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1Z0-808 exam Oracle

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Java SE 8 Programmer I Certification Exam | 1Z0-808 | Oracle University: https://education.oracle.com/java-se-8-programmer-i/pexam_1Z0-808

Oracle Certified Associate, Java SE 8 Programmer Certification Overview

  • Create command-line Java applications
  • Understand and apply Object-Oriented concepts such as Encapsulation, Inheritance and Polymorphism
  • Use java types
  • Create conditional statements and loops
  • Manipulate Arrays and Collections
  • Handle Exceptions
  • Take advantage of new Java SE 8 features, such as Lambda expressions and Date/Time API

Oracle Database Certifications: https://education.oracle.com/database/oracle-database/pFamily_32?certPage=true

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Latest effective Oracle 1z0-808 Exam Practice Tests

QUESTION 1

Which usage represents a valid way of compiling java source file with the name “Main”? 

A. javac Main.java 

B. java Main.class 

C. java Main.java 

D. javac Main 

E. java Main 

Correct 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 

QUESTION 2

Given:

pass4itsure 1z0-808 exam question q2

What is the result?
A. 3 4 5 6
B. 3 4 3 6
C. 5 4 5 6
D. 3 6 4 6
Correct Answer: C

QUESTION 3
Given:pass4itsure 1z0-808 exam question q3What is the result?
A. 2 4 6 8 10 12
B. 2 4 6 8 10 12 14
C. Compilation fails
D. The program prints multiple of 2 infinite times
E. The program prints nothing
Correct Answer: B

QUESTION 4
Given the code fragment from three files:pass4itsure 1z0-808 exam question q4

Which code fragment, when inserted at line 2, enables the code to compile? pass4itsure 1z0-808 exam question q4-1

A. Option A
B. Option B
C. Option C
D. Option D
E. Option E
Correct Answer: E

QUESTION 5
Given:
public class Test {
public static void main(String[] args) {
int ax = 10, az = 30;
int aw = 1, ay = 1;
try {
aw = ax % 2;
ay = az / aw;
} catch (ArithmeticException e1) {
System.out.println(“Invalid Divisor”);
} catch (Exception e2) {
aw = 1;
System.out.println(“Divisor Changed”);
}
ay = az /aw; // Line 14
System.out.println(“Succesful Division ” + ay);
}
}
What is the result?
A. Invalid Divisor Divisor Changed Successful Division 30
B. Invalid Divisor Successful Division 30
C. Invalid Divisor Exception in thread “main” java.lang.ArithmeticException: / by zero at
test.Teagle.main(Teagle.java:14)
D. Invalid Divisor Exception in thread “main” java.lang.ArithmeticException: / by zero at
test.Teagle.main(Teagle.java:14) Successful Division 1
Correct Answer: C

QUESTION 6
Given:
class Base {
// insert code here
}
public class Derived extends Base{
public static void main(String[] args) {
Derived obj = new Derived();
obj.setNum(3);
System.out.println(“Square = ” + obj.getNum() * obj.getNum());
}
}
Which two options, when inserted independently inside class Base, ensure that the class is being properly encapsulated
and allow the program to execute and print the square of the number?
A. private int num; public int getNum() { return num; }public void setNum(int num) { this.num = num;}
B. public int num; protected public int getNum() { return num; }protected public void setNum(int num) { this.num = num;}
C. private int num;public int getNum() {return num;} private void setNum(int num) { this.num = num;}
D. protected int num; public int getNum() { return num; } public void setNum(int num) { this.num = num;}
E. protected int num; private int getNum() { return num; } public void setNum(int num) { this.num = num;}
Correct Answer: AD
Incorrect:
Not B: illegal combination of modifiers: protected and public not C: setNum method cannot be private.
not E: getNum method cannot be private.

QUESTION 7
Given the code fragment: List colors = new ArrayList(); colors.add(“green”); colors.add(“red”); colors.add(“blue”);
colors.add(“yellow”); colors.remove(2); colors.add(3,”cyan”); System.out.print(colors); What is the result?
A. [green, red, yellow, cyan]
B. [green, blue, yellow, cyan]
C. [green, red, cyan, yellow]
D. Am IndexOutOfBoundsException is thrown at runtime
Correct Answer: A
Explanation: First the list [green, red, blue, yellow] is build.
The blue element is removed:
[green, red, yellow]
Finally the element cyan is added at then end of the list (index 3).
[green, red, yellow, cyan]

QUESTION 8
Given:pass4itsure 1z0-808 exam question q8What is the result?
A. 200.0 : 100.0
B. 400.0 : 200.0
C. 400.0 : 100.0
D. Compilation fails.
Correct Answer: C

QUESTION 9
Given:
public class String1 {
public static void main(String[] args) {
String s = “123”;
if (s.length() >2)
A. concat(“456”); for(int x = 0; x e%2 != 0);
B. list.removelf(e -> e%2 != 0);
C. Ust.removelf(e -> e%2 = 0);
D. list.remove(e -> e%2 = 0);
E. None of the above.
Correct Answer: C
In output we can see that only odd numbers present, so we need to remove only even numbers to get expected output.
From Java SE 8, there is new method call removelf which takes predicate object and remove elements which satisfies
predicate condition. Predicate has functional method call take object and check if the given condition met or not, if met it
returns true, otherwise false. Option C we have passed correct lambda expression to check whether the number is odd
or even that matches to the functional method of predicate interface. Option A is incorrect as it is invalid lambda
expression. Option B is incorrect as it removes all odd numbers. Option D is incorrect as there is no remove method that
takes predicate as argument. https://docs.oracle.eom/javase/8/docs/api/java/util/ArrayList.html

QUESTION 13
Given the code fragment:pass4itsure 1z0-808 exam question q13What is the result if the integer aVar is 9?
A. 10 Hello World!
B. Hello Universe!
C. Hello World!
D. Compilation fails.
Correct Answer: A

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