java - Are Imports and Libraries the same? -

so kind of confused, righting dissertation software made , wondering while explaining code if imports used in each class "import java.io.ioexception;" in same moment libraries? or libraries else?

a java library jar file containing classes , other resources. available, @ compile time , @ runtime, library (the jar file) must present in classpath.

imports have nothing libraries. imports used allow source code use short class names instead of qualified names. example, being able code

list<string> list = new arraylist<string>(); 

instead of

java.util.list<string> list = new java.util.arraylist<string>(); 

whether use import or use qualified name, java compiler or java runtime must able find class in classpath. if class part of library, library must in classpath.