JDK5新特性之一----靜態導入

現在讓我們來看看JDK5中有什麽更激動人心的改進和創新，我要介紹的是其中的一個比較實用的特性：靜態導入！ 直接看一段代碼吧，很容易就可以了解： package staticEx; public class TranscendentalConstants { public static final double PI = 3.14159; public static final double E = 2.71828; } public class IrrationalConstants { public static final double SQRT_TWO = 1.414; public static final double SQRT_THREE = 1.732; } //在類中導入靜態變量和方法 package staticEx; import static staticEx.IrrationalConstants.SQRT_TWO; import static staticEx.IrrationalConstants.SQRT_THREE; import static staticEx.TranscendentalConstants.PI; public class ConstantsWithStaticImport { public static double sinPiOverFour() { return SQRT_TWO / 2; } public static void main(String[] args) { System.out.println("Pi is approximately " + PI); System.out.println("The sin of Pi/4 is about " + sinPiOverFour()); } } JDK5提供了導入靜態類，方法，和屬性的新特性，上手也很容易，至于適用的地方嘛，各位就自己看著辦羅！