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Questions and Answers
Which of the following is the result of 5 + 3 in Java?
Which of the following is the result of 5 + 3 in Java?
- 53
- 7
- 15
- 8 (Correct) (correct)
Which of the following is a primitive data type in Java?
Which of the following is a primitive data type in Java?
- String
- Double
- int (Correct) (correct)
- Integer
What does the keyword 'static' mean when applied to a method in Java?
What does the keyword 'static' mean when applied to a method in Java?
- The method can be called on an instance of the class.
- The method is part of the class and can be called without creating an instance of the class. (Correct) (correct)
- The method is abstract.
- The method is private.
Which loop in Java is used when you want to execute a block of code at least once, regardless of the condition?
Which loop in Java is used when you want to execute a block of code at least once, regardless of the condition?
What is the purpose of the 'break' statement in a loop?
What is the purpose of the 'break' statement in a loop?
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Study Notes
Java Basics
- The result of
5 + 3
in Java is8
, as it performs simple arithmetic addition.
Primitive Data Types
- Primitive data types in Java include:
int
: for integer values.float
: for floating-point numbers.char
: for single characters.boolean
: for true or false values.
Static Keyword
- The keyword
static
when applied to a method means:- The method belongs to the class itself rather than instances of the class.
- It can be called without creating an instance of the class.
Loops in Java
- The
do-while
loop is used when a block of code needs to execute at least once, regardless of the condition.- The code inside the loop runs before the condition is checked.
Break Statement
- The
break
statement in a loop is used to:- Terminate the loop immediately, exiting to the next statement following the loop.
- Control flow, allowing for early exits based on conditions defined within the loop.
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