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Core Java - Interview Questions and Answers for 'Java import' - 2 question(s) found - Order By Newest

 Q1. What does import java.util.* means in java ? Core Java2017-06-20 09:16:43

Ans. It means import all the classes and interfaces within java.util package and make them available to use within the current class or interface. This is shorthand wild card annotation for importing all classes within a particular package. This won't import the classes within the sub packages of java.util.

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   Like         Discuss         Correct / Improve     java import   import statement


Related Questions

 Is it a good practice to use Asterick(*) in import statement to load multiple packages with single import statement ?
 What is the problem we could face if we be very liberal with importing classes even if we are not using them ? For example

import java.util.*;
import java.io.*;
 Which java package is loaded by default and hence doesn't require an explicit import statement ?
 Why do we need to specify import statement ? Don't you think Java could have been designed in such a way to automatically import everything that's in the class path ?


 Q2. What is the problem we could face if we be very liberal with importing classes even if we are not using them ? For example

import java.util.*;
import java.io.*;
Core Java2017-06-20 09:19:15

Ans. It makes application little heavy as we are importing classes that aren't required.

It creates class name conflicts as similar name classes might be available across different packages. In case of such conflicts, we will have to specify the package name with the class name at the time of it's usage.

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   Like         Discuss         Correct / Improve     import statement   java import


Related Questions

 Is it a good practice to use Asterick(*) in import statement to load multiple packages with single import statement ?
 What does import java.util.* means in java ?
 Which java package is loaded by default and hence doesn't require an explicit import statement ?
 Why do we need to specify import statement ? Don't you think Java could have been designed in such a way to automatically import everything that's in the class path ?



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