Oracle 1Z0-816 問題集

質問 1：
Given:

What is the result?
A. 6104 3
B. 3
C. 10126 3
D. 6910 3
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 2：
Given:

You want the code to produce this output:
John
Joe
Jane
Which code fragment should be inserted on line 1 and line 2 to produce the output?
A. Insert Comparator<Person> on line 1.
Insert
public int compare(Person p1, Person p2) {
return p1.name.compare(p2.name);
}
on line 2.
B. Insert Comparable<Person> on line 1.
Insert
public int compare(Person p1, Person p2) {
return p1.name.compare(p2.name);
}
on line 2.
C. Insert Comparator<Person> on line 1.
Insert
public int compareTo(Person person) {
return person.name.compareTo(this.name);
}
on line 2.
D. Insert Comparator<Person> on line 1.
Insert
public int compare(Person person) {
return person.name.compare(this.name);
}
on line 2.
正解：C
解説: (Topexam メンバーにのみ表示されます)

質問 3：
Which code fragment compiles?

A. Option A
B. Option C
C. Option D
D. Option B
正解：C
解説: (Topexam メンバーにのみ表示されます)

質問 4：
You are working on a functional bug in a tool used by your development organization. In your investigation, you find that the tool is executed with a security policy file containing this grant.

What action should you take?
A. Nothing, because it is not related to the bug you are investigating.
B. File a security bug against the tool referencing the excessive permission granted.
C. Nothing, because it is an internal tool and not exposed to the public.
D. Nothing, because listing just the required permissions would be an ongoing maintenance challenge.
E. Remove the grant because it is excessive.
正解：B
解説: (Topexam メンバーにのみ表示されます)

質問 5：
Which two are successful examples of autoboxing? (Choose two.)
A. Integer e = 5;
B. String a = "A";
C. Float g = Float.valueOf(null);
D. Long c = 23L;
E. Double d = 4;
F. Float f = 6.0;
正解：A,B

質問 6：
Which two are functional interfaces? (Choose two.)

A. Option E
B. Option A
C. Option C
D. Option D
E. Option B
正解：A,C
解説: (Topexam メンバーにのみ表示されます)

質問 7：
Which is a proper JDBC URL?
A. http://localhost mysql.jdbc:3306/database
B. http://localhost.mysql.com:3306/database
C. jdbc:mysql://localhost:3306/database
D. jdbe.mysql.com://localhost:3306/database
正解：C
解説: (Topexam メンバーにのみ表示されます)

質問 8：
Given:

What code must you insert on Line 1 to enable the code to print Hello world?
A. Hello myH = new Hello();
Hello.Greeting myG = myH.new Greeting();
myG.sayHi();
B. Hello.Greeting myG = new Hello.Greeting() myG.sayHi();
C. Hello myH = new Hello(); Greeting myG = new Greeting(); myG.sayHi ();
D. Hello myH = new Hello();
Hello.Greeting myG = myH.new Hello.Greeting();
myG.sayHi();
正解：A