Question
Which line of code will set the String s to the value happy? Question 1 options: s
Which line of code will set the String s to the value "happy"?
Question 1 options:
s <- "happy"; | |
set s to "happy"; | |
"happy" = s; | |
s = "happy"; |
Question 2 (1 point)
What is the value of the expression (2 + 3 + "fun")?
Question 2 options:
5 | |
23fun | |
5fun | |
error |
Question 3 (1 point)
Java ints can only represent integers. Decimal values must be handled by a different type.
Question 3 options:
True | |
False |
Question 4 (1 point)
The second line of following code has an error. What change will fix it so the final value in x will be 199?
double b = 99.6; int x = b * 2.0;
Question 4 options:
int x = (int)(b * 2.0); | |
int x = b * 2; | |
int x = (int)b * 2; | |
double x = b * 2.0; |
Question 5 (1 point)
A Java int type can hold any integer.
Question 5 options:
True | |
False |
Question 6 (1 point)
What is the value of the following expressions in Java?
20 / 3
Your Answer:Question 6 options:
Answer |
Question 7 (1 point)
What is the value of the following expression
4%3 + 1
Question 7 options:
2 | |
2.3333333333 | |
0 | |
1 |
Question 8 (1 point)
* has higher precedence than -
Question 8 options:
True | |
False |
Question 9 (1 point)
Which command can be used to compile a Java program saved in a file called MyProgram.java
Question 9 options:
javac MyProgram.java | |
javac MyProgram | |
java MyProgram.java | |
java MyProgram |
Question 10 (1 point)
A Java double can represent all real numbers between 0 and 1.
Question 10 options:
True | |
False |
Question 11 (1 point)
Java is case-sensitive.
Question 11 options:
True | |
False |
Question 12 (1 point)
What is the value of the expression of boolean variables a and b
a && b
given that a is true and b is false.
Question 12 options:
True | |
False |
Question 13 (1 point)
In the main method, how would you set an int called b to the value held in args[0]?
Question 13 options:
int b = Integer.parseInt(args[0]); | |
args[0] = b; | |
int b = args[0]; | |
int b = Scanner.nextInt(args[0]); |
Question 14 (1 point)
What is the value of the expression ("fun" + 2 + 3)?
Question 14 options:
fun23 | |
fun+2+3 | |
fun5 | |
fun 23 |
Question 15 (1 point)
What is the signature of the method that is the starting point of a Java program?
Question 15 options:
public void main(String[] args) | |
public static void start(String args) | |
public static void main(String[] args) | |
public static void main(String args) |
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