Oracle 1z0-811リアル試験問題解答は無料 [Q40-Q62]

Oracle 1z0-811リアル試験問題解答は無料

試験問題集で1z0-811練習無料最新のOracle練習テスト

Oracle 1Z0-811認証は、IT業界で非常に評価されており、求職者の差別化要因として機能します。雇用主は、テクノロジーを確実に理解し、学習意欲を持っていることを実証しているため、認定された個人を好みます。 Java Foundationsで認定されていることは、個人が新しい機会のロックを解除し、キャリアを加速するのに役立ちます。

質問 # 40
Given the code fragment:

What is the result?

A. lotus jasmine
B. lotus lily
C. lotus
D. A compilation error occurs.

正解：B

質問 # 41
Given:

What is the result?

A. 0
B. A compilation error occurs.
C. 1
D. 2

正解：B

質問 # 42
Given the code fragment:

What is the result?

A. 0
B. 1
C. 2
D. The program executes an infinite number of times.

正解：A

質問 # 43
Given:

What is the output?

A. a
B. 1 2 3 aaaa
C. 1 2 aaa
D. Compilation fails

正解：A

質問 # 44
Given the code fragment:

What is the result?

A. Julia
Peter
B. A runtime exception is thrown.
C. Peter
Julia
D. A compilation error occurs.

正解：A

質問 # 45
Given the code fragment:

Which code fragment can be inserted at line n1 to enable the code to compile?

A. new int num[];
B. int[] num;
C. int num[10];
D. int[10] num;

正解：B

質問 # 46
Given the code fragment:

Which code fragment can be inserted at line n1 to enable the code to print 0.0?

A. Ball b = new Ball(0.0);
B. Ball b = new Ball();
C. Ball b = null;
b.weight = 0.0;
D. Ball.weight = 0.0;

正解：B

質問 # 47
Which two statements are true about the Java Runtime Environment (JRE)?

A. It contains the JDK and Java APIs.
B. It is platform independent.
C. It is responsible for garbage collection.
D. It interprets bytecode stored in a .class file.
E. You must install the JRE to compile a .java file.

正解：B、D

質問 # 48
Given the code fragment:

What is the result?

A. Unknown issues.
Invalid divisor.
B. Invalid divisor.
C. A compilation error occurs.
D. Unknown issues.

正解：C

質問 # 49
Given the code fragment:

Which for loop statement can be used to print 135?

A. for(int idx = 1; idx < arr.length; idx+=2) {
System.out.print (arr[idx]);
}
B. for(int idx = 0; idx < arr.length; idx+=2) {
System.out.print (arr[idx]);
}
C. for(int idx = 1; idx < arr.length-1; idx++) {
System.out.print (arr[idx++]);
}
D. for(int idx = 0; idx < arr.length; idx++) {
System.out.print (arr[idx]);
}

正解：B

質問 # 50
Given the code fragment:

What is the result?

A. true
true
B. false
true
C. A runtime exception is thrown
D. false
false

正解：A

質問 # 51
Given the code

What is the result?

A. num = 99
B. num = 0
C. The program executes indefinitely.
D. num = 100

正解：A

質問 # 52
Given:

What is the result?

A. 100
100
B. 100
200
C. A compilation error occurs at line n2.
D. A compilation error occurs at line n1.

正解：A

質問 # 53
Which package would you import to use the Random class?

A. java.lang
B. java.math
C. java.util
D. java.io

正解：C

質問 # 54
Given the code fragment:

Which two code fragments are valid at line 2?

A. private String name = "John";
public void display() {
System.out.print(name);
}
B. for (int count = 0; count < 5; count++) {
System.out.print(count);
}
C. package p1;
D. import java.util.*;
public void display() {
List<Integer> nums = new ArrayList<> ();
}
E. {
private int num;
}

正解：A、C

質問 # 55
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. It is a marketing statement because Java programs must be compiled for a specific platform in order to run.
C. Java programs can run on any Java Virtual Machine without being recompiled.
D. Java programs are designed to run only in web browsers and, thus, can run wherever there is a browser.

正解：C

質問 # 56
Identify two valid data types for the operands of the addition (+) operator?