1Z1-803試験無料問題集（216題）「Oracle Java SE 7 Programmer I 認定」

出題：1

Given: Which two actions, used independently, will permit this class to compile?

A. Adding throws IOException to the doSoomething() method signature

B. Adding throws IOException to the dosomething() method signature and changing the catch argument to IOException

C. Adding throws IOException to the main() method signature

D. Adding throws IOException to the main() method signature and to the dosomething() method

E. Adding throws IOException to the main() method signature and changing the catch argument to IOException

正解：B,D 解答を投票する

出題：2

What is the proper way to defined a method that take two int values and returns their sum as an int value?

A. int sum(int first, second) { return first + second; }

B. int sum(int first, int second) { first + second; }

C. void sum (int first, int second) { return first + second; }

D. sum(int first, int second) { return first + second; }

E. int sum(int first, int second) { return first + second; }

正解：E 解答を投票する

出題：3

Given:
public class TestLoop {
public static void main(String[] args) {
int array[] = {0, 1, 2, 3, 4};
int key = 3;
for (int pos = 0; pos < array.length; ++pos) {
if (array[pos] == key) {
break;
}
}
System.out.print("Found " + key + "at " + pos);
} }
What is the result?

A. An exception is thrown at runtime

B. Compilation fails

C. Found 3 at 2

D. Found 3 at 3

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：4

Which two statements correctly describe checked exception?

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

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

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

正解：A,D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：5

Which two are Java Exception classes?

A. IllegalArgumentException

B. SercurityException

C. TooManyArgumentsException

D. DuplicatePathException

正解：A,B 解答を投票する

出題：6

Given:

What is the result?

A. Second Exception

B. First Exception Done

C. Third Exception

D. Done Third Exception

E. 0 Done

正解：C 解答を投票する

出題：7

An unchecked exception occurs in a method dosomething()
Should other code be added in the dosomething() method for it to compile and execute?

A. No other code needs to be added.

B. The Exception must be caught

C. The Exception must be caught or declared to be thrown.

D. The Exception must be declared to be thrown.

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：8

You are writing a method that is declared not to return a value. Which two are permitted in the method body?

A. return void;

B. omission of the return statement

C. return;

D. return null;

正解：B,C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：9

Given the code fragment:
public class Test {
static String[][] arr =new String[3][];
private static void doPrint() {
//insert code here }
public static void main(String[] args) {
String[] class1 = {"A","B","C"};
String[] class2 = {"L","M","N","O"};
String[] class3 = {"I","J"};
arr[0] = class1;
arr[1] = class2;
arr[2] = class3;
Test.doPrint();
}
}
Which code fragment, when inserted at line //insert code here, enables the code to print COJ?

A. for (int i = 0;i < arr.length-1;i++) {
int j = arr[i].length-1;
System.out.print(arr[i][j]);
i++;
}

B. private static void doPrint() {
for (int i = 0;i < arr.length;i++) {
int j = arr[i].length-1;
System.out.print(arr[i][j]);
}
}

C. int i = 0;
for (String[] sub: arr) {
int j = sub.length -1;
for (String str: sub) {
System.out.println(str[j]);
i++;
}
}

D. int i = 0;
for (String[] sub: arr[][]) {
int j = sub.length;
System.out.print(arr[i][j]);
i++;
}

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：10

Given:
public class ComputeSum {
public int x;
public int y;
public int sum;
public ComputeSum (int nx, int ny) {
x = nx; y =ny;
updateSum();
}
public void setX(int nx) { x = nx; updateSum();}
public void setY(int ny) { x = ny; updateSum();}
void updateSum() { sum = x + y;}
}
This class needs to protect an invariant on the sum field.
Which three members must have the private access modifier to ensure that this invariant is maintained?

A. The x field

B. The y field

C. The setX ( ) method

D. The setY ( ) method

E. The sum field

F. The ComputerSum ( ) constructor

正解：C,D,E 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：11

Given:

A. X Y X

B. Y Y X

C. X XX

D. Y YY

正解：D 解答を投票する

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