[Solved] What does the import statement import java.io.*; do in a Java program? — Ans: Imports all classes from the java.io package | Java

Java - Packages and Access Control

What does the import statement import java.io.*; do in a Java program?

AImports all classes from the java.io package

BImports only the InputStream class

CImports all packages inside java.io

DImports all classes and sub-packages recursively

Step-by-Step Solution

Solution:

Step 1: Understand wildcard import
The asterisk (*) imports all classes directly inside the specified package.
Step 2: Clarify package vs sub-package imports
It does not import sub-packages or recursively import classes; only classes in java.io are imported.
Final Answer:
Imports all classes from the java.io package -> Option A
Quick Check:
Wildcard import imports all classes in package = C [OK]

Quick Trick: Wildcard (*) imports all classes in one package only, not sub-packages [OK]

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