Mld1 Class Final Review Part1
MLD1 Class Mid-Term Review Part1
- 1.The line of Java code below has the last character missed.int lastOne = 3The missed character is:
- A.
#
- B.
{
- C.
"
- D.
;
- 2.The text below is a fragment of a Java code. public class Random {public static void main(String[] args) {int rMath = Math.random()*100 == This code should be saved as:
- A.
Public class.java
- B.
Class Random.java
- C.
Random.java
- D.
Random.java
- 3.According to the Java program code fragment below,public class Random { public static void main(String[] args) { int rMath = Math.random()*100 == int rMath means:
- A.
RMath is a name of an undefined variable
- B.
RMath is a variable and its value is an integer
- C.
RMath is the name of the program
- D.
Int rMath is a typo and should be fixed
- 4.The following line of a Java code:System.out.println("The number = " + num);makes the computer to:
- A.
Print a new line "The number = + num".
- B.
Print a new line "The number = " and then the value of the variable "num".
- C.
Prints a line "The number = + num" on a paper using a printer.
- D.
Prints a new line showing only the value of the variable "num".
- 5.For the code line: System.out.println("The number = " + num); and the code line:System.out.print("The number = " + num);,the following is true:
- A.
They do exactly the same thing.
- B.
They print out different numbers.
- C.
The first one makes the continuation of the text/information to be printed on the next line. The second does not, so that the new information would be printed on the same line.
- D.
None of the above is true for these two lines.
- 6.The line: tenPercentTax = 0.10*(netIncome - 30000);means:
- A.
The value of the variable "tenPercentTax" equals to the result of (netIncome - 30000) times 0.10
- B.
The value of the variable "tenPercentTax" equals to the result of 0.10 times the variable "netIncome" and then minus 30000.
- C.
The value of the variable "tenPercentTax" equals to the result of 0.10 times 30000 and then minus the variable "netIncome".
- D.
The value of the variable "tenPercentTax" equals to the result of 0.10 times negative 30000.
- 7.The word "double" in the following Java code line:double sum =means that
- A.
Variable "sum" will be multiplied by 2.
- B.
The memory space for the variable "sum" will be twice more than a regular one.
- C.
There are actually 2 variables called "sum".
- D.
Variable "sum" may not have more than 2 digits.
- 8.In Java code, The following line:String name = "Student";actually means:
- A.
The next string has its own name "Student"
- B.
Student's name must be typed in.
- C.
"name" is a text variable and its value is the word "String"
- D.
"name" is a text variable and its value is the word "Student"
- 9.A Java class code ends with:
- A.
}
- B.
)
- C.
]
- D.
()
- 10.An integer is:
- A.
A positive whole number
- B.
A decimal
- C.
Any whole number (includes positive, negative, and zero)
- D.
A fraction
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