packagetest.java

PackageTest AbstractClass AnonymousClass的小运用

package chapter7;
import java.lang.*;
public class PackageTest 
{
	public static double PI = Math.PI;	
	public static double PI2 = java.lang.Math.PI;
	public static void main(String args[])
	{
		System.out.println(Math.PI);
		System.out.println(PI2);
	}
}