java - Javac doesn't complain on not-catching exception (Runtime Exception) -


i have in class:

/* parses value out of string */ public static int parsevalue(final string text) throws numberformatexception {      string cleanedvalue = text.replace("-", "").replace(",", ".");     return math.round(float.parsefloat(cleanedvalue) * 100); }

for reason javac doesn't complain don't catch numberformatexception in calling code.

can tell me why is?

from java docs, numberformatexception is,

thrown indicate application has attempted convert string 1 of numeric types, string not have appropriate format.

just @ inheritance structure, numberformatexception derives runtimeexception, compiler doesn't force catch exceptions. it's not recommended. need catch/declare checked exceptions.

java.lang.object      java.lang.throwable         java.lang.exception           java.lang.runtimeexception               java.lang.illegalargumentexception                   java.lang.numberformatexception

now, method is not required declare in throws clause subclasses of runtimeexception might thrown during execution of method not caught.


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