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1Z0-803 Java SE 7 Programmer I
Working with Inheritance
Implement
inheritance
Develop code that demonstrates the use of
polymorphism
Differentiate between the type of a reference and the type of an
object
Determine when casting is necessary
Use super and this to access
objects and constructors
Use abstract classes and
interfaces
Handling Exceptions
Differentiate among checked
exceptions, RuntimeExceptions and Errors
Create a try-catch block and
determine how exceptions alter normal program flow
Describe what exceptions
are used for in Java
Invoke a method that throws an exception
Recognize
common exception classes and categories
Free 1Z0-803 Demo
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An unchecked exception occurs in a method dosomething(). Should
other code be added in the dosomething() method for it to compile and
execute?
A.The Exception must be caught
B.The Exception must be declared
to be thrown.
C.The Exception must be caught or declared to be
thrown.
D.No other code needs to be added.
Answer: D
Given the code fragment:
String valid = “true”;
if (valid)
System.out.println (”valid”);
else system.out.println (”not valid”);
What
is the result?
A.Valid
B.not valid
C.Compilation fails
D.An
IllegalArgumentException is thrown at run time
Answer: C
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