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70 Cards in this Set
- Front
- Back
The term JRE stands for
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Java Runtime Environment
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Source code that has been converted to a platform-independent format is also called
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bytecode
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Which is NOT a common program for developing Java applications?
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Javabrew
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File extension used for Java source code
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.java
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File extension used for compiled Java code
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.class
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A program that executes Java files
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interpreter
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The term JDK stands for
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Java Development Kit
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A program that translates Java source code into a platform-independent format
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compiler
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The term JVM stands for
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Java Virtual Machine
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The term IDE stands for
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Integrated Development Environment
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The term SE (as it applies to Java) stands for
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Standard Edition
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Groups of related classes are organized into
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packages
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You can use a Scanner object to
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get the next token in an input line
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Which keyword is used to mean that a method won't return any values?
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void
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Which of the following stores a value that can change as the program executes?
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variable
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When using the AWT, one is using the
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abstract windows toolkit
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A block of code that perform a particular task is called a(n):
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method
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Which of the following is used to indicate a block comment?
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/* */
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API stands for which of the following
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Application program interface
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Which of the following is a symbol for a single line comment in Java?
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//
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Converting data from one type to another is referred to as
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casting
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A data type that can hold only true or false values is referred to as
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boolean
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What is the value of score after the following statement is run: int score = (int) 93.75;
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93
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Which of the following will NOT subtract 1 from x?
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x = -1
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Which of the following is NOT equivalent to x = x + 1?
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x==1
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Which is NOT one of the eight primitive Java data types?
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triple
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Which of the following is the correct name for a constant?
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SALES_TAX
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The order of precedence, from first to last, for arithmetic operations is
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increment, multiply, add
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The keyword to declare a constant is
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final
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A byte can hold how many bits?
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8
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Coding one IF statement inside of another IF statement is known as
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nesting
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Which operator returns true if both operands are equal?
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==
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Block scope means that a variable
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can't be used outside of the set of braces that it's declared in
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Which is NOT a basic control structure?
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Modification
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The Java implementation of the case structure uses which keyword?
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switch
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Which logical operator returns true if either expression is true
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A boolean operator that only evaluates the second condition when necessary is a(n)
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short-circuit
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Which logical operator returns true only if BOTH expressions are true?
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&
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The keyword used to code a class method is
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static
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The method Double.parseDouble( ) is an example of which of the following?
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Class method
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An object that contains information about an error that has occurred is a(n)
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exception
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Which statement is required to match a try block?
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catch
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Making sure that any data entered falls within upper and lower limits is known as
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range checking
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Division by zero would be an example of which type of exception class?
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Arithmetic
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The most general class to handle an exception is
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exception
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Which statement is always optional in exception handling?
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finally
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Exception handing using the try statement is done by
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by coding a try block around the statement that may cause the exception
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Which method of the Scanner class can be used to determine if the next string entered is a double value?
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hasNextDouble( )
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Checking user input to make sure that it is valid is known as
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data validation
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After an exception has occurred, the remaining statement in the try block are
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skipped
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What is value of m[1][1] in the following array?
int m [ ][ ] = { {9, 8, 7, 6}, {5, 4, 3, 2} }; |
4
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What is the value of len after the following statements have run?
int a [ ] = {1, 2}; int b [ ] = {4, 5, 6, 7}; int len = b.length - a.length; |
2
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The length of the array that follows is
int[ ] grades = new int[4]; |
4
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What is the value of nums[1] after the following statement has run?
int nums [ ] = {6, 7, 8, 9}; |
7
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What is the value of prices[1] after the following statements are run?
double[ ] prices = new int[2]; prices[0] = 9.98; prices[1] = 10.99; prices = new int[2]; |
0
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The array that follows is an array of which type?
double[ ] scores = new double[3]; |
double
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What is printed by the following?
int[ ] a = new int[3]; a[2] = 7; for (int i=0; i<a.length; i++) System.out.print(a[i]); |
007
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How many rows are in the following array?
String[ ][ ] names = new String[200][10]; |
200
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What is the value of a[1] after the following statements have run?
int[ ] a = {1, 2, 3}; int[ ] b = {4, 5, 6}; a = b; b[1] = 3; |
3
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What is the length of m[2] in the following?
int m [ ][ ] = { {9, 8, 7}, {6, 5, 4}, {3, 2, 1} }; |
3
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What is printed by the following enhanced for loop?
String[ ] coffees = {"Jamaican", "Kenya, "Tribute"}; for (String s : coffees) System.out.println(s); |
Jamaican Kenya Tribute
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What coffee is represented by coffees.length - 1?
String[ ] coffees = {"Jamaican", "Kenya, "Tribute"}; |
Tribute
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The number of dimensions in the array that follows is:
int[ ] n = { 1, 2, 3 }; |
1
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What is the value of coffees[1] in the following array?
String[ ] coffees = {"Antigua", "French Roast", "Kenya, "Pike Place"}; |
French Roast
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What is the value of the variable x after the following statements have run?
int[ ] a = {1, 2, 3}; int x = 0; for (int n : a) x+=n; |
6
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What is the value of nums.length for the following array?
int[ ][ ] nums = { {1, 2}, {3, 4, 5}, {6, 7, 8, 9}, {10} }; |
4
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What is printed by the following for loop?
int[ ][ ] m = { {4, 3}, { 2, 1} }; for (int i=0; i<m.length; i++) System.out.print (m[i][i]); |
41
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What kind of array is the following?
int[ ][ ] nums = { {1, 2}, {3, 4, 5}, {6, 7, 8, 9}, {10} }; |
jagged
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The number of dimensions in the array that follows is:
int[ ][ ] m = { {9, 8, 7}, {6, 5, 4}, {3, 2, 1} }; |
2
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What is the value nums[1].length for the following array?
int[ ][ ] nums = { {1, 2}, {3, 4, 5}, {6, 7, 8, 9}, {10} }; |
3
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