why is it keep outputing "Please enter YOUR AGE again !"?

Question

System.out.println("Please enter your age.");
int x = 1;
do{
try{
int age = info.nextInt();
if (age < 0 || age >130){
System.out.println("");
System.out.println("Please enter YOUR AGE again.");
}else{
x = 2;
}
}catch(Exception e){
System.out.println("");
System.out.println("Please enter YOUR AGE again !");
}
}while(x == 1);

my original purpose is get others' ages.
i am wondering why i type "hfbasjbjsbk",it will keep outputing "Please enter YOUR AGE again !"
shouldn't it ask me to enter a age again?

Answer 1

What are you hoping it will print out? But the main reason is because it isn't an integer, it will go to the catch which will print it out again. Long story short, it can't translate a string to an integer. Hope this helps.

Answer 2

sorry,Gordie and Ryan Wakefield. i dont expect this kind of thing to happen.please accept my apology

Answer 3

yeah, I have that autocorrect with voice to text running. guess I really should have read that statement over again. lol

And I agree, the code in general does need rework as the logic is not sound. I would suggest going back and doing sudo code. this is always a good place to go when having issues.

Answer 4

thank you,@Ryan [e-mail] me rearrange my code again.thanks for giving me an important lesson and practial advice.

Answer 5

you are more than welcome. as I said, don't hesitate to go back to sudo code. it might help more than you realize to do the logic cleaner. :)

Answer 6

let me explain again,
first ,i enter a string ,and it will go to catch.
when it has run through the code of catch,shouldnt it go back to do,try,and then ask me to enter another value of age?

Answer 7

So just to verify, after you enter the string, does the program exit or does it infinitely loop asking for the age?

Answer 8

so,Jordie,can you explain why it will loop

Answer 9

if you remove out of the catch block, then it won't get the try the first time through. Let me think on this as to a suggestion on rework.

Answer 10

sorry, meant thd try block. if you remove it out of the try block. so in other words, it will print out the request for an age, then it will hit the tribe Loch and never try to read in the line and jump to the catch and then print out the request again and then get the inputted information. Basically, you are doubling up on the first request for an age. This will only happen when you first run the program.