Test 1 Flashcards

Front 1

Variables are

Back 1

XSymbolic names made up by the programmer that represents locations in the computer'sRAM

Reserved words

Symbolic names made up by the programmer whose values cannot be changed

Operators that perform operations on one or more operands

Front 2

Suppose you are at an operating system command line, and you are going to use the following command to compile a program:

javac MyClass.java

Before entering the command, you must

Back 2

Save the program with the .comp extension

Execute the java.sun.com program

Correct! Make sure you are in the same directory or folder where the MyClass.java file is located

Close all other Windows on your computer system

Front 3

This is a software entity that contains data and procedures.

Back 3

Object

Front 4

Because Java byte code is the same on all computers, compiled Java programs

Back 4

Are Highly Portable

Front 5

Which of the following commands will compile a program named ReadIt?

Back 5

java ReadIt.java

java ReadIt.javac

Correct! javac ReadIt.java

javac ReadIt.javac

Front 6

Which of the following will run the compiled program ReadIt?

Back 6

java ReadIt

Front 7

If the following Java statements are executed, what will be displayed?
System.out.println("The top three winners are\n");
System.out.print("Jody, the Giant\n");
System.out.print("Buffy, the Barbarian");
System.out.println("Adelle, the Alligator");

Back 7

The top three winners are

Jody, the Giant

Buffy, the BarbarianAdelle, the Alligator

Front 8

What would be printed out as a result of the following code?

Back 8

Nothing. This is an error.

Front 9

Which of the following is not a rule that must be followed when naming identifiers?

Back 9

The first character must be one of the letters a-z, A-Z, and underscore or a dollar sign.

Correct! Identifiers can contain spaces.

Uppercase and lowercase characters are distinct.

After the first character, you may use the letters a-z, A-Z, the underscore, a dollar sign, or digits 0-9.

Front 10

Which of the following is not a primitive data type?

Back 10

short

long

float

Correct! String

Front 11

The boolean data type may contain values in the following range of values

Back 11

true or false

-128 to +127

-2,147,483,648 to +2,147,483,647

-32,768 to +32,767

Front 12

What is the result of the following statement?25/4 + 4 * 10 % 3

Back 12

19

You Answered 5.25

3

Correct Answer 7

Front 13

What will be displayed as a result of executing the following code?

Back 13

x = 32, y = 4

x = 9, y = 52

Correct! x = 37, y = 5

x = 160, y = 80

Front 14

What will be the displayed when the following code is executed?

final int x = 22, y = 4;
y += x;
System.out.println("x = " + x + ", y = " + y);

Back 14

x = 22, y = 4

You Answered x = 22, y = 26

x = 22, y = 88

Correct Answer Nothing, this is an error

Front 15

In the following Java statement what value is stored in the variable name?String name = "John Doe";

Back 15

"John Doe"

Correct! The memory address where "John Doe" is located

"name"

The memory address where name is located

Front 16

To print "Hello, world" on the monitor, use the following Java statement

Back 16

SystemOutPrintln("Hello, world");

System.out.println{"Hello, world"}-Correct! System.out.println("Hello, world");

Print("Hello, world");

Front 17

To display the output on the next line, you can use the println method or use this escape sequence in the print method.

Back 17

\n (Ans)

\r

\t

\b

Front 18

Which of the following expressions will determine whether x is less than or equal to y?

Back 18

x > y

x =< y

Correct! x <= y

x >= y

Front 19

What will be the value of ans after the following code has been executed?

Back 19

10

145

Correct! 20

No value, there is a syntax error

Front 20

If chr is a char variable, which of the following if statements is written correctly?

Back 20

if (char == 'a')

Front 21

What will be the values of ans, x, and y after the following statements are executed?

Back 21

ans = 60, x = 50, y =100

Correct! ans = 60, x = 0, y = 50

ans = 45, x = 50, y = 0

ans = 45, x = 50, y = 50

Front 22

What will be the value of bonus after the following code is executed?

Back 22

200

500

1000(Ans)

1250

Front 23

f str1 and str2 are both Strings, which of the following will correctly test to determine whether str1 is less than str2?

Back 23

1, 2, and 3 will all work

2

Correct Answer 3

You Answered 2 and 3

Front 24

What would be the value of x after the following statements were executed?

Back 24

5

20 (Ans)

25

30

Front 25

What is the value of x after the following code has been executed?

Back 25

75

90

15

165 (Ans)