CODEWITHSUNDEEP
javaruntime-error
Bob 22
Bob 22

Reputation: 5

java-how to handle runtime errors?

I'm writing a java program that adds two numbers with any length(the input is string). it works well but the judge gives me 44 because it has "Runtime Error" what should i do?

Upvotes: 0

Views: 1415

Answers (2)

Arnaud
Arnaud

Reputation: 17524

Replace all your calls to Long.parseLong, by calls to such a method :

private long checkLong(String entry){

long result = 0;
    try  
      {  
        result = Long.parseLong(entry);  
      }  
      catch(NumberFormatException e)  
      {  
        System.out.println("Value " + entry + " is not valid") ; 
        System.exit(1);
      }

    return result;
}

Upvotes: 0

Manish Mallavarapu
Manish Mallavarapu

Reputation: 455

To Answer your question "How to handle runtime-errors",

It is not different from any other exception: 

try {

   someCode(); 

} catch (RuntimeException ex) {
   //handle runtime exception here
}

This judge may have given you a 44 (assuming that is low) because the input that comes to you as strings may not be numbers at all, and if this happens, your program should not crash? That would be my guess

UPDATE: Now that you have some code up, this is most likely the case, what happens if String a is "hello" ? Your program would crash at Long.parseLong(), you need to handle this!

Upvotes: 2

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