Multiple choice

Wrapper classes are found in

  1. java.security package

  2. java.util package

  3. java.io package

  4. java.lang package
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Wrapper classes like Integer, Double, Float, Character, and Boolean are part of the java.lang package, which is automatically imported in every Java program. These classes wrap primitive data types to allow them to be used as objects. The java.security, java.util, and java.io packages serve different purposes - security utilities, collections framework, and I/O operations respectively.

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