How are packages declared?

How are packages declared?

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Packages are declared by using the package statement. The word package is a keyword in Java. The package statement is not technically needed to write a complete Java program. However, if it appears, it must be the first executable statement in the program. Only comments or white spaces are allowed before a package statement. There can be only one package declaration in a program. If no package declaration appears, the class will belong to the default package.

For example, the following source code file defines a class named ClassOne in the package named pack1:

package pack1;

public class ClassOne{
{
// body of class
}

This source file will be saved with the name ClassOne.java in the directory named pack1.

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