1Z1-805 試験問題を無料オンラインアクセス

Which method or methods should you implement to create your own implementation of the java.nio.file.PathMatcher interface?

• A.matches(Path) , fails(Path), enable(boolean)
• B.matches(Path) , fails(Path) , setPreferred (String)
• C.matches(Path)
• D.matches(Path), fails(Path)

Which two methods are defined in the FileStore class print disk space information?

• A.getFreeSpace ()
• B.getUsed ()
• C.getTotalCapacity ()
• D.getTotalSpace ()
• E.getUsableSpace ()

Which two statements are true regarding the try with resources statement?

• A.The close methods of resources are called in the reverse order of their creation.
• B.All the resources must implement the java.io.closeable interface.
• C.The resources declared in a try with resources statement are not closed automatically if an exception occurs inside the try block.
• D.In a try with resources statement, any catch or finally block is run after the resources have been closed.

Given this code fragment:
try {
String query = "SELECT * FROM Item";
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery(query);
ResultSetMetaData rsmd = rs.getMetaData();
int rowCount = rsmd.getRowCount();
System.out.println ("Processing: " + rowCount + " rows.");
while (rs.next()) {
// Process each row
}
} catch (SQLException se) {
System.out.println("Error");
}
Assume that the SQL query returns records. What is the result?

• A.Compilation fails.
• B.An exception is thrown at runtime
• C.The program prints Error
• D.The statement at line 16 execute

Which statement is true about the take method defined in the WatchService interface?

• A.Retrieves and removes all pending events for the watch key, returning a list of the events that were retrieved.
• B.Retrieves and removes the next watch key: waits if no key is yet present.
• C.Retrieves and removes the next watch key. If a queued key is not immediately available, the program waits for the specified wait time.
• D.Retrieves and removes the next watch key, or returns null of none are present.