Why don't we import java.lang package?

Question

In java we import packages to the classes.when we accessing some thing from a different package we have to import that package to our working package.like,

java util.*;
java io.*;

But we never import java lang package.Why is that?what is the specialty in java lang package.

It is auto imported https://stackoverflow.com/questions/2073680/why-autoimport-only-java-lang-package — Thiyagu, Jul 10 '18 at 04:25
@ThilanRavindu your question is entirely reasonable: it is non-obvious why it should be so. It has just been asked many times before. — Andy Turner, Jul 10 '18 at 05:46

score 7 · Accepted Answer · answered Jul 10 '18 at 04:36

7

Because:

Code in a compilation unit ... automatically imports all of the public types declared in the predefined package java.lang.

Source: Java Language Specification #7

answered Jul 10 '18 at 04:36

user207421

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Translation: "just because". Hmmm .... – Rick Jul 10 '18 at 05:02
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@Rick Translation: because that's the way they designed it, and here is the JLS citation to prove it. What else were you expecting exactly? – user207421 Oct 12 '19 at 10:34

score -1 · Answer 2 · answered Jul 10 '18 at 04:29

-1

Java.lang package is imported by default. If you check the documentation, then you'd see you use mostly half of it blindly.

Documentation: https://www.cs.mun.ca/java-api-1.5/api/java/lang/package-summary.html

Source: http://www.cafeaulait.org/course/week4/31.html

answered Jul 10 '18 at 04:29

Mert Karakas

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Elliotte Rusty Harold's text is not a normative reference. – user207421 Jul 10 '18 at 04:38

Why don't we import java.lang package?

2 Answers2