Java Programming Concepts Quiz

What will be the output of the code: String a = "lorem"; int b = 8; System.out.println(a + b);?

Which statement accurately describes Java?

What exception is thrown when accessing index 5 on an array with a length of 5?

To which of the following can the modulus operator (%) be applied?

What is the most suitable option to replace the blank in the following code? if (score < 5) { return "Fail"; } else if (______) { return "Pass"; }

Output of String and Integer Concatenation

The code results in the output lorem8. This happens because Java automatically concatenates strings when different data types interact, treating the integer b as a string.

Java Language Characteristics

Java is both an object-oriented programming (OOP) language and a procedural language. This means it supports both object-oriented concepts like encapsulation, inheritance, and polymorphism, as well as procedural programming approaches with sequential instructions.

Array Index Out-of-Bounds Exception

Accessing an array element with an index outside the valid range (0 to length - 1) throws an IndexOutOfBoundsException.
In this case, trying to access index 5 in an array of length 5 will result in an IndexOutOfBoundsException.

Modulus Operator Application

The modulus operator (%) can be applied to both integers and floating-point numbers.
This operator returns the remainder after division.

Completing the `if-else` Condition

The most suitable option to fill the blank is score >= 5. This creates a complete conditional statement: if the score is less than 5, return "Fail"; otherwise, if the score is greater than or equal to 5, return "Pass."

Test your knowledge on key Java programming concepts including string and integer concatenation, array exceptions, and the modulus operator. This quiz will challenge your understanding of both object-oriented and procedural programming approaches in Java.