💻Step 12:Packages – 7th hour + code

💡Definition

– Group of similar types of classes, interfaces and subpackages.

💡Categories-

💡1- Built in packages

– also called as predefined packages in java
 i.e- java.lang, java.util, java.io etc

💡2- User defined packages

-also called as developer/user defined packages

[To use class of other package, we have 3 options to choose]

💡a- using fully qualified name
qlfdname
💡b- by importing package.class (recommended)
pck-clas

💡C- by importing full package*
pck-ful

Note– importing package doesn’t include subpackage

💡Static Import

used to import only static member of a class instead of class.
pck-sttc

 

Interview Questions —

  • How packages are related to access modifiers?
  • How many ways are available to import class of other packages?

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