Which two statements are true for a two-dimensional array of primitive data type?

• A.It cannot contain elements of different types.
• B.The length of each dimension must be the same.
• C.At the declaration time, the number of elements of the array in each dimension must be specified.
• D.All methods of the class object may be invoked on the two-dimensional array.

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Which statement is true about java.time.Duration?

• A.It preserves daylight saving time.
• B.It tracks time zones.
• C.It defines time-based values.
• D.It defines date-based values.

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Given the code fragments:

and

What is the result?

• A.A compilation error occurs at line n2.
• B.Run...
  Call...
• C.A compilation error occurs at line n1.
• D.The program prints Run... and throws an exception.

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Which two code blocks correctly initialize a Locale variable? (Choose two.)

• A.Locale loc2 = Locale.getInstance("ru");
• B.Locale loc4 = Locale.UK;
• C.Locale loc5 = new Locale ("ru", "RU");
• D.Locale loc1 = "UK";
• E.Locale loc3 = Locale.getLocaleFactory("RU");

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Given:
class RateOfInterest {
public static void main (String[] args) {
int rateOfInterest = 0;
String accountType = "LOAN";
switch (accountType) {
case "RD";
rateOfInterest = 5;
break;
case "FD";
rateOfInterest = 10;
break;
default:
assert false: "No interest for this account"; //line n1
}
System.out.println ("Rate of interest:" + rateOfInterest);
}
}
and the command:
java -ea RateOfInterest
What is the result?
Rate of interest: 0

• A.An AssertionError is thrown.
  No interest for this account
• B.
• C.A compilation error occurs at line n1.
• D.

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