现在让我们来看看JDK5中有什么更激动人心的改进和创新，我要介绍的是其中的一个比较实用的特性：静态导入！
直接看一段代码吧，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;
}
//在类中导入静态变量和方法
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提供了导入静态类，方法，和属性的新特性，上手也很容易，至于适用的地方嘛，各位就自己看着办罗！