CODEWITHSUNDEEP
java
Vongdarakia
Vongdarakia

Reputation: 479

Is the Math class a standard class of Java?

I know that String, Integer and Double are standard classes of Java, but would Math fall into this category?

You definitely do not have to import it like the Scanner class, which isn't a standard class of Java.

Perhaps I do not understand what a standard class is. Can someone explain this for me?

Upvotes: 0

Views: 4139

Answers (3)

dgl
dgl

Reputation: 71

yes Math class i standard, Math package is imported by default.
java.lang.Math class is part of java.lang class which are imported by default.

Go to this link if you want to learn about everything include in java.lang package http://docs.oracle.com/javase/7/docs/api/java/lang/package-summary.html

Upvotes: -1

fge
fge

Reputation: 121860

would Math fall into this category?

Yes. It is documented as part of the JDK javadoc (since JDK 1.0) so you are guaranteed that it will exist in any JRE you'll ever encounter.

Note that since it resides in java.lang, you do not have to import it explicitly; you could:

import java.lang.Math;

but since all classes in java.lang are automatically imported (that includes String and Integer for instance), you need not do that.

This is a peculiar class in the sense that it cannot be instantiated and it only contains static methods and constants; apart from that you are sure to have it available, and that methods and constants obey the defined contract.

Upvotes: 6

Peter Pei Guo
Peter Pei Guo

Reputation: 7870

It comes with the SDK, if that is what "standard" meant.

It is part of the java.lang package, thus does not require import.

Upvotes: 1

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