Oracle 1Z0-803 問題集

質問 1：
View the exhibit: What is the result when this program is executed?


A. Bob's name
B. Nothing prints
C. Bob's Name: Bob
D. Bob's Name: Jian
正解：D
解説: (Topexam メンバーにのみ表示されます)

質問 2：
Given:

What is the reference type of myZ and what is the type of the object it references?
A. Reference type is Z; object type is Y.
B. Reference type is Z; object type is Z.
C. Reference type is X; object type is Z.
D. Reference type is Y; object type is Y.
正解：A

質問 3：
Given:

What is the result?
A. null
B. 2 1
C. an infinite loop
D. 2 1 0
E. compilation fails
正解：E
解説: (Topexam メンバーにのみ表示されます)

質問 4：
You are writing a method that is declared not to return a value. Which two are permitted in the method body?
A. return null;
B. return void;
C. omission of the return statement
D. return;
正解：C,D
解説: (Topexam メンバーにのみ表示されます)

質問 5：
Given the code fragment:
Boolean b1 = true;
Boolean b2 = false;
int i = 0;
while (foo) { }
Which one is valid as a replacement for foo?
A. i = 1
B. "foo".equals("bar")
C. i == 2? -1 : 0
D. b1.compareTo(b2)
正解：B
解説: (Topexam メンバーにのみ表示されます)

質問 6：
Given:
public class TestOperator {
public static void main(String[] args) {
int result = 30 -12 / (2*5)+1;
System.out.print("Result = " + result);
} }
What is the result?
A. Result = 29
B. Result = 2
C. Result = 3
D. Result = 30
E. Result = 28
正解：D

質問 7：
Given:

What is the result?
A. Second Exception
B. First Exception Done
C. 0 Done
D. Done Third Exception
E. Third Exception
正解：E

質問 8：
Given:
public class DoBreak1 {
public static void main(String[] args) {
String[] table = {"aa", "bb", "cc", "dd"};
for (String ss: table) {
if ( "bb".equals(ss)) {
continue;
}
System.out.println(ss);
if ( "cc".equals(ss)) {
break;
}
}
} }
What is the result?
A. cc
B. aa cc
C. aa bb cc
D. Compilation fails.
E. cc dd
正解：B