- •Import java.Util.*;
- •I, II, and III
- •I only
- •I, II, and III
- •I, II, and III
- •II only
- •III only
- •I and II only
- •II only
- •I and III only
- •I only
- •II and III only
- •I only
- •I and II only
- •I and III only
- •I, II, and III
- •II only
- •II only
- •I only
- •II only
- •II and III only
- •I and III only
- •I and II
- •I, II, and III
Which of the following statements imports the entire package java.util into a Java program?
import java.util;
import util;
import util.*;
Import java.Util.*;
Which of the following operators can be used to concatenate two String objects in Java?
.
&
|
+
Delimiters for the class java.util.StringTokenizer can include which of the following?
,
_
"
I only
I and II only
None
I, II, and III
Which of the following streams typically correspond(s) to screen output?
System.in
System.out
System.err
I, II, and III
II only
III only
II and III only
Consider the following Java statement.
private static java.io.PrintWriter stdOut =
new java.io.PrintWriter(System.out, true);
At the end of execution of the Java statement, a call to stdOut.println() would result in which of the following?
Output of a new line character
Flushing of the output buffer
I only
II only
None
I and II
Consider an object stdIn instantiated by the Java statement below.
private static java.io.BufferedReader stdIn =
new java.io.BufferedReader(
new java.io.InputStreamReader(System.in));
Which of the following lines of code can be used to read an integer value from stdIn?
int value = stdIn.readLine();
int value = Integer.parseInt(stdIn);
int value = stdIn.readInteger();
int value = Integer.parseInt(stdIn.readLine());
In Java, which of the following classes is (are) unchecked exceptions?
Error
Runtime
IOException
I, II, and III
I and III only
II only
I and II only
Consider the following Java program fragment whose lines have been numbered.
1
2 try {
3
4 } catch (Exception e) {
5
6 }
Code that may throw exceptions should appear on line _____, while code that handles exceptions should appear on line _____.
1, 3
5, 3
5, 1
3, 5
If a(n) _____ exception can occur in a method that does not have a catch block to handle that exception, then a throws clause that lists this exception must be part of the method _____.
unchecked, header
checked, body
unchecked, body
checked, header
Which of the following is a Java statement that could be used to throw an IOException?
throw IOException();
new IOException();
IOException();
throw new IOException();
After a breakpoint is hit, a debugger is typically used for which of the following tasks?
Stepping through method calls, line by line
Examining a stack trace
Examining values of variables in the current method
I and II only
I and III only
II only
I, II, and III
When using a debugger to step through a program, if the current line contains a method call, which of the following executes the current line and then stops execution before executing the first line in the called method?
step over
step return
resume
step into
Which of the following is true regarding Java applications?
They are interpreted by a Web browser.
They are compiled into machine code.
They are platform-dependent.
They are run using a Java interpreter.
Which of the following is (are) architecture neutral?
Java byte code
Machine code