[Sep 30, 2021] Get Free Updates Up to 365 days On Developing 1z0-808 Braindumps [Q84-Q100]

[Sep 30, 2021] Get Free Updates Up to 365 days On Developing 1z0-808 Braindumps

Best Quality Oracle 1z0-808 Exam Questions

NEW QUESTION 84
Given:

What is the result?

A. Option D
B. Option B
C. Option A
D. Option C

Answer: B

NEW QUESTION 85
Given:

And given the commands:

What is the result?

A. Java EE
B. Compilation fails at line n1.
C. A NullPointerException is thrown at runtime.
D. Java SE

Answer: A

NEW QUESTION 86
Given the code fragment:

What is the result?

A. 0
B. 1
C. 2
D. 3
E. Compilation fails

Answer: E

NEW QUESTION 87
Given:
public class Main {
public static void main(String[] args) {
try {
doSomething();
}
catch (SpecialException e) {
System.out.println(e);
}}
static void doSomething() {
int [] ages = new int[4];
ages[4] = 17;
doSomethingElse();
}
static void doSomethingElse() {
throw new SpecialException("Thrown at end of doSomething() method"); }
}
What is the output?

A. SpecialException: Thrown at end of doSomething() method at
Main.doSomethingElse(Main.java:16)
at Main.doSomething(Main.java:13)
at Main.main(Main.java:4)
B. SpecialException: Thrown at end of doSomething() method
C. Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 4
at Main.doSomething(Main.java:12)
at Main.main(Main.java:4)
D. Error in thread "main" java.lang.
ArrayIndexOutOfBoundseror

Answer: C

Explanation:
The following line causes a runtime exception (as the index is out of bounds): ages[4] = 17;
A runtime exception is thrown as an ArrayIndexOutOfBoundsException.
Note: The third kind of exception (compared to checked exceptions and errors) is the runtime exception. These are exceptional conditions that are internal to the application, and that the application usually cannot anticipate or recover from. These usually indicate programming bugs, such as logic errors or improper use of an API. Runtime exceptions are not subject to the Catch or Specify Requirement. Runtime exceptions are those indicated by RuntimeException and its subclasses.

NEW QUESTION 88
Which two class definitions fail to compile?

A. final class A1 {public A1(){}}
B. abstract class A3 {private static int i;public void doStuff(){}public A3(){}}
C. public class A2 {private static int i;private A2(){}}
D. class A4 {protected static final int i;private void doStuff(){}}
E. final abstract class A5 {protected static int i;void doStuff(){}abstract void doIt();}

Answer: C,E

NEW QUESTION 89
Given:

What is the result?

A. Compilation fails.
B. 400.0 : 100.0
C. 200.0 : 100.0
D. 400.0 : 200.0

Answer: B

NEW QUESTION 90
Which two statements correctly describe checked exception?

A. These are exceptional conditions that a well-written application should anticipate and recover from.
B. Every class that is a subclass of RuntimeException and Error is categorized as checked exception.
C. These are exceptional conditions that are internal to the application, and that the application usually cannot anticipate or recover from.
D. These are exceptional conditions that are external to the application, and that the application usually cannot anticipate or recover from.
E. Every class that is a subclass of Exception, excluding RuntimeException and its subclasses, is categorized as checked exception.

Answer: B,D

Explanation:
Checked exceptions:
*(B) represent invalid conditions in areas outside the immediate control of the program (invalid user input, database problems, network outages, absent files)
*are subclasses of Exception It's somewhat confusing, but note as well that RuntimeException (unchecked) is itself a subclass of Exception (checked).
*a method is obliged to establish a policy for all checked exceptions thrown by its implementation (either pass the checked exception further up the stack, or handle it somehow)
Reference: Checked versus unchecked exceptions

NEW QUESTION 91
Given the code fragment:

What is the result?

A. A B C Work done
B. A Work done
C. A B C D Work done
D. Compilation fails

Answer: B

NEW QUESTION 92
Given:

What is the result?

A. A B C C
B. A B D
C. A B C D
D. A B D C
E. A C D

Answer: D

NEW QUESTION 93
Which usage represents a valid way of compiling java source file with the name "Main"?

A. javac Main.java
B. java Main.class
C. javac Main
D. java Main.java
E. java Main

Answer: A

Explanation:
The compiler is invoked by the javac command. When compiling a Java class, you must include the file name, which houses the main classes including the Java extension. So to run Main.java file we have to use command in option A.
TO execute Java program we can use Java command but can't use it for compiling.
https://docs.oracle.com/javase/tutorial/getStarted/application/index.html

NEW QUESTION 94
Given the code fragment:

What is the result?