1Z1-803無料問題集「Oracle Java SE 7 Programmer I」

質問 1

Given:
abstract class A1 { public abstract void m1(); public void m2() { System.out.println("Green"); }
}
abstract class A2 extends A1 { public abstract void m3(); public void m1() { System.out.println("Cyan"); } public void m2() { System.out.println("Blue"); }
}
public class A3 extends A2 { public void m1() { System.out.println("Yellow"); }
public void m2() { System.out.println("Pink"); }
public void m3() { System.out.println("Red"); }
public static void main(String[] args) {
A2 tp = new A3();
tp.m1();
tp.m2();
tp.m3();
}
}
What is the result?

（A）Compilation Fails

（B）Cyan Blue Red

（C）Cyan Green Red

（D）Yellow Pink Red

正解：D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 2

Given the code fragment:
System.out.printIn ("Result: " +3+5);
System.out.printIn ("Result: " + (3+5));
What is the result?

（A）Result: 35 Result: 8

（B）Result: 8 Result: 35

（C）Result: 35 Result: 35

（D）Result: 8 Result: 8

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 3

Given the code fragment:
System.out.printIn("Result: " + 2 + 3 + 5); System.out.printIn("Result: " + 2 + 3 * 5);
What is the result?

（A）Result: 235 Result: 215

（B）Result: 10 Result: 25

（C）Result: 215 Result: 215

（D）Compilation fails

（E）Result: 10 Result: 30

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 4

Given:
public class Natural { private int i; void disp() { while (i <= 5) { for (int i=1; i <=5;) { System.out.print(i + " ");
i++; } i++; } } public static void main(String[] args) { new Natural().disp(); }
} What is the result?

（A）Prints 1 2 3 4 5 once

（B）Prints 1 2 3 4 5 six times

（C）Prints 1 3 5 once

（D）Compilation fails

（E）Prints 1 2 3 4 5 five times

正解：B 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 5

Given the code fragment:
Int [] [] array = {{0}, {0, 1}, {0, 2, 4}, {0, 3, 6, 9}, {0, 4, 8, 12, 16}};
Systemout.printIn(array [4] [1]);
System.out.printIn (array) [1] [4]);
What is the result?

（A）4 An ArrayIndexOutOfBoundException is thrown at run time

（B）Null 4

（C）An IllegalArgumentException is thrown at run time

（D）4 Null

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 6

Given:
public class ScopeTest {
int j, int k;
public static void main(String[] args) {
ew ScopeTest().doStuff(); }
void doStuff() {
nt x = 5;
oStuff2();
System.out.println("x");
}
void doStuff2() {
nt y = 7;
ystem.out.println("y");
or (int z = 0; z < 5; z++) {
ystem.out.println("z");
ystem.out.println("y");
}
Which two items are fields?

（A）z

（B）j

（C）k

（D）y

（E）x

正解：B、C 解答を投票する

質問 7

Given:

How many times is 2 printed as a part of the output?

（A）Twice

（B）Zero

（C）Once

（D）Compilation fails.

（E）Thrice

正解：E 解答を投票する

質問 8

Given the code fragment:

What is the result if the integer aVar is 9?

（A）9 Hello world!

（B）10 Hello world!

（C）Compilation fails.

（D）10 Hello universe!

正解：B 解答を投票する

質問 9

Given the code fragment:
String[] cartoons = {"tom","jerry","micky","tom"};
int counter =0;
if ("tom".equals(cartoons[0])) {
counter++;
} else if ("tom".equals(cartoons[1])) {
counter++;
} else if ("tom".equals(cartoons[2])) {
counter++;
} else if ("tom".equals(cartoons[3])) {
counter++;
}
System.out.print(counter);
What is the result?

（A）1

（B）4

（C）2

（D）0

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 10

Which two will compile, and can be run successfully using the command:
Java fred1 hello walls

（A）Option D

（B）Option B

（C）Option C

（D）Option A

正解：A、C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 11

Which two statements correctly describe checked exception?

（A）These are exceptional conditions that are external to the application, and that the application usually cannot anticipate or recover from.

（B）Every class that is a subclass of Exception, excluding RuntimeException and its subclasses, is categorized as checked exception.

（C）These are exceptional conditions that are internal to the application, and that the application usually cannot anticipate or recover from.

（D）These are exceptional conditions that a well-written application should anticipate and recover from.

（E）Every class that is a subclass of RuntimeException and Error is categorized as checked exception.

正解：B、D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 12

Give: What is the result?

（A）13

（B）An exception is thrown at runtime

（C）1525

（D）Compilation fails

（E）The program fails to execute due to runtime error

正解：C 解答を投票する

質問 13

Given the code fragment:
1.ArrayList<Integer> list = new ArrayList<>(1);
2.list.add(1001);
3.list.add(1002);
4.System.out.println(list.get(list.size()));
What is the result?

（A）An exception is thrown at run time due to error on line 3

（B）Compilation fails due to an error on line 1.

（C）1002

（D）An exception is thrown at run time due to error on line 4

正解：D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

1Z1-803 無料問題集「Oracle Java SE 7 Programmer I」

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