Multiple choice java

System.out.format("Pi is approximately %d.", Math.PI); What is the result?

  1. Compilation fails

  2. Pi is approximately 3

  3. Pi is approximately 3.141593

  4. An exception is thrown at runtime
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The %d format specifier expects an integer, but Math.PI is a double (approximately 3.141593). This type mismatch causes an IllegalFormatConversionException at runtime. The code compiles without issues, but throws an exception when executed.

AI explanation

To answer this question, let's analyze the given code:

System.out.format("Pi is approximately %d.", Math.PI);

The System.out.format method is used to format and print a formatted string to the console. In this case, the string being printed is "Pi is approximately %d.".

The %d is a format specifier that is used for printing integers. However, Math.PI is a double value, not an integer.

Therefore, when this code is executed, it will throw a java.util.IllegalFormatConversionException at runtime because the format specifier %d is not compatible with the Math.PI value.

Hence, the correct answer is D) An exception is thrown at runtime.

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