Exceptionn handling in the constructor

Question

The exception handling doesn't seem to be working. This constructor is designed to take numbers (double). When I try to enter a char or a string, the exception handling doesn't work. Does anyone know what I'm doing wrong?
try{
Circle c = new Circle('a', "hello", "what");
catch (Exception e){
System.out.println("invalid");
This is the error message that I get:
Exception in thread "main" java.lang.Error: Unresolved compilation problem:
     The constructor Circle(char, String, String) is undefined
I just want it to print out the String "invalid" on the screen.

Answer 1

837443 wrote:
The exception handling doesn't seem to be working. .. No, it is the code compilation that is not working.
..This constructor is designed to take numbers (double). When I try to enter a char or a string, the exception handling doesn't work. Does anyone know what I'm doing wrong?Please use code tags as described on the 'sticky post' at the top of the forum thread listing.
try{
Circle c = new Circle('a', "hello", "what");
catch (Exception e){
System.out.println("invalid");<li> e.printStackTrace() is shorter and provides much more useful information than the code line above.
<li> Even if calling printlln, it should arguably done using the System.err stream
<li> When catching Exceptions, it is best practice to make them as specific as possible. For example, the constructor for new Circle might be expected to throw a FileNotFoundException occasionally depending on user input, but if it ends up throwing a NullPointerException that you never expected, that would indicate a program logic error.
This is the error message that I get:
Exception in thread "main" java.lang.Error: Unresolved compilation problem:
     The constructor Circle(char, String, String) is undefinedWhat do you think that means? It seems pretty clear to me. See http://java.syntaxerrors.info/index.php?title=Constructor_undefined for more details.
I just want it to print out the String "invalid" on the screen.Do that before/after dumping the stacktrace.