1Z0-815最も有効な質問と解答で勉強

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Oracle 1Z0-815 試験概要:

Oracle 1Z0-815 試験シラバストピック:

1Z0-815に挑戦する方へ – よくある質問まとめ

Oracle Java SE 11 Programmer I 認定 1Z0-815 試験問題：

問題 #1

Which two describe reasons to modularize the JDK? (Choose two.)

A. improves security and maintainability
B. easier to expose implementation details
C. easier to understand the Java language
D. easier to build a custom runtime linking application modules and JDK modules
E. improves application robustness

問題 #2

What is the result?
public class StringReplace {
public static void main(String[] args) {
String message = "Hi everyone!";
System.out.println("message = " + message.replace("e", "X")); } }

A. A runtime error is produced.
B. message = Hi Xveryone!
C. message = Hi XvXryonX!
D. A compile time error is produced.
E. message =
F. message = Hi everyone!

問題 #3

Given:

What is the result?

A. 10
B. 0
C. It fails to compile.
D. nothing
E. A java.lang.IllegalArgumentException is thrown.

問題 #4

Which three initialization statements are correct? (Choose three.)

A. byte b = 10;
char c = b;
B. boolean true = (4 == 4);
C. int[][] e = {{1,1},{2,2}};
D. String contact# = "(+2) (999) (232)";
E. int x = 12_34;
F. float x = 1.99;
G. short sh = (short)`A';

問題 #5

Given:

Which statement is true about the Fox class?

A. Fox class must implement either Forest or Town interfaces, but not both.
B. Fox class does not have to override inhabit method, so long as it does not try to call it.
C. The inhabit method implementation from the first interface that Fox implements will take precedence.
D. Fox class does not have to override the inhabit method if Forest and Town provide compatible implementations.
E. Fox class must provide implementation for the inhabit method.

解説：