package com.atguigu.test09; import static java.lang.annotation.ElementType.*; import java.lang.annotation.Target; import static java.lang.Math.*; /* * JDK1.5: * (1)枚举 * (2)注解 * (3)静态导入 * ... * * 静态导入:JDK1.5 * 语法格式: * import static 包.类名.静态成员; * import static 包.类名.*; */ public class TestStaticImport { public static void main(String[] args) { /* System.out.println(Math.PI); System.out.println(Math.sqrt(4));*/ System.out.println(PI); System.out.println(sqrt(4)); } } @Target({TYPE,METHOD,FIELD}) @interface MyAnnotation{ }