2

Question 1

None of the wrapper classes own any static methods.

Answer

true

Question 2

You can invoke String methods from a String literal.

Answer

true

Question 3

Two instances of the Integer wrapper class can be compared for equality, on the basis of their int values, using ==.

Answer

true

Question 4

The StringTokenizer .nextToken() method actually removes tokens from the tokenizer object.

Answer

true

Question 5

If a method performs an action that could result in an Exception, that action must be contained in a try/catch block.

Answer

true

Question 6

The code that might generate an exception that you wish to catch must be written just before the beginning of the try block.

Answer

true

Question 7

A try/catch block is used to catch exceptions.

Answer

true

Question 8

Exceptions are Objects

Answer

true

Question 9

The value contained in a static attribute can be different for every instance of the class that defines that attribute.

Answer

true

Question 10

A class definition determines and limits the behaviour of an instance of that class.

Answer

true

Question 11

Classes can contain static or non-static methods, but not both.

Answer

true

Question 12

A constructor method is only invoked once during the instantiation of an object.

Answer

true

Question 13

When writing Java programs, it is good programming practice to close all open files before the program terminates.

Answer

true

Question 14

Reading data from a file does not modify the contents of the file.

Answer

true

Question 15

Opening a text file for ‘write’ from a Java program with a FIleOutputStream object can throw a FileNotFoundException.

Answer

true

Question 16

In a Java program, it is possible to have the same file open for output at one point in the program, and open for input at a different point in the program.

Answer

true

Question 17

If a method assigns a new value to an "int" parameter, that value is also assigned to the variable that was passed to the parameter.

Answer

true

Question 18

Suppose Fish is a defined class.  It is possible to have two variables myFish1 and myFish2 that refer to the same Fish object.

Answer

true

Question 19

A comparison of two objects using == will yield true only if the attribute contents of both objects are exactly the same.

Answer

true

Question 20

The == equality operator will always return "true" when applied to two Strings if the two Strings appear the same when printed.

Answer

true

2

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