[Q63-Q87] Attested 1z0-808 Dumps PDF Resource [2023]

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Attested 1z0-808 Dumps PDF Resource [2023]

Latest 1z0-808 Actual Free Exam Questions Updated 225 Questions

The Oracle 1z1-808 (Java SE 8 Programmer I) Exam is a certification exam designed for individuals seeking to validate their skills and knowledge in Java programming language. This exam is intended for professionals who have a minimum of 1 year of experience in Java programming and are familiar with the fundamentals of object-oriented programming, including classes, inheritance, interfaces, and polymorphism. The exam covers a wide range of topics, including Java basics, variable scope, operators, flow control, and exception handling.

The exam is intended for individuals who have a basic understanding of programming concepts and have experience with programming in Java. It is ideal for those who want to demonstrate their proficiency in Java SE 8 programming and gain a recognized certification that can help them advance their career. The certification is recognized worldwide and is highly valued by employers in the IT industry.

NEW QUESTION 63
Given the definitions of the MyString class and the Test class:

What is the result?

Option A

Option B

Option C

Option D

NEW QUESTION 64
Given the code fragment:

What is the result?

[Robb, Rick, Bran]

[Robb, Rick]

[Robb, Bran, Rick, Bran]

An exception is thrown at runtime.

NEW QUESTION 65
Given:

What is the result?

int main 1

Object main 1

String main 1

Compilation fails

An exception is thrown at runtime

NEW QUESTION 66
Given:

What is the result?

True false

True null

Compilation fails

A NullPointerException is thrown at runtime

NEW QUESTION 67
Given the code fragments:

What is the result?

Compilation fails only at line n1.

Compilation fails only at line n2.
Tool::export

Tool::export

Compilation fails at both line n1 and line2.
RTool::export

Tool::export

Explanation/Reference:

NEW QUESTION 68
Which statement is true about Java byte code?

It can run on any platform.

It can run on any platform only if it was compiled for that platform.

It can run on any platform that has the Java Runtime Environment.

It can run on any platform that has a Java compiler.

It can run on any platform only if that platform has both the Java Runtime Environment and a Java compiler.

Explanation
Java bytecodes help make “write once, run anywhere” possible. You can compile your program into bytecodes on any platform that has a Java compiler. The bytecodes can then be run on any implementation of the Java VM. That means that as long as a computer has a Java VM, the same program written in the Java programming language can run on Windows 2000, a Solaris workstation, or on an iMac.
References:

NEW QUESTION 69
Given the code fragment:

Which two modifications, when made independently, enable the code to print joe:true: 100.0?

Option A

Option B

Option C

Option D

Option E

NEW QUESTION 70
Given the code fragment:

What is the result?

Element 0Element 1

Null element 0Null element 1

NullNull

A NullPointerException is thrown at runtime.

NEW QUESTION 71
Given:

What is the result?

97 9899 100 null null null

97 9899 100 101 102 103

Compilation fails.

A NullPointerException is thrown at runtime.

An ArraylndexOutOfBoundsException is thrown at runtime.

NEW QUESTION 72
Given the following class:

And given the following main method, located in another class:

Which three lines, when inserted independently at line n1, cause the program to print a 0 balance?

this.amount = 0;

amount = 0;

acct (0) ;

acct.amount = 0;

acct. getAmount () = 0;

acct.changeAmount(0);

acct.changeAmount(-acct.amount);

acct.changeAmount(-acct.getAmount());

NEW QUESTION 73
Given the code from the Greeting.Java file:

Which set of commands prints Hello Duke in the console?

Option A

Option B

Option C

Option D

NEW QUESTION 74
Given the code fragment:

What is the result?

Compilation fails.

0 Found

1 Found

3 Found

NEW QUESTION 75
Given the code fragment:

What is the result?

10 : 10

5 : 5

5 : 10

Compilation fails

NEW QUESTION 76
Given:

What is the result?

120

120D

A NumberFormatException will be thrown.

Compilation fails due to error at line 5.

Compilation tails due to error at line 8.

At line 5, we have created a wrapper object of double by passing 120D, which is convertible to a Double, so there won’t be any exception there. But if you check carefully, you can see the variable number is declared inside try block, so the scope of the variable number is limited to that block, so trying to access it outside causes a compile time error. httpsy/docs.oracle.com/javase/tutorial/iava/nutsandbolts/variables.html

NEW QUESTION 77
Given the code fragment:

What is the result?

Found Red Found Default

Found Teal

Found Red Found Blue Found Teal

Found Red Found Blue Found Teal Found Default

Found Default

NEW QUESTION 78
Given: What is the output?

[21, 13, 11]

[30]

[]

Compilation fails due to error at line 7

Compilation tails due to error at line 10

Option D is the correct answer. Code fails to compile as we can’t use primitive for collections type, so in this code trying to use int at line 7, causes a compile error. We should have use wrapper. Integer there. So option D is correct. https://docs.oracle.eom/javase/8/docs/api/java/util/ArrayList.html

NEW QUESTION 79
Given:

What is the result?

BaseDerivedA

BaseDerivedB

DerivedBDerivedB

DerivedBDerivedA

A ClassCastException is thrown at runtime.

NEW QUESTION 80
You are developing a banking module. You have developed a class named ccMask that has a maskcc method.
Given the code fragment:

You must ensure that the maskcc method returns a string that hides all digits of the credit card number except the four last digits (and the hyphens that separate each group of four digits).
Which two code fragments should you use at line n1, independently, to achieve this requirement? (Choose two.)

Option A

Option B

Option C

Option D

NEW QUESTION 81
Given:

What is the result?

BaseDerivedA

BaseDerivedB

DerivedBDerivedB

DerivedBDerivedA

A classcast Exception is thrown at runtime.

NEW QUESTION 82
Given:

Which code fragment can replace the if block?

stuff.equals (“TV”) ? res= “Walter” : stuff.equals (“Movie”) ? res = “White” : res = “No Result”;

res = stuff.equals (“TV”) ? “Walter” else stuff.equals (“Movie”)? “White” : “No Result”;

res = stuff.equals (“TV”) ? stuff.equals (“Movie”)? “Walter” : “White” : “No Result”;

res = stuff.equals (“TV”)? “Walter” : stuff.equals (“Movie”)? “White” : “No Result”;

NEW QUESTION 83
Which two will compile, and can be run successfully using the command: Java fred1 hello walls

Option A

Option B

Option C

Option D

Throws java.lang.ArrayIndexOutOfBoundsException: 2 at certquestions.Fred1.main(Fred1.java:3)
C. Prints out: [Ljava.lang.String;@39341183
D. Prints out: walls

NEW QUESTION 84
Given:

What is the result?

Option A

Option B

Option C

Option D

NEW QUESTION 85
Given:

What is the result?

false, false

false, true

true, false

true, true

NEW QUESTION 86
Given:

What is the result?

9 5

81 25

Compilation fails.

0 0

Explanation/Reference:
Explanation:

NEW QUESTION 87
Given the code fragment:
System.out.printIn (“Result: ” +3+5);
System.out.printIn (“Result: ” + (3+5));
What is the result?

Result: 8 Result: 8

Result: 35 Result: 8

Result: 8 Result: 35

Result: 35 Result: 35

In the first statement 3 and 5 are treated as strings and are simply concatenated. In the first statement 3 and 5 are treated as integers and their sum is calculated.

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