1Z0-805J Free Dumps Study Materials

Question 7: 次のコード? フラグメントはあります:
private static void copyContents (File source, File target) {
try {inputStream fis = new FileInputStream(source);
outputStream fos = new FileOutputStream (target);
byte [] buf = new byte [8192]; int i;
while ((i = fis.read(buf)) != -1) {
fos.write (buf, 0, i);
}
//insert code fragment here. Line **
System.out.println ("Successfully copied");
}
どのコードフラグメントは、 ラ゗ン**で独立 して挿入されたとき、 コンパ゗ルするコードを
有効にしますか。
A. } catch (IOException | NoSuchFileException e) {
System.out.println(e);
}
B. } catch (IOException | IndexOutOfBoundException e) {
System.out.println(e);
}
C. } catch (Exception | IOException | FileNotFoundException e ) {
System.out.println(e);
}
D. } catch (NoSuchFileException e ) {
System.out.println(e);
}
E. } catch (InvalidPathException | IOException e) {
System.out.println(e);
}
Correct Answer: B,D,E
Explanation:
B: Two mutually exclusive exceptions. Will work fine.
D: A single exception. Will work fine.
E: Two mutually exclusive exceptions. Will work fine.
Note: In Java SE 7 and later, a single catch block can handle more than one type of exception.
This feature can reduce code duplication and lessen the temptation to catch an overly broad
exception.
In the catch clause, specify the types of exceptions that block can handle, and separate each
exception type with a vertical bar (|).
Note 2: NoSuchFileException: Checked exception thrown when an attempt is made to access a
file that does not exist. InvalidPathException: Unchecked exception thrown when path string cannot
be converted into a Path because the path string contains invalid characters, or the path string is
invalid for other file system specific reasons. FileNotFoundException: Signals that an attempt to
open the file denoted by a specified pathname has failed. This exception will be thrown by the
FileInputStream, FileOutputStream, and RandomAccessFile constructors when a file with the
specified pathname does not exist. It will also be thrown by these constructors if the file does exist
but for some reason is inaccessible, for example when an attempt is made to open a read-only file
for writing.

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