Java
The operator that combines two conditions into a single Boolean value that is true only when both of the conditions are true, but is false other wise, is ____.
&&
You save text files containing Java source code using the file extension ___.
.Java
In Java, what is the value of 3+7*4+2?
33
The assignment operator in Java is
=
the "equal to" relational operation is _____.
==
Arguments to methods always appear within ___.
Curly braces
Usually, you want each instantiate of a class to have its own copy of ___
The data fields
You can declare variables with the same name multiple times
Within a method
All java applications must have a method named ___.
main()
The method public boolean testValue (int reponse) returns
A boolean value
In Java, methods must include all of the following except ____.
A declaration
The keyword final used with a variable declaration indicates
A symbolic constant
What is the output of the following code segment? t = 10 if ( t > 7) System.out.print("AAA"); System.out.print("BBB");
AAA
The nonstatic data components of a class often are referred to as the ___ of that class
Access types
Suppose you declare an object as Book thisBook; Before you sore data in thisBook you
Also must explicitly allocate memory for it
Which of the following elements is not required in a variable declaration?
An assigned value
Assuming a variable w has been assigned to the value 15, what does the following statement do? w == 5 ? x = 2 : x = 0;
Assigns 2 to x
What is the output of the following code segment? t = 7 if (t > 7) System.out.print("AAA"); System.out.print("BBB");
BBB
An escape sequence always begins with a(n)
Backslash
The body of a class is always written
Between curly braces
The code between a pair of curly braces in a method is a
Block
A decision is based on a(n) ____ value
Boolean
Which of the following data types can store a value in the least amount of memory?
Byte
A constructor ____ overloaded
Can be
The this reference
Can be used implicitly
A constructor ____ parameters
Can receive
Which assignment is correct in Java? Char = W
Char aChar="W";
A program or class that instantiates objects of another prewritten class is a(n)
Class client
Variables that are shared by every instantiate of a class are
Class variables
A public static method named computeSum() is located in classA. to call the method from within ClassB, use the statement
ClassA.computeSum();
Nonexecuting program statements that provide documentation are called
Comments
After you write and save a java application file, you ____ it
Compile and then resave
When stat cannot be changed after a class is compiled, the data is ____.
Constant
Which of the following is typically used in a flowchart to indicate a decision?
Diamond
In a Java program, you must use ____ to separate classes, objects, and methods
Dots
Which assignment is correct in Java? Value = 2.12
Double value = 2.12;
Assuming a variable y has been assigned the value 6, the value of !(y<7) is ____.
False
In Java, the value of (4 > 7) is ____.
False
Objects contain methods and data items, which are also known as
Fields
The concept of allowing a class's private data to be changed only by a class's own methods is known as
Information hiding
The GregorianCalendar class get () method always return a(n)
Integer
The command to execute a compiled Java application is ____.
Javac
Java supports three types of comments: ____ , _____, and javadoc
Line, block
Which of the following groups has the lowest operator precedence?
Logical OR
You send messages or information to an object through its
Methods
Non-ambiguous, overloaded methods must have the same
Name
When a block exists within another block, the blocks are
Nested
When you code an if statement within another if statement, as in the following then the if statements are ____. if (a > b) if (c > d) x = 0;
Nested
Java is architecturally
Neutral
Methods that you reference with individual objects are
Nonstatic
If you use the automatically supplied default constructor when you create an object
Numeric fields are set to 0 (zero)
An instance of a class in a(n)___
Object
Envisioning program components as objects that are similar to concrete objects in the real world is the hallmark of ____
Object-oriented programming
If you create a class that contains one method and instantiates two objects, you usually store ___ for use with the objects.
One copy of the method
A GregorianCalendar object can be created with one of the seven constructors. this means the constructors are
Overloaded
A method variable ____ a class variable within the same name
Override
All method declaration contain
Parenthesis
Most class data fields are
Private
The individual operations used in a computer program are often grouped into logical units called ____.
Procedures
Which of the following is not a type of it statement?
Reserve if
The portion of a program within which you can reference a variable is the variable's
Scope
Which of the following is not a primitive data type in Java
Sector
All java programming statements must end with a ___
Semicolon
The logical structure in which one instruction occurs after another with no branching is a
Sequence
You must compile classes written in Java into
Source code
The values of an object's attributes are also known as its
State
If a class is named Student, the class constructors named is
Student
According to the rule of operator precedence, when division occurs in the same arithmetic statement as _____, the division operation always takes place first
Subtraction
Which java statement produces the following output? w Xyz
System.out.println("w\nXyz");
A boolean variable can hold
The value of true or false
If you declare a variable as an instance variable within a class and you declare and use the same variable name within a method of the class, then within the method
The variable used inside the method takes precedence
You use a ____ to explicitly override an implicit type
Type cast
Named computer memory locations are called ____
Variables
If a method is written to receive a double parameter, and you assign an integer to the method, then the method will
Work correctly, the integer will be promoted to a double
Which of the following is a correct call to a method declared as a public static void aMethod(char code)
aMethod('Q');
You can use the statement to terminate a switch structure
break
The method with the declaration public static char procedure(double d) has a method type of
char
The argument testing in a switch structure can be any of the following except a(n) ____.
double
If you attempt to add a float, an int, and a byte, the result will be a(n)
float
Assuming the variable q has been assigned the value 3, which of the following statements displays XXX?
if ( q >7); System.out.println("XXX");
Which of the following displays "Error" when a student ID is less than 1000 or more than 9999?
if (stuID < 1000 ) System.out.println("Error"); else if (stuID > 9999) System.out.println("Error");
When you perform arithmetic with values of diverse types, Java
implicitly converts the values to an unifying type
The method with the declaration public static int aMethod(double d) has a method type of
int
Java classes are stared in a folder or
package
Which of the following method declarations is correct for a static method named displayFacts() if the method receives an int argument?
public static void displayFacts (int data)
Which of the following could be the last legally coded line of a method declared as public static int getVal(double sum)?
return;
Which of the following statements determines the square root of a number and assigns it to a variable s?
s = Math.sqrt(number);
Assuming you have declared shoeSize to be a variable of type int, which of the following is a valid assignment statement in Java?
shoeSize = 9;
A method is declared as public static void showResults (double d, int i). Which of the following is a correct method call?
showResults(12.2, 67);
The operator that combines two conditions into a single Boolean value that is true when at least one of the conditions is true is ____.
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