What is the import statement?

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What is the import statement?

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The import statement is a compilation unit that is used to bring a specified class, or an entire package, into the visibility of a source file. The import statement is an optional part of a source file. If the import statements appear in a source file, they must be placed before any class declaration.

To import a single class, its fully qualified name is used after the import keyword. However, to import the entire package, the wildcard character * (asterisk) is used after the end of the package name. This is shown as given below:

import java.util.*;
import java.util.Vector;

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