Same chapter3 marksDifficulty: Medium
Write a Java method that takes an integer and returns true if it is a palindrome.
User-Defined Methods
3 marksDifficulty: Medium
Distinguish between a formal parameter and an actual parameter, and explain call by value.
Original Khojo Papers practice question — not from a past board paper.
Answer
A formal parameter is the variable named in the method definition; an actual parameter is the value or variable passed when the method is called. In call by value a copy of the actual parameter is given to the method, so changes made inside the method do not affect the original variable.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Java passes all arguments by value, including references to objects.
Related questions
From the same topic and chapter, at a similar level.
Same chapter3 marksDifficulty: Medium
Explain the difference between a pure and an impure method.
User-Defined Methods
Same chapter3 marksDifficulty: Medium
What is method overloading? State the conditions under which two methods are said to be overloaded.
User-Defined Methods
Same chapter3 marksDifficulty: Medium
What is the significance of the keyword static in a method declaration?
User-Defined Methods
Same subject3 marksDifficulty: Medium
Explain the ternary operator in Java and rewrite "if (a > b) max = a; else max = b;" using it.
Operators and Expressions in Java
Same subject3 marksDifficulty: Medium
What is the output of: String s = "Examination"; System.out.println(s.length() + " " + s.substring(0, 4) + " " + s.toUpperCase().charAt(2));
String Handling