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1z0-811 Certification Sample Questions certification Exam
Oracle 1z0-811 exam is a comprehensive exam that covers a wide range of topics related to Java programming. 1z0-811 exam tests the candidate's knowledge in areas such as Java syntax, data types, control structures, object-oriented programming, and exception handling. 1z0-811 exam is also designed to test the candidate's ability to write efficient and effective code, and their understanding of key concepts such as inheritance, polymorphism, and encapsulation.
NEW QUESTION # 40
Given the code fragment:
What is the result?
- A. An ArrayIndexOutofBoundsException is thrown at run time.
- B. Selected Chocolate flavor.
- C. Selected Chocolate flavor.
- D. Selected null flavor.
Answer: A
NEW QUESTION # 41
Given the code fragment:
What is the result?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION # 42
Given the code:
Which code fragment, when inserted at line n1, enables the code to print sum is 30?
- A. int sum(int a, b) {
- B. int sum(int a, int b) {
- C. int sum(int[] a, b) {
- D. int sum(int, int) {
Answer: C
NEW QUESTION # 43
Given the code fragment:
What is the result?
- A. Jack
- B. The program prints either Jack or Queen.
- C. A compilation error occurs at line n1.
- D. Queen
Answer: C
NEW QUESTION # 44
Given:
At which line does a compilation error occur?
- A. line 7
- B. line 2
- C. line 3
- D. line 5
Answer: B
NEW QUESTION # 45
Given the code fragment:
Which code fragment, when inserted at line n1, enables the code to print Java Programming:1?
- A. System.out.println(c.name + ":" + count);
- B. System.out.println(name + ":" + count);
- C. System.out.println(c.name + ":" + Course.count);
- D. System.out.println(Course.name + ":" + c.count);
Answer: C
NEW QUESTION # 46
Which two statements are true about the Java Runtime Environment (JRE)?
- A. It interprets bytecode stored in a .class file.
- B. You must install the JRE to compile a .java file.
- C. It is responsible for garbage collection.
- D. It is platform independent.
- E. It contains the JDK and Java APIs.
Answer: A,D
NEW QUESTION # 47
Given the code fragment:
What is the output?
- A. 0
- B. 1
- C. 2
- D. A compilation error occurs.
Answer: A
NEW QUESTION # 48
Identify two class variables.
- A. public static int counter = 0;
- B. int scale = 35;
- C. private static int numberOfSquares = 20;
- D. private Measure cm;
- E. public int size = 10;
Answer: A,C
NEW QUESTION # 49
Given:
What is the output?
- A. 1 2 aaa
- B. Compilation fails
- C. 1 2 3 aaaa
- D. a
Answer: D
NEW QUESTION # 50
Identify three advantages of object-oriented programming.
- A. information hiding
- B. information sharing
- C. modularity
- D. code reuse
- E. separation of state and behavior
Answer: A,C,D
NEW QUESTION # 51
Given:
What is the result?
- A. 0
- B. A compilation error occurs in the main method.
- C. 1
- D. A compilation error occurs in the modify method.
Answer: B
NEW QUESTION # 52
Given the contents of Student.java:
Which statement is true?
- A. The commands:
javac Student.java
java Student "Richard William" Java
are used to print Richard William is studying Java. - B. The commands:
javac Student.java
java Student Richard William Java
are used to print Richard William is studying Java. - C. The commands:
javac Student.java
java Student Richard William Java
throw an error about a missing Course.class file. - D. The commands:
javac Course.java
javac Student.java
java Course
java Student "Richard William" Java
are used to print Richard William is studying Java.
Answer: C
NEW QUESTION # 53
What does import java.io* mean?
- A. All classes in the io package and the subpackages of io packages, if any, are imported.
- B. All classes in the io package are imported.
- C. All classes whose names start with io are imported.
- D. Only the io class is imported.
Answer: A
NEW QUESTION # 54
Given:
What is the result?
- A. Iteration plus an increasing number is printed 99 times.
- B. The program compiles and nothing is printed.
- C. An error occurs during compilation.
- D. Iteration plus an increasing number is printed 100 times.
Answer: C
NEW QUESTION # 55
Given the code fragment:
What is the result?
- A. 0
- B. 1
- C. 2
- D. A compilation error occurs.
Answer: C
NEW QUESTION # 56
What is the meaning of "write once, run anywhere" in Java?
- A. Java programs, after being compiled, can run on any platform or device even without a Java Virtual Machine.
- B. Java programs can run on any Java Virtual Machine without being recompiled.
- C. It is a marketing statement because Java programs must be compiled for a specific platform in order to run.
- D. Java programs are designed to run only in web browsers and, thus, can run wherever there is a browser.
Answer: B
NEW QUESTION # 57
Which package would you import to use the Random class?
- A. java.util
- B. java.lang
- C. java.io
- D. java.math
Answer: A
NEW QUESTION # 58
Given the code fragment:
What is the result?
- A. true false 0
- B. true true 0
- C. false false -1
- D. false true -1
Answer: A
NEW QUESTION # 59
Given the code fragment:
What is the result?
- A. A compilation error occurs.
- B. A runtime exception is thrown.
- C. 10 20
10 20 - D. 10 20
10 15 20
Answer: A
NEW QUESTION # 60
Which statement is true about primitive variables?
- A. They cannot be compared.
- B. They can be compared with the compareTo method only.
- C. They can be compared with the == operator.
- D. They can be compared with the equals method only.
Answer: D
NEW QUESTION # 61
Which two Java reserved words are used to implement encapsulation?
- A. final
- B. static
- C. extends
- D. private
- E. public
Answer: D,E
NEW QUESTION # 62
You have a microprocessor board, such as Raspberry PI, wired to control a drone.
Which edition of Java is geared towards use of simple, closed systems with constrained memory requirements, such as a microprocessor board?
- A. Java Micro Edition
- B. Java SE Embedded
- C. Java Standard Edition with a Compact Profile
- D. Java Enterprise Edition
Answer: B
NEW QUESTION # 63
Which statement is true about a Java method?
- A. It cannot be defined as static final.
- B. It must be declared with an access modifier.
- C. It cannot be defined within another method.
- D. It must accept a parameter and return a value.
Answer: C
NEW QUESTION # 64
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