atwork2003
asked on
Try/Catch block value accessible
Hi
I have a try/catch block to open a file and get values from it. I try to put an if statement and return False/True on some condition in if statement. When I end the block the method is showing error because I placed the return value statement in incorrect place, that is if statement should be outside try block but then it wont get the values from the try/catch block or would that be ok (confusing..... but the code is below:)
----
CODE
try {
// Open and read the Feature.properties
Properties props = new Properties();
props.load( fis= new FileInputStream (new File ("Feature.properties")) );
if ("Medium".equals(props.get
return (bcs.getFeatureId()); // will return true or false
} else {
return txtValue; //value is set to false
}
} catch (IOException e){
e.printStackTrace();
}
-----
This method needs to return a boolean value. Right now because the if is inside try block therefors its not getting the return value, but if I place if outside the try block then it may not get value of "prop". I can not test this class as individual right now, thats why I need help to get the code right::)))
Thank you:-)
I have a try/catch block to open a file and get values from it. I try to put an if statement and return False/True on some condition in if statement. When I end the block the method is showing error because I placed the return value statement in incorrect place, that is if statement should be outside try block but then it wont get the values from the try/catch block or would that be ok (confusing..... but the code is below:)
----
CODE
try {
// Open and read the Feature.properties
Properties props = new Properties();
props.load( fis= new FileInputStream (new File ("Feature.properties")) );
if ("Medium".equals(props.get
return (bcs.getFeatureId()); // will return true or false
} else {
return txtValue; //value is set to false
}
} catch (IOException e){
e.printStackTrace();
}
-----
This method needs to return a boolean value. Right now because the if is inside try block therefors its not getting the return value, but if I place if outside the try block then it may not get value of "prop". I can not test this class as individual right now, thats why I need help to get the code right::)))
Thank you:-)
ASKER CERTIFIED SOLUTION
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try returning false at the end of try/catch block:
try {
...
} catch() {
}
return false;
try {
...
} catch() {
}
return false;
ASKER
Question: That would work but wouldnt it override the return from try/catch and always return false. Thank you:)
no - as we are returning in from the try block, the outer return will be executed only when there is IOException.
>>
else {
return txtValue; //value is set to false
}
>>
isn't that an odd name for a boolean?
else {
return txtValue; //value is set to false
}
>>
isn't that an odd name for a boolean?
ASKER
Great:) One last thing that return statement that you gave, would it return true/false if the values are not equal, right?
>>return "Medium".equals(props.getP
>>return "Medium".equals(props.getP
You must keep the reference to the InputStream and make sure it's closed or you could get memory leaks
this statement returns true if the property "Strength" has "Medium" value
You could increase the robustness (unless you've a reason not to) with
return "Medium".equalsIgnoreCase(
return "Medium".equalsIgnoreCase(
ASKER
Thanks a bunch every one. CEHJ thank you. Thanks Ajay for your patience and great solution:)
ASKER
I am still getting error that no return value is provided. Maybe because the return value within try/catch block is not considered as return value for the method. Any help:)