Term
The paint() method in your Java applet has one parameter. What type is the parameter?
Answer
1. String
2. pen
3. Graphics
4. Color |
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Definition
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Term
The classes in the Java Class Libraries are organized into families called __________________.
Answer
1. subclasses
2. namespaces
3. packages
4. superclasses |
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Definition
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Term
Of the following types, which one cannot store a numeric value?
Answer
a. int
b. byte
c. float
d. char
e. all of these can store numeric values |
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Definition
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Term
The Java integer type that can represent the number of people in this room (40), but not the age of the United States is :
Answer
a. int
b. short
c. char
d. byte
e. long |
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Definition
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Term
What characters must appear when when writing a literal of type float :
Answer
a. .
b. f
c. F
d. Either b or c |
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Definition
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Term
The "factory" that uses a class definition to initialze an object is called ____________________.
Answer
1. an init() method
2. a constructor
3. an initializer
4. an object factory |
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Definition
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Term
Named constants make your programs clearer and easier to maintain. To create a constant in Java that can be used in all the methods in your class, you'll normally use all of these modifiers except ______________ .
Answer
1. public
2. static
3. const
4. final |
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Definition
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Term
Variables defined inside the body of a method are called:
Answer
1. private variables
2. local variables
3. public variables
4. instance variables |
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Definition
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Term
____________________ means giving a value to a variable that already exists, not to provide a value to a newly created variable.
Answer
1. Initializing assignment
2. Variable definition
3. Variable declaration
4. Executable assignment |
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Definition
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Term
The parameter passed to the PrintStream println method:
Answer
1. can be a String or an integer
2. can be of almost any type
3. must be a String
4. must be a number |
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Definition
| can be of almost any type |
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Term
The statement System.out.print("No" + 2 + 3 + "way"); produces the output:
Answer
1. No23way
2. No5way
3. None. Illegal statement.
4. No 2 3 way |
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Definition
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Term
Which of these shows the correct way to print a literal number?
Answer
1. System.out.println('123.75');
2. System.out.println({123.75});
3. System.out.println("123.75");
4. System.out.println(123.75); |
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Definition
| System.out.println(123.75); |
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Term
When "sending a message" to an object, the object is called:
Answer
1. the request
2. the sender
3. the receiver
4. the target |
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Definition
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Term
When you write an ACM console program, you will normally do all of these except one. Which one is not like the others?
Answer
Use System.out.print() to display your output.
extend the ConsoleProgram class
import the classes in the acm.program package.
change the title bar of the window that your program uses with setTitle() |
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Definition
| Use System.out.print() to display your output. |
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Term
The JTF stands for the ACM Java Task Force. What did they do?
Answer
Mediated disputes among different ACM members, such as Microsoft, Sun, Oracle and IBM, when Java was involved.
Studied Java's suitability as a college-level teaching language and developed a library of classes designed for students.
Provided the reference documentation for the standard implementation of Java.
Promoted the use of Java across different industries and sciences. |
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Definition
| Studied Java's suitability as a college-level teaching language and developed a library of classes designed for students. |
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