How to import a method from a package into another program? I don't know how to import... I write a lil' code:
package Dan; public class Vik { public void disp() { System.out.println("Heyya!"); } }
and then, saved it in a folder named "Dan" and I compiled it. The .class file is generated. Then, I wrote this code below:
import Dan.Vik.disp; class Kab { public static void main(String args[]) { Vik Sam = new Vik(); Sam.disp(); } }
and I saved it outside the folder "Dan" and it says : "cannot find symbol"
I saved the first code in C:\Dan\Vik.java and the second in C:\Kab.java
Importing an Entire Package To import all the types contained in a particular package, use the import statement with the asterisk (*) wildcard character. Now you can refer to any class or interface in the graphics package by its simple name. Circle myCircle = new Circle(); Rectangle myRectangle = new Rectangle();
Package in Java is a mechanism to encapsulate a group of classes, sub packages and interfaces. Packages are used for: Preventing naming conflicts. For example there can be two classes with name Employee in two packages, college.
You don't import methods in Java, only types:
import Dan.Vik; class Kab { public static void main(String args[]) { Vik Sam = new Vik(); Sam.disp(); } }
The exception is so-called "static imports", which let you import class (static
) methods from other types.
In Java you can only import class Names, or static methods/fields.
To import class use
import full.package.name.of.SomeClass;
to import static methods/fields use
import static full.package.name.of.SomeClass.staticMethod; import static full.package.name.of.SomeClass.staticField;
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