import

The import statements are directions to the compiler as to where to find a class (or group of classes).

Examples:

Static imports:

import static java.lang.System.*;
    This allows you to leave off the System.  
    when accessing members of the System class.
    You can now do  out.println("Yeah");  
    instead of   System.out.println("Boo");
	
import static java.lang.Math.*;
    This allows you to leave off the Math.
    when calling methods of the Math class.
    You can now do  abs(x) instead of Math.abs(x), etc.

Sample imports:

// tells the compiler where to find the Scanner class
import java.util.Scanner;  


// tells the compiler where to look to find the io classes
import java.io.*;  


// tells the compiler where to look to find the ArrayList class
import java.util.ArrayList;  


// tells the compiler where to find the Color class
import java.awt.Color;


// tells the compiler where to find the gui components and other
// related classes used to write a window style program
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;