Enter age: ");
InputStreamReader isr = new InputStreamReader(System.in);
BufferedReader br = new BufferedReader(isr);
String s = br.readLine();
int age = Integer.parseInt(s);
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26-08-2008, 06:01 AM
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Re: Exception handling
Thank a lot PF,it works.I tried to mark it solved,in my original post using edit button,but i didn't see any drop down box with the label solved near my title!any have thank u so much..........!!!!
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27-08-2008, 02:37 PM
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Re: Exception handling
Quote:
Yeah there seems to be a problem with people marking threads as solved. I'm looking into it now.
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