1.Write a class with a static method that accepts a string, displays the number

Question

1.Write a class with a static method that accepts a string, displays the number of characters, and throws an

exception if any character in the string is not in the set {'a'..'z', '0'..'9', 'A'..'Z'}. The exception should be

thrown but not caught (i.e., no explicit catch block). Write a client program that calls this method and prints

"Error in Input" if the method throws an exception..      

2.Design a class named Triangle that extends GeometricObject (corresponding to UML shown

below). The class contains:

Explanation / Answer

are you using java or another program?

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