2023年最新ののOracle 1z1-811問題集PDF1z1-811最速合格したいならここ
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質問 # 13
Given the code fragment:
Which code fragment can be inserted at line n1 to enable the code to print 0.0?
- A. Ball b = null;
b.weight = 0.0; - B. Ball b = new Ball();
- C. Ball.weight = 0.0;
- D. Ball b = new Ball(0.0);
正解：B
質問 # 14
Which statement is valid?
- A. int totalScore2 = 0;
- B. int 2 totalScore = 0;
- C. int total score = 0;
- D. int total-score = 0;
正解：B
質問 # 15
Given the code fragment:
Which statement is true?
- A. The code results in a compilation error. To make it compile, insert at line n1:
import java.lang;
import java.util; - B. The code results in a compilation error. To make it compile, insert at line n1:
import java.lang.Math;
import java.lang.Random; - C. The code compiles successfully
- D. The code results in a compilation error. To make it compile, insert at line n1:
import java.util.*;
正解：C
質問 # 16
Given the classes:
Which two modifications, independently, enable the Salad.java file to compile?
- A. Replace line n1 with import fruits;
- B. Replace line n2 with fruits.Apple apple = new Apple ();
- C. Replace line n1 with import fruits.Apple.getApple();
- D. Replace line n1 with import fruits.Apple;
- E. Replace line n2 with fruits.Apple apple = new fruits.Apple ();
正解：B、C
質問 # 17
Given the code
What is the result?
- A. num = 99
- B. num = 100
- C. num = 0
- D. The program executes indefinitely.
正解：A
質問 # 18
Given the code fragment:
What is the result?
- A. true
true - B. false
true - C. true
false - D. false
false
正解：D
質問 # 19
Which package would you import to use the Random class?
- A. java.lang
- B. java.util
- C. java.io
- D. java.math
正解：B
質問 # 20
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 are designed to run only in web browsers and, thus, can run wherever there is a browser.
- C. Java programs can run on any Java Virtual Machine without being recompiled.
- D. It is a marketing statement because Java programs must be compiled for a specific platform in order to run.
正解：C
質問 # 21
Given the code fragment:
Which two code fragments are valid at line 2?
- A. package p1;
- B. private String name = "John";
public void display() {
System.out.print(name);
} - C. import java.util.*;
public void display() {
List<Integer> nums = new ArrayList<> ();
} - D. {
private int num;
} - E. for (int count = 0; count < 5; count++) {
System.out.print(count);
}
正解：A、B
質問 # 22
Which statement is true about a Java method?
- A. It cannot be defined as static final.
- B. It cannot be defined within another method.
- C. It must accept a parameter and return a value.
- D. It must be declared with an access modifier.
正解：B
質問 # 23
Given:
What is the result?
- A. An error occurs during compilation.
- B. Iteration plus an increasing number is printed 100 times.
- C. The program compiles and nothing is printed.
- D. Iteration plus an increasing number is printed 99 times.
正解：A
質問 # 24
Given:
What is the result?
- A. The code fails to compile. To make it compile, at line n1 insert:
this () { } - B. The code compiles and prints:
default - C. The code fails to compile. To make it compile, at line n2 insert:
this (); - D. The code fails to compile. To make it compile, at line n1 insert:
Bus () { }
正解：D
解説：
luxury
質問 # 25
Given:
Which statement, when inserted at line n1, enables the Course class to compile?
- A. int newFee;
- B. double newFee;
- C. long newFee;
- D. float newFee;
正解：B
質問 # 26
Given the code fragment:
What is the result?
- A. 0
- B. Nothing is printed.
- C. 1
- D. 2
正解：D
質問 # 27
Given:
What is the result?
- A. 0
- B. 1
- C. A compilation error occurs in the main method.
- D. A compilation error occurs in the modify method.
正解：C
質問 # 28
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 Enterprise Edition
- B. Java Standard Edition with a Compact Profile
- C. Java SE Embedded
- D. Java Micro Edition
正解：C
質問 # 29
Which statement is true about exception handling?
- A. At least one statement in a try block must throw an exception.
- B. At least one catch block must accompany a try statement.
- C. All catch blocks must be ordered from general to most specific.
- D. All statements in a try block are executed, even if an exception occurs in the middle of the try block.
正解：C
質問 # 30
Given the code fragment:
What is the result?
- A. false
true - B. true
true - C. false
false - D. A runtime exception is thrown
正解：B
質問 # 31
Identify two features of Java.
- A. robust
- B. single threaded
- C. platform independent
- D. architecture dependent
正解：A、C
質問 # 32
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
正解：A
質問 # 33
Identify three advantages of object-oriented programming.
- A. information hiding
- B. separation of state and behavior
- C. information sharing
- D. modularity
- E. code reuse
正解：A、D、E
質問 # 34
Identify three features of the Java programming language.
- A. multithreaded
- B. distributed
- C. strongly typed
- D. direct memory management
- E. dynamically typed
正解：A、B、E
質問 # 35
Given:
And the code fragment:
What is the result?
- A. White : null
- B. A compilation error occurs at line n1.
- C. null: null
- D. White : White
正解：C
質問 # 36
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