original questions 1Z0-803 Oracle cert24

original questions 1Z0-803 Oracle cert24

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original questions 1Z0-803 Oracle cert24

QUESTION NO: 1
Given:
class Overloading {
int x(double d) {
System.out.println(“one”);
return 0;
}
String x(double d) {
System.out.println(“two”);
return null;
}
double x(double d) {
System.out.println(“three”);
return 0.0;
}
public static void main(String[] args) {
new Overloading().x(4.0)
}
}
What is the result?

A. One
B. Two
C. Three
D. Compilation fails

Answer: D

Explanation: overloading of the x method fails as the input argument in all three cases are
double.
To use overloading of methods the argument types must be different.
Note: The Java programming language supports overloading methods, and Java can distinguish between methods with different method signatures. This means that methods within a class can have the same name if they have different parameter lists

QUESTION NO: 2
The catch clause argument is always of type___________.

A. Exception
B. Exception but NOT including RuntimeException
C. Throwable
D. RuntimeException
E. CheckedException
F. Error

Answer: C

original questions 1Z0-803 Oracle cert24