Programming Debugging Quiz
Which symbol means "not equal to"?
!=
Which is an example of a int ?
2
Variable names can start with a number. True or False?
False
He is the developer of Java Programming Language
James Gosling
A variable that holds true or false
boolean
If J=true and K=false, what is J&&K?
false
Files containing Java source code use the file extension __________.
.java
For paragraph comment, you should use:
/*......*/
What does a comment look like in Java?
//comment
Which of the following will result in a double (1.0 + 3; 3 / 5; (int)3.0; 5 * 200)
1.0+3
We use Scanner Library in java for...
Allows the user to enter data
What makes java platform independent
Because java has its own JRE (runtime environment)
What is byte code in Java?
Code generated by a Java compiler
the process of converting Java code into byte code that can then be understood by the Java interpreter
Compiling
Modulus operator (%) can be applied to which of these?
Integers and Floating - point numbers
Which provides runtime environment for java byte code to be executed?
JVM (virtual machine)
Which company owns Java?
Oracle
All Java programming statements must end with a __________.
Semicolon
Which statement transfer execution to different parts of your code based on the value of an expression?
Switch
How do you print "Hello" in Java?
System.out.print("Hello");
What prints out "I love Java" successfully?
System.out.println("I love" + " Java");
When we want to print in Java, we use the code ......
System.out.println();
What is the purpose of a variable in Java?
Their purpose is to label and store data in memory
We use For loop ..........
To repeat a specified number of operations.
A compiler ignores whitespace between words and lines.
True
Class is another name for program in Java
True
True or False : Java is case sensitive, which means identifier Hello and hello would have different meaning in Java
True
True or false? The declaration must always be stated before assignment
True
Can an assignment statement be assigned in same line as declaration or later?
Yes
What is syntax?
a set of rules for how a language is written
a primitive data type that represents either true or false
boolean
It is an optional statement used to describe what a program or a line of program is doing.
comment
What does == represent?
comparing the equality of two values
which of the following is a function of Integrated Development Environment?
debug, compile, edit program
If J=5 and K=6, what will the output of the following code be? return J==K?
false
Which of the following is syntactically wrong (int a; int 1b; int_a; )
int 1b
Which declaration with throw an error? (String name = "1 1233 141"; double num = 1; int bigNumber = 1234567890; char random = '7';)
int bigNumber = 1234567890;
Tools that provide support for software development process including editors and debuggers are called
integrated development environments
All Java applications must have a method named __________.
main ()
if-else statement
makes a decision based on input
Which of the followings is Java code that starts from the main() method as a mandatory part of every program
public static void main (String args[])
What type of variable would you use to store $250.56
string
How is a variable assigned?
x = 2
